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Serjik [45]
4 years ago
14

Loudness is expressed in

Chemistry
2 answers:
Alex787 [66]4 years ago
8 0

Answer:

Waves

Explanation:

     

Archy [21]4 years ago
6 0

Answer:

Decibel

Explanation:

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Ions are atoms that have gained or lost which subatomic particles?
Bad White [126]
Protons cannot be lost without the atoms becoming an entirely different element. Elements can infact have different numbers of neutrons within the same element, but neutrons are not related to the electrical charge. The answer is c. electrons.
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Which substance in an atom determines its chemical properties and allows elements to form chemical bonds?
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Electrons allow for chemical bonds to form.
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Explain how magma forms
Andre45 [30]

Answer:

rocks heat up and slowly turn into magma

3 0
3 years ago
What would the percentage of thorium-232 (parent compound) be in a rock that was dated 1.4 billion years?
trasher [3.6K]

Answer:

93.33%

Explanation:

Thorium is a radioactive element with a molecular weight of 232g/mol. Thorium is very stable and can have 14.05 billion years of half-life period. Every half-life passed, the parent compound mass will be decayed by half. If the age of the rock is 1.4 billion years, then the amount of the parent compound will be:r = ½^(time elapsed/half-life)

r = ½^(1.4bil years/14.05 bil years)

r = ½^(0.0996)= 0.9333

r= 93.33%

The rock will have 93.33% of the parent compound and 6.67% of the decayed compound.

5 0
4 years ago
In the chemical equation 2Mg(s) + O2(g) ? 2MgO(s),
cluponka [151]
The correct answer is D
4 0
3 years ago
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