What is the danger of distilling until the flask is dry?

How many seconds in the school year? (One school year is 180 days long.) Please show your work, and report your answer with the

Masja [62]

Answer:

259200

Explanation:

multiply 180×24×60

259,200 seconds

8 0

3 years ago

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100 POINTS PLEASE ANSWER!

Tatiana [17]

Answer:

Answer would be 4/2

Explanation:

A is the best answer choice because it was between A and D but 2 is not the denominator so it couldnt be D

5 0

3 years ago

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The chemical reaction shown above takes place in a closed system. What is true about the system while the reaction occurs? A. Th

Ede4ka [16]

Answer: In a chemical reaction, the total mass of the particles in the system stays the same

Explanation:

Law of conservation of mass states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form.

This also means that total mass on the reactant side must be equal to the total mass on the product side in a chemical reaction.

Every balanced chemical reaction follows law of conservation of mass.

For Example: Formation of water molecule

$2H_2+O_2\rightarrow 2H_2O$

Total mass on reactant side = $[2(2\times 1)+(2\times 16)]=36g/mol$

Total mass on product side = $[2((2\times 1)+16)]=36g/mol$

Hence, in a chemical reaction, the total mass of the particles in the system stays the same

5 0

3 years ago

After food is consumed, chemical nutrients are absorbed into the blood. The blood then carries these nutrients to the body's cel

IceJOKER [234]

Answer:c. oxygen,light,and glucose combine to produce high energy molecules

Explanation:

3 0

3 years ago

Hydrogen sulfide, H2S, has the characteristic odor of rotten eggs. If a sample of H2S gas at 755.0 torr and 25.0°C in a 2.00-L c

gavmur [86]

Answer:

0.153 atm or 116.1 torr

Explanation:

Hello, in the attached photo you will find the numerical procedure to obtain the pressure in the second state.

- Take into account that in the first part, the moles are needed based on the ideal gas equation, because they are subsequently used in the computation of the second state's pressure.

Best regards.

5 0

4 years ago