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Anon25 [30]
3 years ago
7

_____ was Isaac Newton’s first contribution to the scientific community.

Chemistry
2 answers:
DENIUS [597]3 years ago
7 0
A I think is the answer
Valentin [98]3 years ago
5 0

Answer:

Principia

Explanation:

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3 years ago
You have 4 moles of oxygen gas in a flask. 4 moles of helium gas is added. What happens to the total pressure of the gases in th
ASHA 777 [7]

Answer: The correct option is (c). The total pressure doubles.

Solution:

Initially,  only 4 moles of oxygen gas were present in the flask.

p_{O_2}=Tp_1\times X_{O_2}  (X_{O_2}=\frac{4}{4}) ( according to Dalton's law of partial pressure)

p_{O_2}=Tp_1\times 1=Tp_1....(1)

Tp_1= Total pressure when only oxygen gas was present.

Final total pressure when 4 moles of helium gas were added:

X'_{O_2}=\frac{4}{8}=\farc{1}{2},X_{He}=\frac{4}{8}=\frac{1}{2}

partial pressure of oxygen in the mixture :

Since, the number of moles of oxygen remains the same, the partial pressure of oxygen will also remain the same in the mixture.

p_{O_2}=Tp_2\times X'_{O_2}=Tp_2\times \frac{1}{2}

Tp_2= Total pressure of the mixture.

from (1)

Tp_1=Tp_2\times X'_{O_2}=Tp_2\times \frac{1}{2}

On rearranging, we get:

Tp_2=2\times Tp_1

The new total pressure will be twice of initial total pressure.

7 0
3 years ago
What is the difference between a ribonucleotide and a deoxyribonucleotide?
Bumek [7]

Answer:

The answer to your question is: letter A

Explanation:

a. Ribonucleotides have a hydroxyl group on the 2 carbons of their sugar sub-unit.  This is the main difference between Ribonucleotides and deoxyribonucleotides, the first have hydroxyl group in carbon number two, while the second have a hydrogen.

b. Ribonucleotides contain a phosphate group.

c. Ribonucleotides have a hydrogen atom on the 1 carbon of their sugar sub-unit.

d. Ribonucleotides contain a sugar with five carbon atoms.

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4 years ago
HELP ASAP PLS! How many grams are present in 0.0567 mol C2H6 ?
julia-pushkina [17]
Mass of substance in grams 60.1
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3 years ago
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