suppose that the distribution of acidity (ph) of rainwater is roughly bell-shaped. the water tested after the most recent storm had a z-score of 1.8. this means that the acidity of that rain

Answer:

ovulation

Explanation:

Ovulation is a phase in the menstrual cycle when your ovary releases an egg (ovum)

Explanation:

could you post the text? its inconvenient to go back and forth to the picture.

The percent of the object submerged in the solution is 20%, determined by comparing the densities of the object and the solution.

To determine the percent of the object that will be submerged, we can compare the densities of the object and the solution.

The percent of the object submerged can be calculated using the formula:

Percent submerged = (Density of object / Density of solution) * 100

In this case, the density of the object is 0.5 g/ml and the density of the solution is 2.5 g/ml. Substituting these values into the formula:

Percent submerged = (0.5 g/ml / 2.5 g/ml) * 100 = 0.2 * 100 = 20%

Therefore, 20% of the object will be submerged in the solution.

To know more about densities refer here :    

https://brainly.com/question/17202158#

#SPJ11                

Answer:

2 single, 0 double, and 1 triple

Explanation:

H-C≡C-H

Answer: \(\text{N}_{5}\text{O}_{10}\)

Explanation:

This means the molecular mass of nitrogen dioxide is \(14.0067+2(15.9994)=46.0055\) g/mol.

Dividing this molecular mass of the compound we need to find, we get that

\(\frac{230.05}{46.0055} \approx 5\).

So, the final answer is \(\boxed{\text{N}_{5}\text{O}_{10}}\)

Radiocarbon dating, also known as carbon-14 dating, is a method used to determine the age of organic materials. It is based on the radioactive decay of the isotope carbon-14 (14C).

Living organisms constantly absorb carbon, including a small amount of carbon-14, from the atmosphere. When an organism dies, it no longer takes in carbon-14, and the existing carbon-14 begins to decay at a known rate. By measuring the ratio of carbon-14 to stable carbon isotopes (carbon-12 and carbon-13) in a sample, scientists can estimate the time that has elapsed since the organism's death. Radiocarbon dating is effective for dating materials up to about 50,000 years old.

Therefore, both radiocarbon dating and radiopotassium dating rely on the principles of radioactive decay. The decay rates of the isotopes used in these methods are well-established and constant, allowing for accurate age determinations.

For more details regarding radiopotassium dating methods, visit:

https://brainly.com/question/32267082

#SPJ4

Answer:

255.5cm³

Explanation:

A solution that is 38.08 % by weight has 38.08g of sulfuric acid per 100g of total solution. Thus, mass of solution you need to obtain 125g is:

125g H₂SO₄ × (100g solution / 38.08g H₂SO₄) = 328.3g of solution

As density of the solution is 1.285g / cm³, the volume of 328.3g is:

328.3g × (1cm³ / 1.285g) = 255.5cm³

The 22.7 g  in μg ( micro gram )  is 22.7 × \(10^{-6}\) .

We need to convert between units in order to ensure accuracy and prevent measurement misinterpretation.

For example , we do not measure a pencil's length in kilometers . In this situation , one must convert from kilometers  ( km ) to centimeters ( cm ) . In most cases, multiplicative conversion factors are used to convert one unit to another of the same quantity .

Sometimes the units of measurement used may not correspond to the standards required for a particular process or application, as well as the measuring choice and convenience. The mass of object in micro gram unit is less than gram .

to learn more about  μg please click here ,

https://brainly.com/question/16630356

#SPJ1

Glassmakers have learned how to precisely place minute amounts of atoms such as sodium, potassium, and aluminum among the silicon atoms to create hard, flexible, and scratch-resistant glass.

This process begins with the main ingredient, silica, which consists of silicon atoms. Silica is heated until it becomes molten, and at this stage, glassmakers carefully introduce other elements like sodium, potassium, and aluminum. These additional elements act as network modifiers, changing the properties of the glass.
When sodium or potassium atoms are added to the molten silica, they create a more tightly packed structure. This is because they are smaller in size and can fit between the silicon atoms more easily. As a result, the glass becomes stronger, more flexible, and resistant to scratches.
Aluminum is added to the mix to further enhance these properties, as it bonds well with both silicon and oxygen atoms, creating a more rigid network. The combination of sodium, potassium, and aluminum in the silica structure leads to the production of high-quality, durable glass that can withstand daily wear and tear.
In summary, glassmakers skillfully incorporate sodium, potassium, and aluminum atoms among silicon atoms to create glass that is both hard and flexible, as well as resistant to scratches. This is achieved through a delicate process involving the heating of silica and the careful addition of these modifying elements.

