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Sedbober [7]
2 years ago
12

What is the role of energy in forming bonds, and what is the role of energy in breaking bonds?​

Chemistry
1 answer:
Andrei [34K]2 years ago
6 0

Answer:

Energy is used to break bonds in reactants, and energy is released when new bonds form in products. ... In other chemical reactions, it takes more energy to break bonds in reactants than is released when bonds form in products. These reactions, called endothermic reactions, absorb energy.

Explanation:

Hope this helps please let me know if it does or doesn't help! Good luck:))

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HELP ME ON THIS
diamong [38]

Answer:

The attractive force between them decreases

Explanation:

This is because they become localised.

7 0
2 years ago
Compared to an atom of C-12, an atom of C-14 has
KonstantinChe [14]

Explanation:

Carbon-12 atoms have stable nuclei because of the 1:1 ratio of protons and neutrons.

Carbon-14 atoms have nuclei which are unstable. C-14 atoms will undergo alpha decay and produce atoms of N-14. Carbon-14 dating can be used to determine the age of artifacts which are not more than 50,000 years old.

8 0
3 years ago
Calcium carbonate is a compound that is used to make chalk for drawing on rocks or pavement. One molecule has one atom of calciu
Black_prince [1.1K]

Answer:

the chemical formula is caca3

6 0
2 years ago
Read 2 more answers
Small quantities of oxygen can be prepared in the laboratory by heating potassium chlorate, KClO 3 ( s ) . The equation for the
Pavlova-9 [17]

Answer:

Mass of O_2 produced = 32 g

Explanation:

Calculation of the moles of KClO_3 as:-

Mass = 82.4 g

Molar mass of KClO_3 = 122.55 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

Moles= \frac{82.4\ g}{122.55\ g/mol}

Moles= 0.67237\ mol

From the reaction shown below:-

2KClO_3\rightarrow 2KCl+3O_2

2 moles of potassium chlorate on reaction forms 3 moles of oxygen gas

So,

0.67237 moles of potassium chlorate on reaction forms \frac{3}{2}\times  0.67237 moles of oxygen gas

Moles of oxygen gas = 1 mole

Molar mass of oxygen gas  = 32 g/mol

<u>Mass of O_2 produced = 32 g</u>

6 0
3 years ago
A racehorse completes the Kentucky Derby, a distance of 1.25 miles, in
forsale [732]

Answer:

D. 60.3 kilometers per hour

Explanation:

Hello,

In this case, we first compute the miles in kilometres:

1.25miles*\frac{1.60934km}{1mile} =2.012km

Then the minutes in hours:

2.00min*\frac{1h}{60min}=0.033h

Finally, the velocity:

v=\frac{2.012km}{0.033h}\\ \\v=60.3km/h

Thus, answer is D. 60.3 kilometers per hour

Best regards.

4 0
3 years ago
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