what is the mass of 0.75 mol of hydrogen sulfide
Answers
Answer:
25.56066
Explanation:
hope this helps !!!!!!! and sorry if it doesn't help
Related Questions
apples cost $1.75 per pound
What conversion factor could be used to determine how many pounds of apples could be bought for $10.00 ?
Answers
Answer: my opinion is about 5 pounds of apples that you can get with $10
Explanation:
srry if im wrong
A breakbulk warehouse: Group of answer choices Receives large-volume truckload shipment and breaks them down into smaller quantities Aims to reduce the total miles shipped Slows the speed of deliveries down Improves supply chain visibility All of the above
Answers
A breakbulk warehouse performs the following functions: receiving large-volume truckload shipments and breaking them down into smaller quantities, aiming to reduce the total miles shipped, slowing the speed of deliveries down, and improving supply chain visibility.the correct answer is "All of the above."
A breakbulk warehouse serves as an intermediary point in the supply chain where large-volume truckload shipments are received and subsequently broken down into smaller quantities. This process allows for more flexibility and customization in the distribution of goods to various destinations.
One of the objectives of a breakbulk warehouse is to reduce the total miles shipped. By consolidating shipments and breaking them down into smaller quantities closer to the end destinations, the warehouse can minimize the overall transportation distance. This optimization contributes to cost savings and environmental benefits.
Lastly, a breakbulk warehouse can enhance supply chain visibility. By consolidating shipments and controlling the flow of goods, the warehouse provides better visibility and tracking capabilities. This visibility enables improved inventory management, real-time tracking, and enhanced coordination among stakeholders in the supply chain.
Therefore, the correct answer is "All of the above."
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The mass of an object is 240g and its volume is 60 cm3
will it sink or float
Answers
Answer:
Float
Explanation:
Becuase 240 g had more volume then the 60 cm3 which is lighter that the mass of 240 grams
4. A piece of limestone (CaCO3) with an initial mass of 3.24 g is placed in 100 mL of a HCl solution. The
calcium carbonate reacts with the hydrochloric acid solution to yield calcium chloride, carbon dioxide, and
water. Once this reaction goes to completion there is still 2.24 g of excess limestone left in the solution.
Write a balanced equation to represent this reaction and find the molarity of the hydrochloric acid
Answers
Explanation:
The balanced chemical equation for the reaction between calcium carbonate (CaCO3) and hydrochloric acid (HCl) is:
CaCO3 + 2 HCl → CaCl2 + CO2 + H2O
According to the problem, 3.24 g of calcium carbonate reacted with excess hydrochloric acid, leaving 2.24 g of excess limestone in the solution. This means that 3.24 - 2.24 = 1 g of calcium carbonate reacted with the hydrochloric acid. We can use this information to calculate the number of moles of calcium carbonate that reacted:
1 g CaCO3 / 100.09 g/mol CaCO3 = 0.00999 mol CaCO3
Since the balanced chemical equation shows that 1 mole of calcium carbonate reacts with 2 moles of hydrochloric acid, we know that 0.01998 moles of hydrochloric acid reacted. We can use this information to calculate the molarity of the hydrochloric acid solution:
Molarity = moles of HCl / volume of solution
Molarity = 0.01998 mol / 0.1 L
Molarity = 0.1998 M
Therefore, the molarity of the hydrochloric acid solution is 0.1998 M.
Alcohols are a key intermediate in organic synthesis since they can oxidized to carbonyl containing functional groups. In this tutorial, we will cover: 1. what happens in an oxidation reaction 2. oxidation of secondary alcohols to ketones 3. oxidation of primary alcohols to aldehydes or carboxylic acids 4. oxidation reagents and how we can control oxidation The previous example showed the simplest alcohol and the oxidation products expected. Note that the oxidation of an alcohol to a higher oxidation state involves loss of hydrogens. This means that tertiary alcohols cannot be oxidized, since it does not have a hydrogen that can be lost. Longer primary and secondary alcohols can also be oxidized. Which of the reactions shown Constitute an oxidation reaction? CH, CHO CH,CH,OH CH,CO,CH CH,CH, OH CH, COH CH CHO - CH.CH OH > OH
Answers
The reactions that constitute oxidation reaction are, CH3CH2OH --> CH3CHO, CH3CHO --> CH3COOH, CH3CH2CH2OH --> CH3COCH3.
