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Dovator [93]
3 years ago
10

Please help me and get me the right answer

Chemistry
1 answer:
weqwewe [10]3 years ago
5 0

Answer:

8.21 × 10^{15} Hz

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What is the relationship between elements ,atoms ,and compounds
Svetach [21]
Elements are separate particles that contain the properties of only one type of element (pure substance) and an atom represents that element as the smallest non divisible particle that retains the properties of that element. Compounds can be formed by conjoining different atoms together in different ratios and shapes, so a combination of elements.
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What is the mass of 975 mL of mercury? Its density is 13.5 g/mL
miss Akunina [59]

Answer:

72.22 g

Explanation:

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Describe what the specific heat capacity (c) tells us about a substance. *<br> Your answer
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Answer:

it tells us of the specific amount of energy required to change the state of one mole of a substance either from solid to liquid or liquid to gas and vice versa without change in temperature

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If you have 222 g of radioisotope with a half-life of 5 days, how much isotope would remain after 15 days?
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If the half life is 5 days, you would have to divide 222 by 2 3 times.
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after four half life the mass would be
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the percent would be
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