The object with more volume is the inflated balloon
Explanation:
Volume is about how much space an object or material occupies; in this context, if the inflated balloon has the double size of the bag of marbles then the balloon has more volume because this is occupying more space.
Moreover, the volume should not be confused with other factors such as mass or weight because it is likely the marbles weight more but this does not imply the marbles have more volume. Also, the balloon contains gas and gases tend to expand and occupy more space, which does not occur with solids such as marbles because these have a defined volume.
17. HAZWOPER training and certification recognizes:
a. A large number (as much as 80%) will self-present or be self-referred victims
b. Awareness level training will promote proper initial triage actions
c.
Victims will use any entrance they can enter at the hospital, in addition to the
emergency department entrance
d. Both A and C
HAZWOPER training and certification recognize:
a large number (as much as 80%) will self-present or be self-referred victimsVictims will use any entrance they can enter at the hospital, in addition to the emergency department entranceThe correct option is both A and C
What is the HAZWOPER training and certification?HAZWOPER (Hazardous Waste Operations and Emergency Response) training and certification recognize that a large number of victims (as much as 80%) in hazardous waste incidents or emergencies will self-present or be self-referred for medical treatment.
Additionally, HAZWOPER training acknowledges that victims may use any entrance they can access at a hospital, not just the emergency department entrance.
This is because individuals affected by hazardous materials may arrive at different areas of the hospital seeking medical assistance.
Therefore, option d. Both A and C are correct statements regarding the recognition of HAZWOPER training and certification.
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True or False: The exact location of an electron can be measured thanks to
modern science.
Answer:
false you can not get a exact location of electrons from just modern science
Please help thank you
Answer:
be pulled into the new star
Explanation:
Because it is heavier, with more mass and more gravitational force than our little Sun.
Two asteroids are 75,000 m apart one has a mass of 8 x 10^7 N what is the mass of the other asteroid
The mass of the asteroid is C. 1.2 x \(10^{12}\) Kg
To find the mass of the other asteroid, we can rearrange the equation for the gravitational force between two objects:
F = (G * m1 * m2) / \(r^{2}\)
where F is the force of gravity, G is the gravitational constant, m1 and m2 are the masses of the two asteroids, and r is the distance between them.
Given that the distance between the asteroids is 75000 m, the force of gravity between them is 1.14 N, and one asteroid has a mass of 8 x \(10^{7}\) kg, we can substitute these values into the equation and solve for the mass of the other asteroid (m2):
1.14 N = (6.67430 × \(10^{-11}\) N \(m^{2}\)/\(Kg^{2}\) * 8 x \(10^{7}\) kg * \(m2\)) / \((75000 m)^{2}\)
Simplifying and solving the equation, we find that the mass of the other asteroid (m2) is approximately 1.2 x \(10^{12}\) kg. Therefore, Option C is correct.
The question was incomplete. find the full content below:
Two asteroids are 75000 m apart one has a mass of 8 x \(10^{7}\) kg if the force of gravity between them is 1.14 what is the mass of the asteroid
A. 3.4 x \(10^{11}\) kg
B. 8.3 x \(10^{12}\) kg
C. 1.2 x \(10^{12}\) kg
D. 1.2 x \(10^{10}\) kg
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Problem #1: What is the percent by mass concentration of a solution that contains 5.30g of salt dissolved in 19.7g of water?
Answer:
21.2%
Explanation:
the equation for this question is
(mass solute/mass solution)*100
mass solute=5.3
mass solution=5.3+19.7
(5.3/25)*100=21.2%
How many atoms are there in a sample of lead with a mass of 6.8 g?
a. 0.0328 atoms of lead
b. 1.83 atoms of lead
c. 1.98 x 1022 atoms of lead
d. 6.02 x 1023 atoms of lead
Answer:
B
Explanation:
How many grams of AuCl3 contain 5.0 x 1023 molecules?
