Can someone please write this in y’all’s own words please and I’ll give you branly

Answer:

3) Vapor pressure in atm = 0.13 atm

Explanation:

Answer:

3.840 atm

Explanation:

We use Boyle's law, which relates the pressure (P) and the volume (V) of a gas at a constant temperature. The change from initial P and V (P₁ and V₁) to final P and V (P₂ and V₂) is expressed as:

P₁V₁ = P₂V₂

We have the following data:

P₁= 0.960 atm

V₁= 200.0 mL

V₂ = 50.0 mL

Thus, we introduce the data in the equation and calculate the final pressure P₂:

P₂ = P₁V₁/V₂= (0.960 atm x 200.0 mL)/50.0 mL = 3.840 atm

Therefore, a pressure of 3.840 atm is needed to reduce the volume of the gas from 200.0 mL to 50.0 mL.

Answer:

A

Explanation:

Got a calculation of 8.05297

Answer:

C. 3.6 m/s

Explanation:

I just took a test on a-pe-x and it was correct! :)

Answer:

colorless liquid with a strong smell and a white solid with no smell. The substances’ repeating groups of atoms are shown above on the left. After they were mixed, the chemist analyzed the results and found two substances. One ending substance had the repeating group of atoms shown above on the right.

Explanation:

Answer:

triangles

Explanation:

Answer:

it is b, a stethiscope is the thing they put on your heart

Explanation:

Answer:

760ml of water

Explanation:

Answer: 800mL

Explanation:

20% of 1000mL is 200. 1000mL - 200mL is 800mL

Answer:

bacteria spoiling food

hope this helps

have a good day :)

Explanation:

Answer:

Hydrogen ion concentration is more conveniently expressed as pH, which is the logarithm of the reciprocal of the hydrogen ion concentration in gram moles per liter. Thus, in a neutral solution the hydrogen ion (H+) and the hydroxyl ion (OH−) concentrations are equal, and each is equal to 10−7. A pH of 7 is neutral

Explanation:

As we know that chloride ion is halogen. So it has seven valence electrons in its valence shell. Hence it gains one electron from others during chemical reaction to be stable. So Chloride ion have a negative charge of -1.

Hope it will help :)❤

Answer:

Explanation:

The answer is C Liquid

Answer:

The pressure of the gas would be 3.06 atm

Explanation:

Amonton's law states that the pressure is directly proportional to the absolute temperature of a gas under constant volume. The equation is:

P1 / T1 = P2 / T2

Where P1 is the initial pressure = 3.16atm

T1 is initial absolute temperature = 273.15 + 32.2°C = 305.35K

P2 is our incognite

And T2 is = 273.15 + 22.9°C = 296.05K

Replacing:

3.16atm / 305.35K = P2 / 296.05K

3.06 atm = P2

The Answer Is Sample A

Density -

[tex]density = \frac{mass}{volume} [/tex]

Input The Formula For Both Equations To Find Density.

Sample A -

[tex]d = \frac{40}{10} [/tex]

[tex]d = 4[/tex]

Sample B -

[tex]d = \frac{45}{15} [/tex]

[tex]d = 3[/tex]

Answer:

A = 349 g.

Explanation:

Hello there!

In this case, since the radioactive decay kinetic model is based on the first-order kinetics whose integrated rate law is:

[tex]A=Ao*exp(-kt)[/tex]

We can firstly calculate the rate constant given the half-life as shown below:

[tex]k=\frac{ln(2)}{t_{1/2}} =\frac{ln(2)}{58year}=0.012year^{-1}[/tex]

Therefore, we can next plug in the rate constant, elapsed time and initial mass of the radioactive to obtain:

[tex]A=500g*exp(-0.012year^{-1} *30year)\\\\A=349g[/tex]

Regards!

Answer:

A precipitation reaction is one in which substances in solution are mixed and an insoluble product is made. The insoluble product is called a precipitate and can be seen as a solid forming in the reaction mixture.

Answer:

Answers 1. An amide linkage between the carboxyl group of one amino acid and the amine group of the other amino acid. 2. An ester is a compound formed from the reaction of a carboxylic acid and an alcohol. ( I apologise, I cant figure out number 3.. )

I know it’s E and A

Explanation: did you count it’s exactly 28, also the electrons are not visible.

Ps: I’m in 5th grade, what grade is this, if my suggestion was correct then holy crackers.

Answer:

Explanation:

what do u need to know

Answer:

The pH of a solution with a Hydronium (H₃O⁺) ion concentration of 0.001 M is 3.

Explanation:

pH, short for Hydrogen Potential, is a measure used to establish the level of acidity or alkalinity of a solution.

pH indicates the amount of hydrogen ions present in a solution or substance. Mathematically the pH is the negative logarithm of the molar concentration of hydrogen ions or protons (H⁺) or hydronium ions (H₃O⁺).

pH= - log [H⁺]= - log [H₃O⁺]

The pH scale goes from 0 to 14. Values ​​less than 7 indicate the range of acidity and those greater than 7 indicate alkalinity or basicity. The value 7 is considered neutral.

In this case, [H₃O⁺]= 0.001 M.

Replacing in the definition of pH:

pH= - log (0.001 M)

Solving:

pH= 3

The pH of a solution with a Hydronium (H₃O⁺) ion concentration of 0.001 M is 3.

Explanation:

Hi,

The number of protons is equal to the atomic number. The number of electrons in a neutral atom is equal to the number of protons. So, in this case, you have 72 protons and 72 electrons.

I hope this helps :)

If an element has the atomic number 72, then the number of protons is also equal to 72. As it is clearly mentioned in the question that it is a neutral atom, which means the number of protons is equal to the number of electrons which is also 72.

An atomic number may be defined as the number of a chemical element in the modern periodic table through which the elements are systematically arranged in order of increasing the number of protons in the nucleus.

According to the context of this question, the atomic number of every element is always equal to the number of protons it has. While in a neutral atom, the number of electrons is equal to the number of protons. For calculating the number of neutrons, you have to subtract the atomic number from the atomic mass.

Therefore, there are 72 protons of an element whose atomic number is 72. The number of electrons is also 72.

To learn more about Atomic numbers, refer to the link:

https://brainly.com/question/27655686

#SPJ2

Explanation:

The particles of matter are continuously in motion due to which tehy collide with each other, and this creates a vibration in the solids

I hope it is correct ☺️

Answer:

233.38 g/mol

Explanation:

you find the molar mass of each element and then add them up.

Answer:1 answer number 1

Explanation:

Answer:

C

Explanation:

cause i'm smart

Answer:

D

Explanation:

Because it says tree roots breaking rocks into smaller rocks.

Hope this helped!

Answer:

these species share a common ancestor

Explanation:

Answer:

there is nothing here

Explanation: