Less than. The concentration is the moles per unit volume. If the solution is diluted, less moles are present in the same volume so the concentration is less

7 0

3 years ago

Which of the following has the most thermal energy?

wariber [46]

Answer:

Hi, There!

Thanks for choosing Brainly!

<h2>Question</h2>

Which of the following has the most thermal energy?

<h2>Answer</h2>

The entire atmosphere of the earth

Explanation:

<h2>Below is some More Information</h2>

Thermal energy is produced by the movement of molecules in an object.

Boiling water on a stove is an example of thermal energy

I hope I was Able to help you Understand!

Good Luck on your assignment!

5 0

3 years ago

PLEASE ANSWER

icang [17]

Answer: A. Object Q refracts red light, and object R diffracts red light.

Explanation:

4 0

3 years ago

Calculate the amount of water (in grams) that must be added to (a) 6.80 g of urea [(NH2)2CO] in the preparation of a 9.95 percen

Lemur [1.5K]

Explanation:

Amount of water required in each case:

(a)The mass% of the solution is:9.95

Mass of solute that is urea is 6.80 g

To determine the mass of solvent water use the formula:

$mass percent=\frac{mass of solute}{mass of solution} x 100\\\\9.95=(6.80g/mass of solution )x100\\mass of solution =(6.80 /9.95)x100\\=68.3 g$

Hence the mass of solvent = mass of solution - the mass of solute

=68.3 g - 6.80g

=61.5 g

Hence, the answer is mass of solvent water required is 61.5 g.

(b) Given mass%=1.70

mass of solute MgBr2 = 29.3 g

The mass of solvent water required can be calculated as shown below:

$mass percent=\frac{mass of solute}{mass of solution} x 100\\\\1.70=(29.3g/mass of solution )x100\\mass of solution =(29.3 g /1.70)x100\\=1720 g$

The mass of the solution is 1720 g.

Mass of solvent water = mass of solution - mass of solute

=1720 g - 29.3 g

=1690.7 g

Answer: The mass of water required is 1690.7 g.

5 0

3 years ago