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natulia [17]
4 years ago
11

The density of pure water is 1.0 g/ml. Four students measured and calculated the density of pure water samples. The results are

as follows: student 1 got 0.85
g/ml, student 2 got 0.94 g/ml, student 3 got 0.95 g/ml, and student 4 got 1.3 g/ml. Which student had the smallest error in their measurement?

A. Student 3
B. Student 2
C. Student 4
D. Student 1
Chemistry
1 answer:
balandron [24]4 years ago
5 0

Answer:

Student 4

Explanation:

Student 1: 15

student 2 : 6

Student 3: 5

Student 4: 3

P.S: Just guessed

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In the combined gas law, if the volume is decreased, what happens to the temperature if pressure remains constant?
Flura [38]

The correct answer is A. In the combined gas law, if the volume is decreased and the pressure is constant, then the temperature decreases.

 <span>P1V1/ T1 = P2V2 / T2</span>

 <span>Assume the volume decrease by half; V2 = V1/2</span>

 <span>P1V1/ T1 = P2V1 /2 T2</span>

 <span>Cancelling terms,</span>

 <span>1/T1 = 1/2 T2</span>

T2 = T1/2

 <span>Thus, the temperature decreased.</span>

8 0
4 years ago
assuming nitrogen behaves like an ideal gas, what volume would 14.0 g of nitrogen gas (N2) occupy at STP? the gas constant is 0.
dimaraw [331]

Answer:

V = 22.41 L

Explanation:

Given data:

Mass of nitrogen = 14.0 g

Volume of gas at STP = ?

Gas constant = 0.0821 atm.L/mol.K

Solution:

Number of moles of gas:

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Number of moles = 1 mol

Volume of gas:

PV = nRT

1 atm × V = 1 mol × 0.0821 atm.L/mol.K  × 273 K

V = 22.41 atm.L / 1 atm

V = 22.41 L

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I think the answer would be b, sorry if I'm wrong(EDIT: ITS ACTUALLY AAAAA)

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How many protons, neutrons, and electrons are there in one atom of 'H ?
kolezko [41]

Answer:

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Explanation:

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