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Virty [35]
3 years ago
7

What is the difference between heat of formation and heat of reaction? Give examples and units

Chemistry
1 answer:
yanalaym [24]3 years ago
8 0

Answer:

The main difference between the heat of formation and heat of reaction is that heat of formation is the amount of energy either absorbed or released during the formation of a compound whereas heat of reaction is the amount of energy either absorbed or released during any chemical reaction.

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Four people weigh a standard mass of 10.00 g on the same balance. Which of the following sets of readings suggest measurements t
poizon [28]
Four people weigh a standard mass of 10.00 g on the same balance. The set of readings suggest measurements that are neither precise <span>nor accurate is the one with less mass</span>
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3 years ago
A solution with a [H+] of 1.22x10-3M has a pH of _____________________.
Kryger [21]

Answer:

2.91

Explanation:

pH=-log(H3O+)

- Hope that helps! Please let me know if you need further explanation.

7 0
3 years ago
How many milliliters of 4.00 M NaOH are required to exactly neutralize 50.0 milliliters of a 2.00 M solution of HNO3 ?
kramer

Answer: The volume of NaOH required is 25.0 ml

Explanation:

According to the neutralization law,

n_1M_1V_1=n_2M_2V_2

where,

n_1 = basicity HNO_3 = 1

M_1 = molarity of HNO_3 solution = 2.00 M

V_1 = volume of  HNO_3 solution = 50.0 ml

n_2 = acidity of NaOH = 1

M_1 = molarity of NaOH solution = 4.00 M

V_1 = volume of  NaOH solution =  ?

Putting in the values we get:

1\times 2.00\times 50.0=1\times 4.00\times V_2

V_2=25.0ml

Therefore, volume of NaOH required is 25.0 ml

3 0
3 years ago
An object with a mass of 5.0 kg accelerates 8.0 m/s2 when an unknown force is applied to it. What is the amount of the force?
atroni [7]
The correct amount of force i believe is
f= 40 newton
i got the answer by using the formula below
force = mass x acceleration
f=5kg *8.0 m/s^2


7 0
3 years ago
Which of the following are properties of solution?
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Point of the graph because it’s the point
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