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Leona [35]
3 years ago
8

What is the meaning of radioactive substance​

Chemistry
2 answers:
Oksana_A [137]3 years ago
8 0

Explanation:

  1. He atoms that decay naturally are called radioactive substances
Tasya [4]3 years ago
7 0

Answer:

Explanation:

Radioactive substances are atoms that decay naturally. They can give off alpha particles, beta particles and gamma radiation.

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You measure the mass of a model car to be 230 grams.The actual mass is 218 grams .what is your percent error
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Your percent is 5.50458716
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3 years ago
What is mass????????????????????
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Answer:

Do you need the definition or the equation to find it?

Explanation:

Equation:

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3. A thin lead apron is used to protect patients from harmful X rays. If the sheet measures 75.0 cm by 55.0 cm by 0.10 cm, and t
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Answer:

4.67 kg

Explanation:

Given data

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V = 75.0 cm \times  55.0 cm \times 0.10 cm = 413 cm^{3}

Step 2: Calculate the mass of the sheet

The density (ρ) is equal to the mass divided by the volume.

\rho = \frac{m}{V} \\m = \rho \times V = \frac{11.3g}{cm^{3} }  \times 413cm^{3} = 4.67 \times 10^{3} g = 4.67 kg

6 0
3 years ago
A group of students collects data to determine whether compounds were ionic or covalent. They placed each compound in a small bo
yan [13]

Answer:

the answer is B.  

No, as ionic compounds are only conductive in an aqueous (water) solution

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3 years ago
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