An oxidation reaction is a chemical reaction in which an atom or molecule loses one or more electrons. In the case of alcohols, oxidation typically involves the loss of hydrogen atoms and the addition of oxygen atoms to form a carbonyl-containing functional group.
The reactions that constitute an oxidation reaction are the ones that involve the loss of hydrogen atoms and the addition of oxygen atoms. In the examples given, the following reactions are oxidation reactions:
1) CH3CH2OH --> CH3CHO (oxidation of a primary alcohol to an aldehyde)
2) CH3CHO --> CH3COOH (oxidation of an aldehyde to a carboxylic acid)
3) CH3CH2CH2OH --> CH3COCH3 (oxidation of a secondary alcohol to a ketone)
The other reactions shown do not involve the loss of hydrogen atoms or the addition of oxygen atoms, and therefore do not constitute oxidation reactions.
Oxidation reagents are chemical compounds that are used to carry out oxidation reactions. Some common oxidation reagents include chromic acid (H2CrO4), potassium permanganate (KMnO4), and sodium hypochlorite (NaClO).
The choice of oxidation reagent and the reaction conditions can be used to control the level of oxidation and the products formed.
For example, using a milder oxidation reagent or lower reaction temperatures can help prevent over-oxidation of the alcohol to a carboxylic acid.
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The gravitational pull between two objects depends on their mass and distance. What is meant by distance?
Answers
Answer:
How far away the objects are from each other
How can you find the number of protons from the nuclide symbol?
It is the difference in the mass number and atomic number.
It is half the number in the upper left (half the mass number).
It is the number in the lower left (atomic number).
It is the number in the upper left (atomic number).
It is the number in the upper left (mass number).
Answers
Answer: It is the number in the upper left (atomic number).
Explanation: The atomic number is normally the number of protons. I hope this helps.
________ is produced in the stomach and stimulates food intake.
Select one:
a. Peptide PYY
b. Cholecystokinin
c. Gastrin
d. Ghrelin
e. No answer is correct
Answers
Answer:
Ghrelin
Explanation:
Ghrelin is produced in the stomach and stimulates food intake. The correct option is d.
Ghrelin is a hormone produced in the stomach that stimulates food intake. It is often referred to as the "hunger hormone" because it plays a crucial role in regulating appetite. When the stomach is empty, ghrelin levels increase, signaling the brain to initiate feelings of hunger and promote eating. Once the stomach is full, ghrelin levels decrease, reducing the desire to eat and contributing to feelings of satiety.
The other options, Peptide PYY, Cholecystokinin, and Gastrin, are not primarily responsible for stimulating food intake. Peptide PYY is an appetite-suppressing hormone released by the intestines in response to food consumption, helping to induce feelings of fullness. Cholecystokinin, another hormone secreted by the small intestine, plays a role in digestion and also contributes to satiety. Gastrin, produced in the stomach, is primarily involved in stimulating the secretion of gastric acid, which aids in the breakdown of food during digestion.
In summary, ghrelin is the hormone produced in the stomach that stimulates food intake, making option d the correct answer.
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in the symbol 3p4
a. the 3 represents the principal energy level
b. the p represents the principal energy level
c. the 4 represents the principal energy level
d. all of the above
help!
Answers
Answer:
a. the 3 represents the principal energy level
Explanation:
3 is the principal energy level. The p is the sublevel. 4 is the possible occupying electron.
what volume of hydrogen is produced, at 567 torr and 24.3c when 4.50 grams of magnesium reacts with excess hydrochloric acid
Answers
According to equation 1, magnesium reacts with hydrochloric acid to create hydrogen gas. When the acid and magnesium react, hydrogen gas is produced. This gas is captured by water displacement, and its volume is measured.
The chemical equation below describes how magnesium metal (Mg) and hydrochloric acid (HCl) react to generate magnesium chloride (MgCl2) and hydrogen gas (H2). Mg (s) + 2 HCl (aq) MgCl2 (aq) + H2 (g)
What is Hydrochloric acid ?An aqueous solution of hydrogen chloride is what is known as hydrochloric acid, commonly referred to as muriatic acid. It has an unmistakably strong odor and is colorless. It is categorized as a powerful acid. In the digestive tracts of the majority of animal species, including humans, it is a part of the stomach acid.
Since HCl typically has a pH of 3, it is considered a strong acid. Because it entirely dissociates into H+ and Cl- ions in an aqueous solution, it is a strong acid.
