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2 years ago

For Carbon - 14, the top number will be . The bottom number will be .

Chemistry

1 answer:

Semenov [28]2 years ago

7 0

16 and 6

Explanation:

the top number will be 16 and the bottom number will be 6

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Helium gas in a cylinder is under 1.12atm pressure at 25.0C. What will be the pressure if the temperature increases to 37.0C?

Irina18 [472]

Answer:

$p_2=1.17atm$

Explanation:

Hello!

In this case, considering that the Gay-Lussac's law allows us to relate the temperature-pressure problems as directly proportional relationships:

$\frac{p_2}{T_2} =\frac{p_1}{T_1} \\\\$

Thus, for the initial pressure and temperature in kelvins the final temperature in kelvins, we compute the final pressure as:

$p_2=\frac{p_1T_2}{T_1} \\\\p_2=\frac{1.12atm*310.15K}{298.15K}\\\\p_2=1.17atm$

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3 years ago

An unstable nucleus which starts a decay process is called the _____.

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It Is Called The Parent Nuclide

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3 years ago

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joja [24]

Answer:

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3 years ago

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During the water cycle, water is evaporated from the Earth and becomes water vapor. Water vapor then condenses in the air to

Kobotan [32]

No water is lost because matter cannot be created nor destroyed

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3 years ago

A city's water supply is contaminated with a toxin at a concentration of 0.63 mg/L. For the water to be safe for drinking, the c

Shalnov [3]

Answer:

Approximately 22.37 days, will it take for the water to be safe to drink.

Explanation:

Using integrated rate law for first order kinetics as:

$[A_t]=[A_0]e^{-kt}$

Where,

$[A_t]$ is the concentration at time t

$[A_0]$ is the initial concentration

k is rate constant

Given that:- k = 0.27 (day)⁻¹

$[A_0]$ = 0.63 mg/L

$[A_t]=1.5\times 10^{-3}$ mg/L

Applying in the above equation as:-

$1.5\times 10^{-3}=0.63e^{-0.27\times t}$

$63e^{-0.27t}=150\times \:10^{-3}$

$e^{-0.27t}=\frac{1}{420}$

$t=\frac{100\ln \left(420\right)}{27}=22.37$

<u>Approximately 22.37 days, will it take for the water to be safe to drink.</u>

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3 years ago

For Carbon - 14, the top number will be ____. The bottom number will be ____.

For Carbon - 14, the top number will be . The bottom number will be .