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san4es73 [151]
3 years ago
14

V. = 22.4 L; P= 1 atm; P, = ? atm; V, = 2.8 L

Chemistry
1 answer:
Ne4ueva [31]3 years ago
5 0

Answer:

The pressure is 8 atm

Explanation:

We use the Boyle Mariotte formula, where for a given mass of gas at constant temperature, the pressure and volume vary inversely:

P1xV1 = P2xV2

P2= (P1xV1)/V2= (1 atm x 22,4 L)/ 2,8L= 8 atm

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You will need to prepare 12 mL of 25% Sodium Phosphate Buffer (pH 4) solution for Activity 2. What volume of the stock Sodium Ph
zhuklara [117]

Assuming the concentration of stock solution is 50% sodium phosphate buffer solution, the volume of stock solution required is 6 mL and the volume of water required is 6 mL.

<h3>What volume of a stock Sodium phosphate buffer and water is needed to 12 mL of 25% sodium phosphate buffer of pH 4?</h3>

The process of preparing solutions from stock solutions of higher concentration is known as dilution.

Dilution is done with the aid of the dilution formula given below:

  • C1V1 = C2V2

where

  • C1 is the concentration of stock solution
  • V1 is the volume of stock solution required to prepare a diluted solution
  • C2 is the concentration of the diluted solution prepared
  • V2 is the final volume of the diluted solution

From the data provided:

C1 is not given

V1 is unknown

C2 = 25%

V2 = 12 mL

  • Assuming C1 is 50% solution

Volume of stock, V1, required is calculated as follows:

V1 = C2V2/C1

V1 = 25 × 12 /50

V1 = 6 mL

Therefore, the volume of stock solution required is 6 mL and the volume of water required is 6 mL.

Learn more about dilution formula at: brainly.com/question/7208546

6 0
2 years ago
If the solvent in a solution is water, the solution is
BlackZzzverrR [31]

Answer:

I don't know

Explanation:

Yet but I will find it for you

7 0
3 years ago
Name the following ionic compounds: (a) Na2SO4, (b)Cu(NO3)2 (c) Fe2(CO3)3
Sindrei [870]

Answer and Explanation:

(a) Na_2So_4 : its chemical name is sodium sulfate in which sodium is present as Na_2^+ and sulfate is present as So_4^{2-}

(b) Cu(NO_3)_2 : Its chemical name is copper nitrate which is a inorganic compound which is mostly crystalline in nature

(c)Fe_2(Co_3)_2 : Its chemical name is iron carbonate or ferric carbonate

5 0
3 years ago
Difference between fluids and nonfluids
Mamont248 [21]

Answer:

All liquids are fluids but not all fluids are liquids. Fluids basically describe anything that can flow as a result of a difference in pressure between two points. Liquids on the other hand are a subset of fluids. Liquids are the incompressible fluids. These are the fluids who's density does not change sharply with pressure.

Gases are also fluids, they form the compressible fluids. They do flow as a result of difference in pressure between two points but at the same time they can be compressed or expanded. Their density fluctuates with pressure.

Hence fluids consist of 2 mutually exclusive groups of compressible and incompressible fluids. Liquids are the incompressible fluids and hence form a subset of the more general term fluid.

5 0
2 years ago
Select all that apply.
inysia [295]

Answer: has zero mass

is an electron

has a -1 charge

is electromagnetic energy

Explanation:

A beta-particle is an electron emitted from the nucleus of an atom following the decay of a neutron into a proton. Beta rays are deflected by a magnetic field in a direction that indicates a negative charge, thus they are electromagnetic in nature.

The beta particle released is basically a electron with -1 charge and no mass.

General representation of beta particle in the form of _Z^A\textrm {X} given as _{-1}^0e

where,

Z represents Atomic number

A represents Mass number

X represents the symbol of an element

8 0
3 years ago
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