When hydrogen chloride is present in the air in large proportions, breathing can be dangerously difficult and even deadly. Chemical burns from hydrochloric acid can be extremely painful if they come into contact with skin or other tissues.
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What is the molarity of a 50.0ml aqueous solution containing 10.0 grams of hydrogen peroxide H2O2
Answers
Molarity= No of moles of solute * 1000 / vol solution in ml
No of moles= Given mass / Molar mass
Given Mass of solute (H2O2)= 10g
Molar mass of H2O2=34gmol^-1
No of moles= 10/34= 0.294 moles
Volume of solution=50ml
Molarity = 0.294*1000 / 50
Molarity = 5.8M
Please help me!!! I have like ten minutes left to submit my homework in
A student knows that the sublimation point of carbon dioxide (CO ) is -78.5°C. That is, at this temperature, solid carbon dioxide will change state directly from a solid to a gas. The student is asked to predict the temperature at which gaseous carbon dioxide will change directly from a gas to a solid. Which prediction will be supported by experimental evidence?
Answers
Answer:
See explanation
Explanation:
Even though the options were not stated in the question, it is clear that the prediction required must reflect the stated fact that the sublimation temperature of CO2 is -78.5°C. This is the fact that was observed in the cause of the experiment. Hence any of the options that reflects this statement must be the correct option among the list of options available in the question.
3. A balloon is filled with 652 ml of helium at a pressure of 1.00 atm. What is the new volume, in milliliters, if the pressure decreases to 0.971 atm, with T and n constant
Answers
The new volume of the balloon is 671 ml when the pressure decreases to 0.971 atm, with T and n constant.
To solve this problem, we use the combined gas law, which relates the pressure, volume, as well as temperature of a gas;
P₁V₁ / T₁ = P₂V₂ / T₂
where P₁, V₁, and T₁ are initial pressure, volume, and temperature, respectively, and P₂ and V₂ are final pressure and volume, respectively.
In this problem, we have temperature and amount of gas (n) are constant, so we can simplify the combined gas law to;
P₁V₁ = P₂V₂
We can plug in the given values and solve for V₂;
P₁ = 1.00 atm
V₁ = 652 ml
P₂ = 0.971 atm
V₂ = ?
P₁V₁ = P₂V₂
1.00 atm x 652 ml = 0.971 atm x V₂
652 ml / 0.971 atm = V₂
V₂ = 671 ml
Therefore, the new volume of the balloon is 671 ml.
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Meaning of particles
Answers
3. in utah, there is a large body of water known as the great salt lake. even during cold winters the water does not freeze over. why not? the salt in the water raises the freezing point. the salt in the water changes the polarity of the water. the salt in the water lowers the freezing point. the salt in the water affects the hydrogen bonding.
Answers
"Salt lowers water's freezing point" is correct. Utah's Great Salt Lake never freezes because of its high salt content. Salt dissolves in water, reducing its freezing point. The correct answer is option c.
Salt ions prevent water from freezing. Salt's freezing point depression keeps Great Salt Lake water liquid at cold conditions.
The Great Salt Lake in Utah doesn't freeze in winter because salt lowers the freezing point. The freezing point of pure water is 0 degrees Celsius (32 degrees Fahrenheit), however when salt is dissolved in water, it disturbs ice crystal formation and prevents freezing. Sodium ions (Na+) and chloride ions (Cl-) make up salt. When salt dissolves in water, these ions separate and surround water molecules. This is hydration.
Water molecules' hydrogen bonding is affected by salt. Hydrogen bonding links water molecules to produce ice crystals. The hydrogen bonding network is disrupted by salt, making it harder to create ice crystals. Because of this, the Great Salt Lake stays liquid even in cold winters. The Great Salt Lake's salt lowers the freezing point through influencing hydrogen bonding between water molecules.
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What are the maximum number of electrons that can occupy the first five principal energy
levels?
Answers
Answer: 10 electrons.
Explanation:
Answer:
Explanation:
the maximum number of electrons that can occupy the first five principle energy is that
we know that the maximum number of electrons in an energy level given by the formulae is 2(n^2)
here n=5 as given in the question for the energy level for the 5
put that 5 in the formula we get 2(5^2)
50
so therefore the maximum number of electrons that can be in the first five energy principle level is 50
The correct coefficients needed to balance the following reaction are:
___ PbI2 + ___ ZnS → ___ PbS + ___ZnI2
a) 1, 2, 2, 1
b) 1, 1, 1, 1
c) 1, 1, 2, 2
d) 2, 1, 1, 2
Answers
Consolidating the european aerospace industry was a strategic decision to compete against boeing because boeing had a ________ advantage.
