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vovikov84 [41]
3 years ago
8

Question 4 (1 point)

Chemistry
2 answers:
Alex3 years ago
8 0

Answer:

Wusup,

Your answer is B: Larger than the moon

hope that helps, tell me if u get it right.

Explanation:

Brilliant_brown [7]3 years ago
8 0

Answer:

I put B and it was incorrect, sadly I dont know the correct answer

Explanation:

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Changing the number of protons in an atom makes<br><br> A. an ion<br> B. an isotope
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A. an ion

The atom gains a net electrical charge if the number of protons and electrons are not equal which makes it an ion.
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PLEASE HELP!<br><br> what are the steps that occur during the combustion of hydrogen?
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Answer:

Explanation:

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The temperature of the water was measured at different depths of a pond.
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A. Dependent variable
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Which of the following statements is false concerning the formula of a compound?
aalyn [17]

Answer:

B. The number of atoms in a molecular formula is always greater than the number of atoms in an empirical  formula.

Explanation:

It is not always true that the number of atoms in a molecular formula is always greater than the number of atoms in an empirical formula.

The chemical formulae of a compound are of two main types;

  • The empirical formula is that which expresses the composition of a compound in the simplest whole number ratio.
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Sometimes the number of atoms in the molecular and empirical formula can be the same.

Also, the number of atoms in the molecular formula is always greater than that of the empirical formula when they are not the same.

3 0
3 years ago
If the half-life of a radioactive substances is 590 million years and you have 40 atoms of it, how many half-lives will have pas
Nady [450]

Answer:

3

Explanation:

Applying,

2^{n'} = R/R'............... Equation 1

Where n' = number of halflives that have passed, R = Original atom of the substance, R' = atom of the substance left after decay.

From the question,

Given: R = 40 atoms, R' = 5 atoms

Substitute these values into equation 1

2^{n'} = 40/5

2^{n'} = 8

2^{n'} = 2³

Equation the base,

n' = 3

3 0
2 years ago
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