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sergij07 [2.7K]
3 years ago
10

How is the AHfusion used to calculate the energy needed to melt a mass of

Chemistry
1 answer:
posledela3 years ago
8 0

Answer:

C I think from what I did to solve!!

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H2O(g) → H2 + O2(g) Predict whether the reaction above would have an increase or a decrease in entropy.
nadya68 [22]
Since the reaction has one mole of reactants versus two moles of products, the reaction would have a decrease in entropy. One mole of gas exerts less pressure than two moles of gas, and therefore one mole of gas has more entropy than two moles of gas.

Hope this helps
5 0
4 years ago
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Explain why NO is more soluble in water than either N2 or O2. Fill in the following blanks.
jek_recluse [69]

Answer:

a. Larger molecular size

b. Ability to react with water

c. Polarity

d. Shorter bond length

Explanation:

Ethene is a larger molecule than oxygen and nitrogen hence it is more soluble than the both other gases .

SO2 dissolves readily in water to yield an acid solution. It is an acid anhydride.

Nitric oxide is a polar compound. It remains very much polar while nitrogen and oxygen are non polar.

Nitrogen is sp hybrized, this leads to a very short bond and does not easily interact with oxygen and nitrogen

3 0
3 years ago
Ptrpared a solution of sodium chloride (NaCl) by measuring out 49.Umol of sodium chloride into 150. ML. Volumetric flask and fil
ArbitrLikvidat [17]

Answer:

The answer to your question is below

Explanation:

Data

Substance = NaCl

moles of NaCl = 49

volume = 150 ml

Process

Molarity is a unit of concentration that makes a relation of the moles of a substance and the volume.

Molarity = moles / volume (L)

1.- Convert 150 ml to L

                  1000 ml ------------------ 1 L

                     150 ml -----------------  x

                      x = (150 x 1) / 1000

                      x = 0.15 L

2.- Substitution

Molarity = 49 / 0.15

Molarity = 326. 7

I have a doubt if the number of moles is 49 moles or 49μmoles            

4 0
4 years ago
Which of the following is a true statement?(1 point)
kkurt [141]

Answer:

B

Explanation:

8 0
3 years ago
Molar mass in silver nitrate
ohaa [14]

Answer:169.87 g/mol

Explanation: (107.87 +14.007 + (3 x 15.999))= 169.874

7 0
3 years ago
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