Answers
Consolidating the European aerospace industry was a strategic decision to compete against Boeing because Boeing had a technological advantage.
In the past, Boeing had been a leader in innovation, and the company had developed several advanced technologies that gave it a competitive edge in the aerospace industry. These included the use of advanced materials and composite structures, advanced avionics and control systems, and advanced manufacturing techniques. Consolidating the European aerospace industry was a way to bring together the best minds and technologies from across the continent to compete with Boeing on equal footing.
The idea was that by pooling resources and expertise, the European aerospace industry could create a more competitive and innovative ecosystem that would be able to match and even surpass the technological advancements of Boeing. Today, the European aerospace industry is a major global player, and the consolidation of the industry has played a key role in this success.
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2. What evidence is there that green ink is a mixture?
Answers
Answer:
The fact that the green ink separated from the rubbing alcohol proves that it is indeed a mixture.
2Na + Cl2 → 2NaCI
How many grams of NaCl will be produced from 33. 0 g of Na and 34. 0 g of Cl. ?
Answers
Total, 56.2 grams of NaCl will be produced from 33.0 g of Na and 34.0 g of Cl₂.
To determine the amount of NaCl produced from 33.0 g of Na and 34.0 g of Cl₂, we need to first convert the given masses of Na and Cl₂ to moles using their respective molar masses;
Molar mass of Na = 23.0 g/mol
Molar mass of Cl₂ = 2 x 35.5 g/mol = 71.0 g/mol
Number of moles of Na = 33.0 g / 23.0 g/mol = 1.43 mol
Number of moles of Cl₂ = 34.0 g / 71.0 g/mol = 0.48 mol
Balanced chemical equation shows that 2 moles of Na will reacts with 1 mole of Cl₂ to produce a 2 moles of NaCl. Therefore, the limiting reactant in this reaction is Cl₂ since it is the reactant that produces the least amount of product.
From balanced equation, we can see that 1 mole of Cl₂ produces 2 moles of NaCl. So, the number of moles of NaCl produced from 0.48 moles of Cl₂ is;
0.48 mol Cl₂ x (2 mol NaCl / 1 mol Cl₂) = 0.96 mol NaCl
Finally, we can convert the number of moles of NaCl produced to grams using its molar mass;
Molar mass of NaCl = 23.0 g/mol + 35.5 g/mol = 58.5 g/mol
Mass of NaCl produced = 0.96 mol x 58.5 g/mol = 56.2 g
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Some calcifiers can use bicarbonate (HCO3-) to make their shells.
How will they be affected by the decrease in pH?
Answers
Answer:
The removal of this ion from water by the calcifiers will definitely decrease the pH of water.
What is the bicarbonate ion?
The bicarbonate ion is the ion that is designated as HCO3-. We must notice that this ion is present in abundant amounts in the sea. This amount definitely make the sea slightly alkaline.
Now we must note that the removal of this ion from water by the calcifiers that require it to make their shell will definitely decrease the pH of water.
Explanation:
The removal of this ion from water by the calcifiers will definitely decrease the pH of water.
What is the bicarbonate ion?The bicarbonate ion is the ion that is designated as \(HCO^{3-}.\) We must notice that this ion is present in abundant amounts in the sea. This amount definitely makes the sea slightly alkaline.
Now we must note that the removal of this ion from water by the calcifiers that require it to make their shell will definitely decrease the pH of water.
Hence, the removal of this ion from water by the calcifiers will definitely decrease the pH of water.
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How is energy from grass passed on between animals
Answers
Answer:
its nuber 3
wdPDAPS
Explanation:
The Ideal Gas Law is as follows: PV = nRT.
Rearrange the equation for each variable.
P =
V=
n =
R=
T =
Answers
Answer:
p=nRT/V
v=nRT/P
n=PV/RT
t=PV/nR
H e l p,,, ill give brainliest :)
Answers
Hi there! :)
Both are compounds.
\(CO_{2}\) contains 1 carbon (C) atom and 2 oxygen (O) atoms.
It contains two different elements, so it is a COMPOUND.