Answer:
approximately 251.55 grams of AuCl3 would contain 5.0 x 10^23 molecules.
Which of the following elements belong to the s-block of the periodic table?
The 14 elements that make up the S-block are hydrogen (H), lithium (Li), helium (He), sodium (Na), beryllium (Be), potassium (K), magnesium (Mg), rubidium (Rb), calcium (Ca), cesium (Cs), strontium (Sr), francium (Fr), barium (Ba), and radium (Ra).
S-block, what is it?The Periodic Table's s-block elements are those in which the final electron enters the most outer s-orbital. Only two groups (1 & 2) are found in the s-block of the Periodic Table because the s-orbital can only hold two electrons.
What is the s-block formula?S block elements' common outer electrical configuration is ns(1-2).
Given that it contains sodium, beryllium, magnesium, and lithium, I am rather certain that it contains alkaline metals.
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Question 1
How many grams are equal to 3.4 moles of carbon dioxide?
Answer:
149.6 grams
Explanation:
Mass in gram = molar mass * number of moles
Massof CO2 in gram = 44*3.4=149.6 grams
please help me
four facts..please
A 45 mL sample of calcium chloride stock solution produces a 0.182 M diluted solution by adding 50. mL of water. What is the molarity of the stock solution?
A solution of Calcium Chloride was made, we are asked to find the concentration of the initial solution.
We will apply the following equation to find it:
\(C_1V_1=C_2V_2\)Where,
C1 is the initial concentration we have to find
V1 is the initial volume, 45mL
C2 is the final concentration, 0.182M
V2 is the final volume, 50. mL
We clear C1 and replace the known data;
\(C_1=\frac{C_2V_2}{V_1}\)\(\begin{gathered} C_1=\frac{0.182M\times50.mL}{45mL} \\ C_1=0.202M \end{gathered}\)The molarity of the stock solution is 0.202M
Answer: 0.202M
Please help me with this question!
Calculate the number of moles of each substance.
a. 6.00 g oxygen, O₂
b. 450.0 g of iron(III) oxide, Fe₂O₂
c. 45.5 g of calcium chloride, CaCl2
Thanks to anyone who answers!
A. The mole of 6.00 g oxygen, O₂ is 0.188 mole
B. The mole of 450.0 g of iron(III) oxide, Fe₂O₃ is 2.92 moles
C. The mole of 45.5 g of calcium chloride, CaCl₂ is 0.41 mole
A. How do i determine the mole?The mole present in 6.00 g oxygen, O₂ can be obtained as follow:
Mass of oxygen, O₂ = 6 grams Molar mass of oxygen, O₂ = 32 g/mol Mole of oxygen, O₂ =?Mole = mass / molar mass
Mole of oxygen, O₂ = 6 / 32
Mole of oxygen, O₂ = 0.188 mole
B. How do i determine the mole?The mole present in 450.0 g of iron(III) oxide, Fe₂O₃ can be obtained as follow:
Mass of Fe₂O₃ = 450 grams Molar mass of Fe₂O₃ = 159.69 g/mol Mole of Fe₂O₃ =?Mole = mass / molar mass
Mole of Fe₂O₃ = 450/ 159.69
Mole of Fe₂O₃ = 2.92 moles
B. How do i determine the mole?The mole present in 45.5 g of calcium chloride, CaCl₂ can be obtained as follow:
Mass of CaCl₂ = 45.5 grams Molar mass of CaCl₂ = 111 g/mol Mole of CaCl₂ =?Mole = mass / molar mass
Mole of CaCl₂ = 45.5/ 111
Mole of CaCl₂ = 0.41 mole
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A solution of dextrose contains 25.0 g solute in 250.0 g water. How should the percentage by mass of dextrose in this solution be calculated?
Answer:
9.10% dextrose
Explanation:
To find the mass percent, you need to use the following equation:
mass (g) of solute
Mass Percent = --------------------------------- x 100%
mass (g) of solution
You can plug the given values into the equation and solve to find the mass percent of dextrose. But first, you need to calculate the mass of the solution.
