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4 years ago

PLEASE HELP FAST !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Chemistry

1 answer:

MakcuM [25]4 years ago

5 0

The answer is D: 400N
your welcome

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Pls help me!!!!!!!!!!!!!! I will give brainliest first answer i have 20 more minutes left of this quiz so pretty pls will you he

PSYCHO15rus [73]

Answer:

32 ppm

Explanation:

371-339=32 ppm

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3 years ago

Read 2 more answers

What happens when a hydrocarbon combusts?

Anika [276]

I am pretty sure the answer is A

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3 years ago

Will give brainly

kicyunya [14]

Answer:

Ch4 + 2O2 ----> CO2 + 2H2O

Explanation:

Ch4 has 4H, 1C

O2 has 2 O2

CO2 has 1 C, 2O

H2O has 1 H, 2O

you need to add 2 to O2 to balance it. Add 2 to H2O to balance the H and O

3 0

3 years ago

The heat of vaporization for water is 40. 7 kJ/mol. How much heat energy must 150. 0 g of water absorb to boil away completely?

netineya [11]

The heat absorbed by the water sample for vaporization has been 6,105 kJ. Thus, option D is correct.

The heat of vaporization has been the amount of heat required to vaporize 1 gram of liquid.

The heat required for the vaporization has been given as:

$Q=m\Delta H_{vap}$

<h3 /><h3>Computation for the Heat of vaporization</h3>

The heat of vaporization of water has been given as, $\Delta H_{vap}=40.7\;\rm kJ/mol$

The mass of water sample has been, $m=150\;\rm g$

Substituting the values for the heat energy absorbed, <em>Q:</em>

<em />

<em /> $Q=150\;\times\;40.7\;\rm kJ\\
\textit Q=6,105\;kJ$

The heat absorbed by the water sample for vaporization has been 6,105 kJ. Thus, option D is correct.

Learn more about heat of vaporization, here:

brainly.com/question/2427061

3 0

3 years ago

What dose a neutron has a mass of

amm1812

Answer:

939,565,413.3 eV/c2

Explanation:

5 0

4 years ago