\(Na_{2} O\) is an IONIC compound with elements Sodium (Na) and Oxygen (O), which are different elements. Therefore, it is also a COMPOUND.
Which two rocks are primarily composed of a mineral that bubbles with acid?
Answers
Answer:
chalk bubbles with vinegar
the purpose of an experiment is to determine if the _____ is correct or incorrect
Answers
The purpose of an experiment is to determine if the hypothesis is correct or incorrect
What is an experiment?An experiment is a research or test conducted in order to prove or disprove a hypothesis.
An experiment can also be done to answer a question.
A hypothesis is an answer provided to explain an observation without conducting tests to back up the explanation given.
Therefore, an experiment is aimed at determining if a hypothesis is correct or not.
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A 1.2 M solution of H2S reacts with a 0.80 M solution of NH2-. What volume of H2S is needed to neutralize 45mL of NH2-?
Answers
The volume of H2S needed to neutralize 45mL of NH2- is 0.053 L
What do you mean by neutralization reaction?A neutralization reaction, in which an acid and a base react to form water and salt.
The reaction between H2S and NH2- is a neutralization reaction. The balanced equation for the reaction is:
H2S(aq) + NH2-(aq) → NH4HS(aq)
We know that the concentration of H2S is 1.2 M and the concentration of NH2- is 0.80 M and we are trying to find the volume of H2S needed to neutralize 45mL of NH2-.
The number of moles of H2S can be calculated by using the formula:
moles = molarity x volume
The volume of H2S needed to neutralize 45mL of NH2- is equal to the number of moles of NH2- in 45mL, divided by the concentration of H2S.
moles of NH2- = 0.080 L * 0.80 mol/L = 0.064 mol
volume = moles of NH2- / molarity of H2S
volume = 0.064 mol / 1.2 mol/L = 0.053 L
Therefore, the volume of H2S needed to neutralize 45mL of NH2- is 0.053 L.
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15. why might doubling the number of moles of hcl decrease the rate of hcl production? select the acid convertase enzyme is converting hcl back into h and cl- select cannot be determined select no more h or cl- exists to be converted select the acid convertase enzyme has become inactive
Answers
When doubling the number of the moles of the HCl decrease the rate of HCl production because the acid convertase enzyme is converting HCl back into H⁺ and Cl⁻.
The reaction is as follows :
H⁺ + Cl⁻ ⇄ HCl
If we double the number of the moles of the HCl , it decreases the rate of the HCl production because of the reason that the acid convertase enzyme is converting the HCl back into the H⁺ and Cl⁻. The purpose of the enzyme is to allow the conversion of the reactant to the product and the product back to the reactant
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What is Nuclear fusion
Answers
Answer:
Nuclear fusion is a reaction in which two or more atomic nuclei are combined to form one or more different atomic nuclei and subatomic particles (neutrons or protons).
A 10.0 g sample of a gas occupies 7.69 L at 1.00 atm and 27.0 C. The gas has been determined to be diatomic. What is the gas
Answers
ANSWER
EXPLANATION
Given that
The mass of the gas is 10.0g
The volume of the gas is 7.69L
The pressure of the gas is 1.00 atm
The temperature of the gas is 27 degrees Celcius
Follow the steps below to find the molar mass of the gas
Step1; Assume the gas is an ideal gas
\(\text{ Pv = nRT}\)Step 2; Find the number of mole of the gas using the equation above
\(\begin{gathered} \text{ T K = t}\degree C\text{ + 273.15} \\ \text{ T K = 27 + 273.15} \\ \text{ T K = 300.15K} \end{gathered}\)\(\begin{gathered} \text{ R is 0.0825 L.atm . K}^{-1}\text{ mol}^{-1} \\ \text{ 1 }\times\text{ 7.69 = n }\times\text{ 300.15 }\times\text{ 0.08205} \\ \text{ 7.69 = n24.627} \\ \text{ Divide both sides by 24.627} \\ \text{ n = }\frac{7.69}{24.627} \\ \text{ n = 0.312 moles} \end{gathered}\)Step 3; find the molar mass of the sample
\(\begin{gathered} \text{ mole = }\frac{\text{ mass}}{molar\text{ mass}} \\ \text{ cross multiply} \\ \text{ mass = mole x molar mass} \\ \text{ molar mass =}\frac{mass}{\text{ mole}} \\ \\ \text{ molar mass = }\frac{10}{0.312} \\ \text{ molar mass = 32.05} \end{gathered}\)