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3 years ago

May someone help me with a few questions?

Chemistry

1 answer:

Gennadij [26K]3 years ago

5 0

Answer: again these are equations you should know; I hope you WILL LEARN them, and how to write your own; these must have come from the book or lecture, and I do not want to berate you, I want you to improve more every day. But it is very late here, and I must finally go. Study hard!

No matter what, study hard.

I loved research; tons of fun, meeting new people, and learning new things.

Hopefully many people here will also.

I bid you all a Good Night.

Explanation:

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How many moles of H2SO4 are needed to prepare 200 mL of a 1.0 M solution?

jok3333 [9.3K]

The answer is 0.2moles

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3 years ago

Please help with #2 and #3

Vaselesa [24]

Answer:

2. $V_2=17L$

3. $V=82.9L$

Explanation:

Hello there!

2. In this case, we can evidence the problem by which volume and temperature are involved, so the Charles' law is applied to:

$\frac{V_2}{T_2}=\frac{V_1}{T_1}$

Thus, considering the temperatures in kelvins and solving for the final volume, V2, we obtain:

$V_2=\frac{V_1T_2}{T_1}$

Therefore, we plug in the given data to obtain:

$V_2=\frac{18.2L(22+273)K}{(45+273)K} \\\\V_2=17L$

3. In this case, it is possible to realize that the 3.7 moles of neon gas are at 273 K and 1 atm according to the STP conditions; in such a way, considering the ideal gas law (PV=nRT), we can solve for the volume as shown below:

$V=\frac{nRT}{P}$

Therefore, we plug in the data to obtain:

$V=\frac{3.7mol*0.08206\frac{atm*L}{mol*K}*273.15K}{1atm}\\\\V=82.9L$

Best regards!

6 0

3 years ago

Heather mixes two white liquids together. Immediately, a gray liquid forms.

Klio2033 [76]

The grey liquid is related to the white liquids because the change in colour is the result of a chemical change/reaction between the two white liquids.

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3 years ago

What happened during the Renaissance that encouraged progress in the study of matter?

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3 years ago

4. If the speed of an object increases, its kinetic energy

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Answer:

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2 years ago