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Eddi Din [679]
3 years ago
7

True or False: Water is a liquid at – 5 °C.

Chemistry
2 answers:
Lilit [14]3 years ago
8 0

Answer:

False

Explanation:

sveticcg [70]3 years ago
6 0

Answer:

False

Explanation:

Water's freezing point is at 0 degrees celsius

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quizlet a basement is successfully sealed so that more radon may not enter the space, but 5.7×107 radon atoms are already trappe
12345 [234]

After 25 days, it remains radon 5.9x10^5 atoms.

Half-life is the time required for a quantity (in this example number of radioactive radon) to reduce to half its initial value.

N(Ra) = 5.7×10^7; initial number of radon atoms

t1/2(Ra) = 3.8 days; the half-life of the radon is 3.8 days

n = 25 days / 3.8 days

n = 6.58; number of half-lifes of radon

N1(Ra) = N(Ra) x (1/2)^n

N1(Ra) = 5.7×10^7 x (1/2)^6.58

N1(Ra) = 5.9x10^5; number of radon atoms after 25 days

The half-life is independent of initial concentration (size of the sample).

More about half-life: brainly.com/question/1160651

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6 0
1 year ago
How long is a half life for carbon 14?
babunello [35]

Answer:

half-life of 5,700 ± 40 years

Explanation:

6 0
3 years ago
Read 2 more answers
In the activated complex for a chemical reaction, what bonds are broken and what bonds are formed?
IceJOKER [234]
Reactants bonds are broken and products bonds are formed
8 0
3 years ago
Why is it important to make observations about the reactants? ​
Free_Kalibri [48]

Answer:

Reason Down below

Explanation:

It is important because when you make observation you get a clue sometimes and it  reactants i feel like it also takes places with observation. :)

7 0
3 years ago
What is the abbreviation for the element with atomic number 11?
VikaD [51]

Answer:

Sodium (Na) has atomic number 11.

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3 years ago
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