Mass (solute): 25.0 g
Mass (solution): 250.0 g + 25.0 g = 275 g
25.0 grams
Mass Percent = ------------------------ x 100%
275 grams
Mass Percent = 0.0909 x 100%
Mass Percent = 9.10%
A solution of dextrose contains 25.0 g solute in 250.0 g water. 9.10% is the percentage by mass of dextrose in this solution.
A component's concentration in a combination or compound can be expressed as a mass percent, also known as a weight percent. It shows how much of the total mass of the solution or mixture is made up of the solute's (component's) mass. In chemistry, mass percent is frequently employed and stated as a percentage.
Mass Percent = mass (g) of solute/ mass (g) of solution x 100%
Mass (solute): 25.0 g
Mass (solution): 250.0 g + 25.0 g = 275 g
Mass Percent =25.0 grams / 275 grams x 100%
Mass Percent = 0.0909 x 100%
Mass Percent = 9.10%
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Balancing equations, Lawd help me
Every chemical has an equal amount of atoms on both the product and reactant sides, and the equation is considered to be balanced without any inequalities. Hence, C3H8 + 5O2 3CO2 + 4H2O is the balanced chemical equation.
How is an equation balanced?In order to make a stoichiometry equal in both the reactants and the products, add equations whenever necessary prior to the symbols or formulations.
What is the balancing rule?In science, if an element is still, we state it is balanced. An thing is in a thermodynamic equilibrium when it's fully balanced. Any forces acting on the item are counterbalanced by forces moving the other way. The average location of the gravitational pull on an item is known as the centre of gravity.
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A bond formed between Iron and Chlorine would
result in what type of bond?
Answer:
Ionic bond
Explanation:
This type of chemical bond is called an ionic bond because the bond formed between two ions of opposite charge. The sodium cation (Na+) and the chlorine anion (Cl-) are attracted to one another to form sodium chloride, or table salt.
In any ecosystem, the survival of a species depends on the resources that are available. Beneath the tree canopy in a tropical rainforest, growth of some plant species may be limited. The availability of which of these resources most likely limits the growth of plants on the ground level in this ecosystem?
Group of answer choices
minerals
carbon dioxide
water
sunlight
Sunlight is the resource that most likely limits the growth of plants on the ground level in a tropical rainforest ecosystem. In the tropical rainforest, the dense tree canopy often limits the amount of sunlight that reaches the ground level. This limited sunlight can make it difficult for plants to photosynthesize and produce energy, which can in turn limit their growth and survival. While water and minerals are also essential for plant growth, they are typically more abundant in the tropical rainforest than sunlight. Carbon dioxide is also important for photosynthesis, but it is typically not a limiting factor for plant growth in a tropical rainforest ecosystem. Therefore, the availability of sunlight is the most likely resource that limits plant growth on the ground level in a tropical rainforest ecosystem.
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diffrentiate between equation and chemical formula
A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side with a plus sign between the entities in both the reactants and the products and an arrow that points towards the products, and shows the direction of the reaction. The coefficients next to the symbols and formulae of entities are the absolute values of the stoichiometric numbers. The first chemical equation was diagrammed by Jeen Beguin in 1615.
A chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus and minus signs.
Hope this helps you!
Answer:
Explanation:
Chemical Formula:Represents the composition of a substance or compoundUses symbols and subscripts to indicate the types and numbers of atoms in a moleculeExample: H2O represents the chemical formula for waterChemical Equation:Represents a chemical reactionShows the reactants and products involved in the reactionUses chemical formulas and symbolsReactants are on the left side, products on the right side, separated by an arrowExample: 2H2 + O2 → 2H2O represents the reaction of hydrogen gas and oxygen gas to form waterIn summary:Formula describes composition, equation describes a reactionFormula uses subscripts for atom count, equation uses symbols and arrowsAt 18 degrees Celsius 34.7 g of carbon dioxide gas creates of 623 mmHg what volume is the gas produced?
