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marusya05 [52]
3 years ago
6

Is water a solid, liquid, or gas at 245 kelvin

Chemistry
2 answers:
Korvikt [17]3 years ago
3 0
The answer is water is a liquid
Bumek [7]3 years ago
3 0

Answer: solid

Explanation: T(Kelvin) = 273 + °C

T =245K

245 = 273 + °C

°C = 245 — 273

°C = —28°C

The temperature of the water is —28°C. It means that the water is ice(solid)

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In a water molecule, what type of bond forms between the oxygen and hydrogen atoms
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A chemist weighed out 19.9 g of aluminum. Calculate the number of moles of aluminum she weighed out.
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Determine the number of molecules in 43.9 g of carbon tetrachloride
ddd [48]

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2 years ago
Which element above has 8 protons in its nucleus?
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Read 2 more answers
The half life of oxygen is 2 minutes. What fraction of a sample of 0.15 will remain after 5 half lives?​
Natasha_Volkova [10]

Answer:

3.13%.

Explanation:

The following data were obtained from the question:

Original amount (N₀) = 0.15

Half life (t½) = 2 mins

Number of half-life (n) = 5

Fraction of sample remaining =.?

Next, we shall determine the amount remaining (N) after 5 half-life. This can be obtained as follow:

Amount remaining (N) = 1/2ⁿ × original amount (N₀)

NOTE: n is the number of half-life.

N = 1/2ⁿ × N₀

N = 1/2⁵ × 0.15

N = 1/32 × 0.15

N = 0.15/32

N = 4.69×10¯³

Therefore, 4.69×10¯³ is remaining after 5 half-life.

Finally, we shall the fraction of the sample remaining after 5 half-life as follow:

Original amount (N₀) = 0.15

Amount remaining (N) = 4.69×10¯³

Fraction remaining = N/N₀ × 100

Fraction remaining = 4.69×10¯³/0.15 × 100

Fraction remaining = 3.13%

3 0
3 years ago
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