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Soloha48 [4]
3 years ago
8

Liquid helium boils at –268.93 °C. What is the boiling point of helium on the Kelvin temperature scale?

Chemistry
2 answers:
____ [38]3 years ago
7 0

Answer:

-268.93+273=4.07K

Explanation: When solving for Kelvin you want to add 273 which is the constant to get your answer which should be 4.07K.

BARSIC [14]3 years ago
4 0

In order to change celcius to kelvin always add 73 to it leaving you with -195.93

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In the reaction N2 + 3H2 → 2NH3, what is the mole ratio of hydrogen to nitrogen?
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Answer: The mole ratio of hydrogen to nitrogen is 3 mole: 1 mole, 3:1

Explanation:

•Mole ratios are determined using the coefficients of the substances in the balanced chemical equation. •Each coefficient represents the number of mole of each substance in the chemical reaction.

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For this reaction the balanced chemical equation is

N2(g) + 3H2(g) ----> 2NH3(g)

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From the equation we can see that 1 mole of N2(g) reacts with 3 moles of H2(g) or 3 moles of H2(g) react with 1 mole of N2(g) to produce 2 moles of NH3(g).

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For example, diamond is a covalent network solid in which carbon atoms are arranged in a continuous lattice like structure.

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