The volume of gas produced at 18 degrees Celsius 34.7 g of carbon dioxide gas creates of 623 mmHg is 0.03 L
The ideal gas equation is as follows;
PV=nRT
P,V,n,R,T are pressure, volume, number of moles, gas constant and temperature respectively
Substituting the values, we get
623xV=34.7/44x0.0821X291
623V=0.78X23.8911
623V=18.635
V=0.03 L
An ideal gas follows the ideal gas equation.It is also called the equation of state.It is also called the general gas equation.It is derived from the kinetic microscopic theory.It is a generalization form of Charles's law and Boyle's law.This law can be derived from the kinetic theory of gases and relies on the assumptions that (1) the gas consists of a large number of molecules, which are in random motion and obey Newton’s laws of motion.To learn more about ideal gas visit:
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Find the number of moles in 25.0g of ammonium
Answer:
1.389 moles
Explanation:
We are given that
Given mass of ammonium=25.0 g
We have to find the number of moles in 25.0g of ammonium.
The chemical formula of ammonium \(NH^{+}_4\)
Molar mass of N=14, Molar mass of H=1
Molar mass of ammonium (NH4+)=14+4(4)=18 g/mol
We know that
Number of moles=Given mass/Molar mass
Using the formula
Number of moles of ammonium=\(\frac{25}{18}\)moles
Number of moles of ammonium=1.389 moles
Hence, the number of moles in 25.0g of ammonium=1.389 moles
When multiplying and dividing, you should always round your answer according to which of the following
rules?A. Round answer to the least number of total digits found in the problem.
B. Round answer to 3 sig figs as a standard rule.
C. Round answer to the least number of decimal places found in the problem
D. Round answer to the least number of sig figs found in the problem
Answer:
B
Explanation:
Unless the question asks for a different amount of digits (sig figs) then round to 3 sig figs, for example, instead of 34.3492012 it would be 34.4, because the 9 would round the 4 up to a 5 and the 5 would round up the 3 to a 4
In a laboratory experiment a student found the pH of rain rain water sample to be 4.35 calculate H3O+ in the rainwater
The rainwater sample has a pH of 4.35, indicating that it is acidic. The concentration of \(H_3O^+\) ions in the sample is \(4.47 * 10^{-5} M\), which is higher than in neutral or basic solutions.
In a laboratory experiment, a student found the pH of a rainwater sample to be 4.35. In this context, the task is to calculate the concentration of hydronium ions (\(H_3O^+\)) in the given rainwater sample. The pH of the rainwater sample is an indication of how acidic it is. As per the pH scale, acidic solutions have a pH of less than 7. Since the pH of rainwater is acidic (pH = 4.35), it means that the concentration of \(H_3O^+\) ions is higher in the rainwater sample. To calculate the concentration of \(H_3O^+\) ions, we can use the following formula: pH = -log[\(H_3O^+\)], Where[\(H_3O^+\)] is the concentration of hydronium ions. By rearranging the above formula, we can get the concentration of \(H_3O^+\) ions as \([H_3O^+] = 10^{-pH}\). Substituting the given pH value of the rainwater sample in the above equation, we get\([H_3O^+] = 10^{-4.35} = 4.47 × 10^{-5} M.\)Therefore, the concentration of \(H_3O^+\) ions in the given rainwater sample is \(4.47 * 10^{-5} M.\)For more questions on acidic
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(3.1 x 10^3) (1.00 x 10^7) =
Answer:
(3.1 x 10^3) (1.00 x 10^7) = 31000000000
What happens to valence electrons when a covalent bond forms?
