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Nimfa-mama [501]
2 years ago
12

The mass number of a nucleus is the number of: protons nucleons electrons neutrons

Chemistry
1 answer:
KiRa [710]2 years ago
3 0

protons

there aint rlly an explanation tbh

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What is the temperature in kelvin of the Xe in the balloon?
katrin [286]

A2.37 l balloon contains .115 mol of xenon gas, xe(g), at a pressure of 954 torr. what is the temperature, in kelvin, of the xe in the balloon? express the answer using 3 significant figures.

3 0
3 years ago
For chemistry purposes we will always measure delta Ts (temperature changes) with which scale?
dezoksy [38]

Answer:

Kelvin

Explanation:

8 0
3 years ago
46. True or false. Chemical reactions do not involve changes in the chemical bonds that join
Naddika [18.5K]

Answer:

Chemical reactions do not involve changes in the chemical bonds that join

atoms in compounds :

<u>False</u>

Explanation:

Chemical reaction are the reaction in which old bonds break and new  bonds are formed . The formation of new bond result in formation of new compounds . This happen because new bond are result of linking different atoms by the bond.

For example : Water formation from Oxygen and Hydrogen is a chemical process :

2H_{2}+O_{2}\rightarrow 2H_{2}O

Original(old) bonds are :

H-H bond in H2 and O-O bonds in O2

In H2 = Hydrogen is joined to Hydrogen

IN O2 = Oxygen is joined to oxygen

New Bonds =

O-H bonds in water (H2O)

Oxygen is joined to hydrogen = New Bond formation

Hence,

<u>Chemical reactions do involve changes in the chemical bonds that join </u>

<u>atoms in compounds</u>

<u />

3 0
3 years ago
Classify N2 as a substance
ludmilkaskok [199]
N2O is compound becoz it has more than one type of atoms. 

<span>Air is homogeneous mixture becoz it has different gases which are does not bonded to each other</span>
6 0
3 years ago
An atom has 2 protons in its nucleus . Which of the following must be true for this atom to have no net electrical charge
ehidna [41]
If an atom has 2 protons, then it must also have 2 electrons for there to be no charge. An extra electron will cause for you to have a negative charge, and if you have more protons than electrons, then you will have a positive charge. :)
7 0
3 years ago
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