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vivado [14]
3 years ago
13

1. During an endothermic chemical reaction, a gas is consumed and a liquid produced.

Chemistry
1 answer:
tino4ka555 [31]3 years ago
8 0
1. No
2.No
I hope this helps:)
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What is the standard metric unit of volume?
klio [65]
I think its cubic meters....
7 0
3 years ago
At 1000 K, a sample of pure NO2 gas decomposes. 2 NO2(g) equilibrium reaction arrow 2 NO(g) + O2(g) The equilibrium constant KP
kirill115 [55]

<u>Answer:</u> The pressure of NO and NO_2 in the mixture is 0.58 atm and 0.024 atm respectively.

<u>Explanation:</u>

We are given:

Equilibrium partial pressure of O_2 = 0.29 atm

For the given chemical equation:

                   2NO_2(g)\rightleftharpoons 2NO(g)+O_2(g)

Initial:              a

At eqllm:        a-2x          2x          x

Calculating for the value of 'x'

\Rightarrow x=0.29

Equilibrium partial pressure of NO = 2x = 2(0.29) = 0.58 atm

Equilibrium partial pressure of NO_2 = a - 2x = a - 2(0.29) = a - 0.58

The expression of K_p for above equation follows:

K_p=\frac{p_{O_2}\times (p_{NO})^2}{(p_{NO_2})^2}

We are given:

K_p=158

Putting values in above expression, we get:

158=\frac{0.29\times (0.58)^2}{(a-0.58)^2}\\\\a=0.555,0.604

Neglecting the value of a = 0.555 because it cannot be less than the equilibrium concentration.

So, a=0.604

Equilibrium partial pressure of NO_2 = (a - 0.58) = (0.604 - 0.58) = 0.024 atm

Hence, the pressure of NO and NO_2 in the mixture is 0.58 atm and 0.024 atm respectively.

4 0
3 years ago
5. The element copper has naturally occurring isotopes with mass numbers of 63
Mademuasel [1]

Answer:

Average atomic mass  = 63.62 amu.

Explanation:

Abundance of Co⁶³ = 69.2%

Abundance of Co⁶⁵ = 30.8%

Atomic mass of Co⁶³ = 63 amu

Atomic mass of  Co⁶⁵  = 65 amu

Average atomic mass = ?

Solution:

Average atomic mass  = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass)  / 100

Average atomic mass  = (63×69.2)+(65×30.8) /100

Average atomic mass =  4359.6 + 2002 / 100

Average atomic mass  = 6361.6 / 100

Average atomic mass  = 63.62 amu.

4 0
3 years ago
Changes in a state of matter include?
o-na [289]

Answer: melting, freezing, sublimation, deposition, condensation, and vaporization

4 0
3 years ago
Read 2 more answers
an astronaut on the moon throws a ball at a velocity of 4.1 m/s straight up. assuming the gravity on the moon is 1/6 that of ear
Aleonysh [2.5K]

Answer:

(1/2)(1.62) t^2 = 1.4

That will give you the time, t

Explanation:

hope this helps(✿◡‿◡)

5 0
3 years ago
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