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UNO [17]
2 years ago
10

The density of a substance is the ratio of its mass to its volume. The formula for density is: D = mass/volume. If the density a

nd the volume of a liquid are known, its mass can be found by
a .adding its density to its volume
b .dividing its density by its volume
c. multiplying its volume and density
d. subtracting density from its volume
Chemistry
1 answer:
salantis [7]2 years ago
5 0

Answer:

I think it's B.

Explanation:

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When 6.13 g of a certain molecular compound X are dissolved in 90. g of formamide (NH2COH), the freezing point of the solution i
belka [17]

Answer:

321.6 g/Mol

Explanation:

mass of solvent in kilograms = 90g/1000 = 0.09 Kg

Given that;

ΔTf = Kf . m . i

Where;

Kf = freezing point constant = 4.25 °C/Kg mol

m = molality of the solution

i = Van't Hoff factor = 1 (since the substance is molecular)

ΔTf = freezing point of pure solvent - freezing point of solution

freezing point of pure solvent = 3 °C

ΔTf = 3 °C - 2.1 °C

ΔTf = 0.9  °C

0.9= 4.25 * 6.13/M/0.09 * 1

0.9= 26.0525/M * 1/0.09

0.9 = 26.0525/0.09 M

0.9 * 0.09M = 26.0525

M = 26.0525/0.9 * 0.09

M= 321.6 g/Mol

8 0
3 years ago
Describe how modeling is useful in studying the structure of the atom.
pishuonlain [190]

Answer:

Scientists use models to study atoms because atoms are extremely small and can't even be seen. If atoms can't be seen, it's easier to study and.

Explanation:

hope it helps you

3 0
2 years ago
If one serving of a packaged frozen dinner contains 5.2 grams of saturated fat and the maximum recommended daily intake of satur
den301095 [7]

Answer:

The percentage of the daily value for saturated fat provided by one package of this food is 26.0%

Explanation:

It has been given from the preceding statement that one package of the dinner provides 5.2g out of the 20 grams recommended for daily need. This is 5.2/20 x 100 given 26.0% of the daily neded value will be provided by a plate or package of the dinner.

7 0
2 years ago
What is a molarity a measurement
USPshnik [31]

Answer:

Molarity indicates the number of moles of solute per liter of solution and is one of the most common units used to measure the concentration of a solution.

Explanation:

8 0
3 years ago
Question:
Dahasolnce [82]
If you can have more than 1 answer then the dependent variable is graphed on the Y-axis and and is usually used for comparison since they are usually the experiment results. If you can only have one answer then the dependent variable is graphed on the y-axis.
8 0
3 years ago
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