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Mekhanik [1.2K]
3 years ago
13

Why do scientists use STP? options: A. STP has no negative numbers which makes calculations easier. B. Because temperature and p

ressure affect gases, scientists want to "standardize" the conditions at which gases are studied. C.Using 500 K and 500 kPa for standard temperature and pressure, conditions are kept constant. D. STP is used so that the Celsius temperature can be used in gas law calculations
Chemistry
1 answer:
alexdok [17]3 years ago
6 0

Answer: B

Explanation: It makes the most sense to me as the way temperature is measured, is with 0 degrees Celsius as the standard and 1 atm for pressure, if I am incorrect for any reason, please let me know

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jarptica [38.1K]

Answer:

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Explanation:

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astraxan [27]
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Calculate the ph of a 0.005 m solution of potassium oxide k2o
Alecsey [184]
First, we have to see how K2O behaves when it is dissolved in water:

K2O + H20 = 2 KOH

According to reaction K2O has base properties, so it forms a hydroxide in water.
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c(KOH) : c(K2O) = 1 : 2

So,

c(KOH)= 2 x c(K2O)= 2 x 0.005 = 0.01 M = c(OH⁻)

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pOH= -log c(OH⁻) = -log 0.01 = 2

pH= 14-2 = 12




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3 years ago
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erastovalidia [21]
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6 0
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Answer:

Explanation:

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