For more information on Glassmakers see:

https://brainly.com/question/8953947

#SPJ11

The moles of substances required to make scrambled eggs is given in the cooking recipe for scrambled eggs.

A mole of. a substance is the amount of that substance which contains the avogadro number (6.02 × 10^23) of particles in it.

A mole of a substance is usually given as a standard unit measurement of that substance.

The mass of 1 mole of is known as the molar mass if that substance.

From the recipe for preparing scramble eggs given, the moles of substances required are as follows:

Therefore, the moles of substances required to make scrambled eggs is given in the cooking recipe for scrambled eggs.

Learn more about moles of substances at: https://brainly.in/question/132101

#SPJ1

Answer:

C

Explanation:

Amps measure the flow of Electrons

Answer:

C

Explanation:

is c

An aqueous solution contains 0.10 M NaOH. The solution is very dilute. Therefore, the correct option is option A.

Dilution is the act of "simply adding additional solvent to a solution, such as water, to lower the quantity of a particular solute within the solution." In order to dilute a solution, more solvent must be added without increasing solute.

A common method for producing a solution with a certain concentration is to start with a higher concentration and gradually add water until the desired concentration is reached. An aqueous solution contains 0.10 M NaOH. The solution is very dilute.

Therefore, the correct option is option A.

To know more about dilution, here:

https://brainly.com/question/28997625

#SPJ4

Answer:

It should be the answer D. A type of atom

Explanation:

A model is a "synthetic coordination entity that closely approaches the properties of a metal ion in a protein"

An ion is a charged atom.

To determine the spread of a fire from one combustible item to another, several factors must be considered. The first factor is the type of material that is burning, as different materials have varying degrees of flammability.

The second factor is the distance between the combustible items, as this affects the heat transfer between them. The third factor is the ventilation in the area, as air flow can both help or hinder the spread of fire. The fourth factor is the temperature of the fire, as higher temperatures can cause nearby materials to ignite more easily. Finally, the presence of any flammable liquids or gases in the area can greatly increase the risk of fire spread. It is important to accurately determine the spread of a fire in order to develop effective firefighting strategies and to ensure the safety of both people and property. Firefighters and fire safety experts use a variety of tools and techniques to assess fire spread, including thermal imaging cameras, smoke detectors, and computer simulations. Regular fire safety inspections and maintenance can also help prevent fires from starting and spreading.

learn more about flammable liquids refer: https://brainly.com/question/29975527

#SPJ11

Given that the empty flask weighs 390.0 g and we want to add 2.2 g of sugar.

We want to calculate the weight we would expect to see on the balance when we're done adding the sugar. It is known that the empty flask weighs 390.0 g, and the weight of sugar to be added is 2.2 g.

The total weight of the flask and sugar would be 390.0 + 2.2 = 392.2 g. Hence, we would expect to see 392.2 g on the balance when we're done adding the sugar.

The weight of the flask can be determined by weighing the empty flask before the addition of the sugar. The sugar is then added, and the flask is weighed again to get the total weight of the flask and sugar. The difference between the total weight and the weight of the empty flask is the weight of the sugar added.

to know more about sugar here:

brainly.com/question/30022610

#SPJ11

The balanced equation for the reaction of iron with water that results in the production of iron oxide and hydrogen gas is

3 Fe (s) + 4H₂O (g) → Fe₃O₄ (s) + 4H₂ (g)

Iron does not react directly with liquid water but react with water vapour. When the reaction happens, it results in the formation of a solid and a gas. The products of the reaction are Iron oxide and hydrogen. The equation of the reaction would be

Fe (s) + H₂O (g) → Fe₃O₄ (s) + H₂ (g)

Now, we need to balance the equation. On the right-hand side, we have 3 Fe, 4 O and 2 H. Similarly on the left-hand side there are 1 Fe, 1 O and 2 H.

To balance the equation, we add 3 to Fe, 4 to H₂0 and 4 to H₂.

As a result, the balanced chemical equation for the reaction would be

3 Fe (s) + 4H₂O (g) → Fe₃O₄ (s) + 4H₂ (g)

To know more about Balanced equation

https://brainly.com/question/12192253

#SPJ1

Answer:

chlorate changes to chlorous acid

54g of sulfur and 100 g of oxygen are placed into a sealed container and allowed to react, then 80 g of sulfur dioxide will be produced.

The given reaction is: 2S + 3O2 → 2SO3
We are given the ratio of sulfur and oxygen required for the reaction to occur and the amount of product formed. Using this information, we can calculate the amount of sulfur dioxide formed as follows:

First, we need to determine the limiting reactant, i.e., the reactant that is completely consumed in the reaction. This can be done by comparing the amount of each reactant with the amount required for the reaction:

For sulfur: 54 g / 2 g = 27 (theoretical number of moles)
For oxygen: 100 g / 3 g = 33.33 (theoretical number of moles)

Since sulfur has the smaller theoretical number of moles, it is the limiting reactant.

