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2 years ago

A gas has a volume of 7.0 L and a mass of 8.50 X 109 grams. What is its density in g/ml?

Chemistry

1 answer:

natka813 [3]2 years ago

8 0

Answer:

The answer is

Explanation:

The density of a substance can be found by using the formula

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

From the question

mass of gas = 8.5 × 10^9 g

But 1 L = 1000 mL

So 7 L = 7000 mL

volume = 7000 mL

So the density of the gas is

$density = \frac{8.5 \times {10}^{9} }{7000} \\ = 1214285.714285...$

We have the final answer as

1, 214, 285.71 g/mL

Hope this helps you

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2 years ago

Which one of these is NOT a sign of chemical change? *

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2 years ago

What is the boiling point of a solution containing 203 g of ethylene glycol (C2H6O2) and 1035 g of water? (Kb for water is 0.52

Andru [333]

Answer:

101,37°C

Explanation:

Boiling point elevation is one of the colligative properties of matter. The formula is:

ΔT = kb×m <em>(1)</em>

Where:

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And m is molality of solution (mol of ethylene glycol / kg of solution). Moles of ethylene glycol (MW: 62,07g/mol):

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Molality is: 3,27moles of ethlyene glycol / (1,035kg + 0,203kg) = 2,64m

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X - 100°C = 0,52°C/m×2,64m

X - 100°C = 1,37°C

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2 years ago

The following reaction is a _______ reaction.

jasenka [17]

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2 years ago

A 7.00-mL portion of 8.00 M stock solution is to be diluted to 0.800 M. What will be the final volume after dilution? Enter your

amm1812

Explanation:

The number of moles of solute present in liter of solution is defined as molarity.

Mathematically, Molarity = $\frac{\text{no. of moles}}{\text{Volume in liter}}$

Also, when number of moles are equal in a solution then the formula will be as follows.

$M_{1} \times V_{1} = M_{2} \times V_{2}$

It is given that $M_{1}$ is 8.00 M, $V_{1}$ is 7.00 mL, and $M_{2}$ is 0.80 M.

Hence, calculate the value of $V_{2}$ using above formula as follows.

$M_{1} \times V_{1} = M_{2} \times V_{2}$

$8.00 M \times 7.00 mL = 0.80 M \times V_{2}$

$V_{2} = \frac{56 M. mL}{0.80 M}$

= 70 ml

Thus, we can conclude that the volume after dilution is 70 ml.

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2 years ago