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pantera1 [17]
4 years ago
8

Gas samples A, B, and C are contained in a system at STP. The partial pressure of sample A is 38.0 kPa and the partial pressure

of sample B is 19.0 kPa. What is the partial pressure of sample C?
Chemistry
1 answer:
MrMuchimi4 years ago
6 0

The total pressure is given by

P_{T} = P_A + P_B + P_C

A system a STP will have a total pressure of 101.325KPa, and so we make P_C the subject of the formula and solve

P_C= P_T-(P_A+P_B)= 101.33-(38+19)= 101.33-57= 44.3kPa

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hodyreva [135]

Answer:

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3 years ago
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a 50.0 mL sample of KCl requires 22.40 mL of 0.0229 M Pb(NO3)2 in order to completely titrate it. What is the Molarity of the KC
garik1379 [7]

Answer:

0.02052M

Explanation:

First, we need to write a balanced equation for the reaction. This is illustrated below:

2KCl + Pb(NO3)2 → 2KNO3 + PbCl2

The following were obtained from the question:

Molarity of Pb(NO3)2 = 0.0229M

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Number of mole of Pb(NO3)2 =?

Recall:

Mole = Molarity x Volume

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From the equation,

1mole of Pb(NO3)2 required 2moles KCl.

Therefore, 5.13x10^-4mole of Pb(NO3)2 will require = 5.13x10^-4x2 = 1.026x10^-3mole of KCl.

Now we can use this amount (i.e 1.026x10^-3mole) to find the molarity of KCl. This is illustrated below:

Mole of KCl = 1.026x10^-3mole

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8 0
4 years ago
Which particle has a mass of 9.11 x 10^-28g and charge of -1?
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QUESTION:- Which particle has a mass of 9.11 x 10^-28g and charge of -1?

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THERE IS NO CHARGE ON NEUTRON AND HAS MASS ALMOST EQUAL TO THE PROTON SO IT ALSO CANNOT BE URE ANSWER

MASS OF THE ELECTRON:- 9.11 \times 10^{ - 28}

CHARGE ON ELECTRON:- -1

SO URE ANSWER IS ELECTRON

3 0
3 years ago
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yaroslaw [1]

Answer:

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Answer:

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