Using the ratio of reactants and the amount of sulfur present, we can calculate the amount of oxygen required for complete reaction:

3O2 / 2S = x / 54 g
x = 81 g of oxygen

Since only 100 g of oxygen is available, there will be excess oxygen present after the reaction is complete. The amount of excess oxygen can be calculated as follows:

Excess oxygen = 100 g - 81 g = 19 g

Now, we can use the amount of sulfur trioxide formed in the given reaction to calculate the amount of sulfur dioxide formed:

2SO3 → 2SO2 + O2

From the balanced equation, we see that 2 moles of SO3 produce 2 moles of SO2. Therefore, the ratio of SO2 to SO3 is 1:1.

The amount of SO3 formed in the reaction is:

2S / 2 x 80 g/mol = 80 g

Therefore, the amount of SO2 formed will also be 80 g.

Therefore, 80 g of sulfur dioxide will be produced.

To know more about reactant visit:

https://brainly.com/question/24142291

#SPJ11

the number of half-lives that would have occur to reduce a 15 g sample of Nobelium-254 down to 0.09375 g is 7.3

To calculate the number of half-lives that would have occur to reduce a 15 g sample of Nobelium-254 down to 0.09375 g, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the number of half-lives that would have occur to reduce a 15 g sample of Nobelium-254 down to 0.09375 g is 7.3

Learn more about half-lives here: https://brainly.com/question/25750315

Answer: Molar mass of Al = 26.98 g/mol

mass of Al = 12 g

mol of Al = (mass)/(molar mass)

= 12/26.98

= 0.4448 mol

According to balanced equation

mol of AlCl3 formed = moles of Al

= 0.4448 mol

Answer: 0.445 mol

hope this help boo❤️❤️❤️

Explanation:

Answer:

Explanation:

Anecdotal evidence abounds of animals, fish, birds, reptiles, and insects exhibiting strange behavior anywhere from weeks to seconds before an earthquake

you always hear the boom of an earthquake before it hits

As the earth's crust is crushed and strained prior to an earthquake, radon gas is released from trapped areas as new cracks and openings are made.

Answer:

Fluorine

Explanation:

Answer:

Covalent bonds usually occur between nonmetals. For example, in water (H2O) each hydrogen (H) and oxygen (O) share a pair of electrons to make a molecule of two hydrogen atoms single bonded to a single oxygen atom.

Answer:

\(T1=166.66K\)

Explanation:

According to Gay-Lussac’s law simply states that the ratio of the initial pressure and temperature is equal to the ratio of the final pressure and temperature for a gas of a fixed provided that the mass is kept at a constant volume.

Given:

Initial pressure, P1 = 1 atm

Final pressure, P2 = 1.5 atm

Final temperature, T2 = 250 K

The law can be applied using the below formula

P1T2 = P2T1

Then,

T1 = (P1T2)/P1 = (1*250)/(1.5) = 166.66 Kelvin.

\(T1=166.66K\)

:

Answer:

\(T_1=166.7K\)

Explanation:

Hello,

In this case, by applying the Gay-Lussac's law which help us to understand the pressure-temperature gas behavior via a directly proportional relationship:

\(\frac{P_1}{T_1} =\frac{P_2}{T_2}\)

In such a way, as we are asked to compute the initial temperature knowing the initial pressure and final both temperature and pressure, so we solve for it:

\(T_1=\frac{T_2P_1}{P_2}=\frac{250K*1atm}{1.5atm} \\\\T_1=166.7K\)

Best regards.

Respiration is the chemical process by which organic compounds release energy. The compounds change into different ones by exergonic reactions. The hydrolysis of adenosine triphosphate (ATP) to adenosine diphosphate (ADP) and phosphoric acid (Pi) releases energy (it is an exergonic reaction).

Answer:

Option 3 or C An ion is all in Electrostatic forces so it's c if its not I'll work it out for you

An ion with a negative charge will repel another ion with a negative charge is the correct statement.

The electrostatic force is the force that exists between electrically charged particles or objects at rest means that objects having similar charge repel each other whereas objects having different charges attract each other.

An ion with a negative charge will repel another ion with a negative charge is the statement true about electrostatic forces because electrostatic force always occur between static object having charges on it.

Learn more about force here: https://brainly.com/question/12970081

calcium is shiny

Explanation:

because calcium is a silvery metal

Part C the answer is Δ[S8]/Δt = 0.0026 M/s

Parte D the answer is v = 0.0026 M/s