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alexandr402 [8]
3 years ago
10

50 Points

Chemistry
2 answers:
natta225 [31]3 years ago
8 0

Answer:

The answer is Nuclear

grin007 [14]3 years ago
6 0

Answer:

nuclear

Explanation:

This is because when the protons and neutrons split the energy being released is heat, also known as nuclear fission.

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Describe how chemists use mass as a way of getting a precise estimate of the number of entities in a sample.
jok3333 [9.3K]

Answer:

Explanation:

To start with, the mass of a substance is centered on the amount of particles contained in it.

Mass of a substance measure is the same anywhere it is taken.

In chemistry, the concept of mole is used to find the exact estimate of  the number of entities in a sample.

A mole of substance is quantity that is used to express the number of particles contained in it.

  1 mole of any substance contains the Avogadro's number of particles.

This amount of particles is given as 6.02 x 10²³; the particles can be protons, neutrons, electrons e.t.c.

To find the number of moles;

        Number of moles  = \frac{mass}{molar mass}

       Through this, we clearly ascertain the number of entities in a sample given the mass.

5 0
3 years ago
What characterizes a radioactive atom?
Doss [256]

. Its nucleus is unstable.

4 0
2 years ago
Which of the statements are true ONLY for lonic compounds? (select all that apply)
DENIUS [597]

Answer:

Smallest unit is called a formula unit

Forms between a metal and a nonmetal

Formed by the transfer of electrons

Good conductor when dissolved in water

Forms repeating patterns in a crystal lattice structure

Have high melting and boiling points

Explanation:

5 0
3 years ago
If 25.8 grams of BaO dissolve in enough water to make a 212 gram solution, what is the percent by mass of the solution?
Scorpion4ik [409]
Mass of solute = 25.8 g

mass solution = 212 g

% =(  mass of solute / mass solution ) x 100

% = ( 25.8 / 212 ) x 100

% = 0.122 x 100

= 12.2 %



6 0
3 years ago
Read 2 more answers
plz answer 7 & 8 because I dont get the answer... oh and you need to use the picture for the questions 7 & 8 thanks
djyliett [7]
7. An exothermic reaction
8. The bonds are forming
4 0
3 years ago
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