Explanation:
Covalent bonding occurs when pairs of electrons are shared by atoms. Atoms will covalently bond with other atoms in order to gain more stability, which is gained by forming a full electron shell. By sharing their outer most (valence) electrons, atoms can fill up their outer electron shell and gain stability
Which of the following is a way that animals can help the environment? (2 points)
a
Overpopulating
b
Producing oxygen
c
Spreading disease
d
Spreading seeds
A serving of a particular fruit dessert contains 15.0 g of sugar. If all the sugar is sucrose, C12H22O11 (molar mass = 342), how many molecules of sugar are present in this serving?
There are 2.64 × 1022 molecules of sucrose present in this serving of fruit dessert containing 15.0 g of sugar.
To determine the number of molecules of sugar present in the serving, we need to calculate the number of moles of sugar and then convert it to the number of molecules.
Given:
Mass of sugar (sucrose) = 15.0 g
Molar mass of sucrose (C12H22O11) = 342 g/mol
First, calculate the number of moles of sugar using the formula:
Number of moles = Mass of substance / Molar mass
Number of moles of sugar = 15.0 g / 342 g/mol ≈ 0.0439 mol
Next, we use Avogadro's number, which states that there are approximately 6.022 × 10^23 molecules in one mole of a substance. Therefore, to find the number of molecules of sugar:
Number of molecules = Number of moles × Avogadro's number
Number of molecules of sugar = 0.0439 mol × 6.022 × 10^23 molecules/mol ≈ 2.64 × 10^22 molecules
Therefore, there are approximately 2.64 × 10^22 molecules of sugar present in this serving.
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What is the pressure, in atmospheres, exerted by a 0.100 mol sample of oxygen in a 2.00 L container at 273 °C? A) 4.48 x 10¹¹ atm B) 2.24 x 10⁰ atm C) 1.12 x 10³ atm D) 2.24 x 10³ atm
The pressure, in atmospheres, exerted by a 0.100 mol sample of oxygen in a 2.00 L container at 273 °C is 2.24 × 10⁰ atm.
How to calculate pressure?The pressure of a substance can be calculated using the following formula;
PV = nRT
P = pressureV = volumen = no of molesR = gas law constantT = temperatureAccording to this question, the pressure, in atmospheres, exerted by a 0.100 mol sample of oxygen in a 2.00 L container at 273 °C can be calculated as follows:
P × 2 = 0.1 × 0.0821 × 546
2P = 4.48266
P = 2.24 × 10⁰ atm
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A gas sample originally occupies 436 mL at 24 C. When the volume is expanded to 612 mL and the temperature is increased to 97 C, the pressure becomes 526 mm Hg. What was the original pressure?
Initially, there was a 266.8 mm Hg pressure.
solve this problem, we can use the combined gas law, which relates the pressure, volume, and temperature of a gas sample. The formula is:
(P1 × V1) ÷ (T1) = (P2 × V2) ÷ (T2)
where P1 and P2 are the initial and final pressures, V1 and V2 are the initial and final volumes, and T1 and T2 are the initial and final temperatures.
We are given that:
- V1 = 436 mL
- V2 = 612 mL
- T1 = 24 C + 273.15 = 297.15 K (convert from Celsius to Kelvin)
- T2 = 97 C + 273.15 = 370.15 K
- P2 = 526 mm Hg
We want to find P1, the original pressure.
Plugging in the values, we get:
(P1 × 436 mL) ÷ (297.15 K) = (526 mm Hg × 612 mL) ÷ (370.15 K)
Solving for P1, we get:
P1 = (526 mm Hg × 612 mL × 297.15 K) ÷ (436 mL × 370.15 K) = 266.8 mm Hg
Therefore, the original pressure was 266.8 mm Hg.
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QUESTION #1:
A fertilizer is a type of chemical that is added to plants to make the plants grow faster. A commercial for Super-Gro, a new type of fertilizer, claims that Super-Gro “makes plants grow faster than ever!”. As a scientist, you would like to test this claim to see if it is true..
