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Mashcka [7]
3 years ago
9

What type of isotope undergoes radioactive decay?

Chemistry
2 answers:
Veronika [31]3 years ago
7 0

Answer:

A: one that has a nucleus with the same number of protons and neutrons

Explanation:

On edg

igor_vitrenko [27]3 years ago
4 0

Answer:All elements with 84 or more protons are unstable; they eventually undergo decay. Other isotopes with fewer protons in their nucleus are also radioactive.

Explanation:

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What's the balanced chemical equation of magnesium reacting with silver nitrate to produce silver and magnesium nitrate?
Strike441 [17]

The balanced equation is Mg + 2AgNO₃ ⟶ Mg(NO₃)₂ + 2Ag

Step 1. Write the <em>unbalanced equation </em>

Mg + AgNO₃ ⟶ Mg(NO₃)₂ + Ag

Step 2. Start with the<em> most complicated-looking formula</em> [Mg(NO₃)₂] and balance its atoms.

Mg: Already balanced —1 atom each side.

N: We need 2 N on the left. Put a 2 in front of AgNO₃.

1Mg + 2AgNO₃ ⟶ 1Mg(NO₃)₂ + Ag

O: Already balanced —6 atom6 each side.

Step 3: Balance <em>Ag</em>

We have 2Ag on the left. We need 2Ag on the right.

1Mg + 2AgNO₃ ⟶ 1Mg(NO₃)₂ + 2Ag

4 0
3 years ago
The movement of food energy from one organism to another is called a
Leni [432]
It’s called a food chain
6 0
3 years ago
There are two isotopes of an unknown element, X-19 and X-21. The abundance of X-19 is 14.55%. A weighted average uses the percen
alekssr [168]

Answer:

2.765amu is the contribution of the X-19 isotope to the weighted average

Explanation:

The average molar mass is defined as the sum of the molar mass of each isotope times its abundance. For the unknown element X that has 2 isotopes the weighted average is defined as:

X = Mass X-19 * Abundance X-19 + MassX-21 * Abundance X-21

The contribution of the X-19 isotope is its mass (19.00 amu) times its abundance (14.55% = 0.1455). That is:

19.00amu * 0.1455 =

2.765amu is the contribution of the X-19 isotope to the weighted average

8 0
3 years ago
!!HELP PLS!! A compound sample contains 0.783g of C, 0.196 g of H, 0.521 g 0 and the molecular formula molar mass is 184.27g/mol
Delvig [45]

Answer:

First

divide each element by its Molecular Mass to get their respective moles

Then Divide through by the lowest of the moles

You'll have the ratio of Carbon Hydrogen and Oxygen to be

C2H3O

Given Molecular Mass=184.27

C2H3On=184.27

n(12x2 + 1x3 + 16) =184.27

Evaluating this... You'll have n=4.3

Pls check if you assigned the correct value to each element

4 0
2 years ago
Which is produced in a synthesis reaction?
olga55 [171]

Answer: a single compound

Explanation: I know it

6 0
2 years ago
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