The number of valence electrons in sodium is/are<br> a 1<br> b 4<br> C2<br> d 3

A chemist must dilute 97.1 ml of aqueous magnesium fluoride solution until the concentration falls to 389 microMolarity . He'll

mojhsa [17]

Answer:

0.302L

Explanation:

<em>...97.1mL of 1.21m M aqueous magnesium fluoride solution</em>

<em />

In this problem the chemist is disolving a solution from 1.21mM = 1.21x10⁻³M, to 389μM = 389x10⁻⁶M. That means the solution must be diluted:

1.21x10⁻³M / 389x10⁻⁶M = 3.11 times

As the initial volume of the original concentration is 97.1mL, the final volume must be:

97.1mL * 3.11 = 302.0mL =

0.302L

6 0

3 years ago

Physical and chemical properties of a piece of cooked chicken and a glass of kool-aid

Lunna [17]

A cooked chicken would be somewhat burnt or cooked. A glass of kool aid would be mixed, or aka homogenous mixture. The glass would maintain a color, because its not water.

6 0

3 years ago

What is the volume of 88.2 g of silver metal (density = 10.50 g/cm^3)

babymother [125]

Answer:

The answer is

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

$volume = \frac{mass}{density}$

From the question

mass = 88.2 g

density = 10.5 g/cm³

The volume is

$volume = \frac{88.2}{10.5}$

We have the final answer as

Hope this helps you

8 0

3 years ago

Read 2 more answers

Helium occupies a volume of 3.8 L at –45°C. What was its initial temperature when it occupied 8.3 L?

USPshnik [31]

Answer:

98.3 gradius Celsius

Explanation:

This problem is solved using the Ideal Gas Equation

pV = nRT

...

Please see the step-by-step solution in the picture attached below.

Hope this answer can help you. Have a nice day!

3 0

4 years ago

Water is a good solvent when A) the solute is hydrophobic. B) the solute is nonpolar. C) the solute is polar. D) the solvent is

pochemuha

the answer is C. the solute polar water itself is a polar solvent so it combines well with other polar solvents (which basically have polar molecules)

8 0

3 years ago

The number of valence electrons in sodium is/are a 1 b 4 C2 d 3