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2 years ago

C D

Chemistry

1 answer:

Helga [31]2 years ago

5 0

I think it’s tissue I just did it

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Is this correct pls answer as soon as possible

Lunna [17]

Answer: Yes

Explanation:

I just know it is.

4 0

3 years ago

A weather balloon is filled with helium that occupies a volume of 500 L at 0.995 atm and 32.0 ℃. After it is released, it rises

Yuki888 [10]

Answer : The volume of the balloon at the new location is, 591.3 L

Explanation :

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

$\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}$

where,

$P_1$ = initial pressure of gas = 0.995 atm

$P_2$ = final pressure of gas = 0.720 atm

$V_1$ = initial volume of gas = 500 L

$V_2$ = final volume of gas = ?

$T_1$ = initial temperature of gas = $32.0^oC=273+32=305K$

$T_2$ = final temperature of gas = $-12^oC=273+(-12)=261K$

Now put all the given values in the above equation, we get:

$\frac{0.995atm\times 500L}{305K}=\frac{0.720atm\times V_2}{261K}$

$V_2=591.3L$

Therefore, the volume of the balloon at the new location is, 591.3 L

3 0

3 years ago

Suppose an aqueous mixture is prepared containing magnesium sulfate (mgso4), copper(ii) sulfate (cuso4), metallic magnesium, and

ANEK [815]

<span>The copper will disengage from the sulfate and become evident in the aqueous solution, leading to greater uptake of sulfate by the metallic magnesium. This will lead to the creation of greater copper isolated.</span>

3 0

3 years ago

Describe how you would prepare 500.0mL of an aqueous solution that is 30.0% isopropyl alcohol by volume

Artyom0805 [142]

Answer:

The solution can be prepared by adding 150.0 mL of isopropyl alcohol to 350.0 mL of water to make 30.0% isopropyl alcohol aqueous solution.

Explanation:

∵ The volume% of a solution = [(volume of the solute(isopropy)/(volume of the solution)] x 100.

The volume % = 30.0%, volume of the solution = 500.0 mL.

∴ Volume of the solute = (the volume% of a solution)(volume of the solution)/100 = (30.0%)(500.0 mL)/100 = 150.0 mL.

∵ The volume of solution = volume of the solute + volume of water

∴ Volume of water = volume of the solution - volume of the solute = (500.0 mL) - (350.0 mL) = 150.0 mL.

<em>So, the solution can be prepared by adding 150.0 mL of isopropyl alcohol to 350.0 mL of water to make 30.0% isopropyl alcohol aqueous solution.</em>

5 0

3 years ago

3. Which of the following is a property of a metal?

iren [92.7K]

Answer:

the answer would be d. usually dull in appearance

Explanation:

because brittle bendable and poor conductor of heat and electricity are all for the non-metals

5 0

3 years ago

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