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user100 [1]
3 years ago
6

Looking at the Bohr models of atoms offer an explanation as to WHY the atomic size changes as it does for both periods and group

s.
Periods:
Groups:

Chemistry
1 answer:
andriy [413]3 years ago
5 0
Element 87 francium have the highest atomic size, so in short the closest element to francium have the high atomic size.

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Compare heat vs. temperature
Jlenok [28]

Answer:

See the answer beloew, please.

Explanation:

The concepts of heat and temperature are related, but they are not the same. Temperature refers to a physical quantity which indicates the amount of heat. The latter corresponds to the energy that moves from one body to another, thus being able to raise or lower the temperature.

5 0
3 years ago
How many moles are in 8.25×10²⁵ molecules of water(H20)?​
enyata [817]

Answer:

82500000000000000000000000

Explanation:

This is the only answer I can come up with.

6 0
3 years ago
Mass defect is associated with:
gizmo_the_mogwai [7]

Answer:

B. Nuclear fission

Explanation:

Nuclear binding energy is used to determine whether fission or fusion will be a favorable process. The mass defect of a nucleus represents the mass of the energy binding the nucleus, and is the difference between the mass of a nucleus and the sum of the masses of the nucleons of which it is composed.

7 0
3 years ago
For the following reaction:
vlada-n [284]

Answer:

Nitrogen is the limiting reactant, and  

3.74

grams of ammonia is formed.

Explanation:

We have the familiar Haber process equation...

N

2

(

g

)

+

3

H

2

(

g

)

⇌

2

N

H

3

(

g

)

Since the mole ratio of  

N

2

to  

H

2

is  

1

:

3

, then for every mole of nitrogen, we would need three moles of hydrogen.

Explanation:

4 0
3 years ago
Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric acid. true or false
JulsSmile [24]

Answer:

The given statement is true.

Explanation:

Chlorine gas is prepared by heating manganese dioxide with hydrochloric acid.T he reaction takes place in two steps

1) Reaction between manganese dioxide and HCl gives manganese(II) chloride along with water and nascent oxygen.

MnO_2+2HCl\rightarrow MnCl_2+H_2O+O...[1]

2) Then this nascent oxygen formed in above reaction oxidizes HCl into water and chlorine gas.

2HCl+O\rightarrow Cl_2+H_2O..[2]

So , the net chemical reaction comes out to be:

MnO_2+4HCl\rightarrow MnCl_2+H_2O+Cl_2

5 0
3 years ago
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