Your task: Design an experiment that might be conducted to show whether SuperGro works to speed up plant growth. Describe this experiment below, using as much detail and science vocabulary as possible.
Need to use.. We need a control setup BECAUSE…
We need a large sample size BECAUSE…
We need to keep these factors constant BECAUSE…
We need to quantify our data BECAUSE…
The limitations of the experiment are…because…
Answers?
To test the claim that Super-Gro "makes plants grow faster than ever," we can design an experiment that compares the growth of plants fertilized with Super-Gro to the growth of plants that are not fertilized.
We need a control setup because it allows us to compare the growth of the plants treated with Super-Gro to the growth of plants that are not treated with any fertilizer, in order to see if there is a significant difference in growth.
We need a large sample size because it increases the statistical power of the experiment and makes the results more reliable. A sample size of at least 30 plants per group is recommended.
We need to keep these factors constant because any variation in factors such as temperature, light, and water can affect plant growth. We need to control these variables in order to ensure that any differences in growth between the control and experimental groups are due to the fertilizer and not other factors.
We need to quantify our data in order to be able to compare the growth of the plants treated with Super-Gro to the growth of the control plants. We can quantify the data by measuring the height and width of the plants at regular intervals, such as every day or every week, and then calculating the average growth rate for each group.
The limitations of the experiment are that it may not take into account the different growing conditions of different types of plants, and it may not take into account any long-term effects of the fertilizer on plant growth.
What is the fertilizer about?A fertilizer is a substance that is added to soil or plants to provide essential nutrients for growth. Fertilizers can be organic or inorganic, and they can contain a variety of different nutrients, including nitrogen, phosphorus, and potassium.
These three elements are known as macronutrients and are required in large amounts by plants. Some fertilizers also contain micronutrients, such as iron, zinc, and copper, which are needed in smaller amounts.
Therefore, Super-Gro is a brand of fertilizer that claims to make plants grow faster than ever. It is likely that the fertilizer contains a combination of macronutrients and possibly micronutrients to aid in plant growth.
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Container A holds 767 mL of an ideal gas at 2.80 atm. Container B holds 154 mL of a different ideal gas at 4.50 atm.
Container A and container B are glass spheres connnected by a tube with a stopcock. Container A is larger than container B.
If the gases are allowed to mix together, what is the resulting pressure?
Answer:
Explanation:
Initial:
Suppose a student repeats Experiment 1 using strontium instead of magnesium. The student adds 4.93 g of strontium to a crucible, heats the crucible and its contents for several minutes over a Bunsen burner, and records the final mass of the crucible and its contents.
Write the balanced chemical equation for this reaction. Include physical states.
balanced equation:
What mass of product is expected to form in this reaction? Assume all of the strontium reacts.
mass of product:
The balanced chemical equation for the reaction between strontium and oxygen can be written as follows: 2 Sr (s) + \(O_2\)(g) → 2 SrO (s).
In this equation, solid strontium (Sr) reacts with gaseous oxygen (\(O_2\)) to produce solid strontium oxide (SrO).
To determine the mass of product expected to form in this reaction, we need to consider the molar ratio between strontium and strontium oxide. From the balanced equation, we can see that 2 moles of strontium react to produce 2 moles of strontium oxide.
The molar mass of strontium (Sr) is 87.62 g/mol, and the molar mass of strontium oxide (SrO) is 119.62 g/mol. Since the molar ratio is 1:1 between strontium and strontium oxide, the mass of strontium oxide formed will be equal to the mass of strontium used.
In this case, the student added 4.93 g of strontium to the crucible. Therefore, the expected mass of strontium oxide formed will also be 4.93 g.
It's important to note that this calculation assumes that the reaction proceeds to completion, meaning that all of the strontium reacts with oxygen. In actual laboratory conditions, the yield of the reaction may be less than 100% due to factors such as incomplete reaction, side reactions, or product loss.
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