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Dominik [7]
3 years ago
9

Calculate the mass of one atom of helium.​

Chemistry
1 answer:
mixer [17]3 years ago
8 0

Answer:

One atom lf helium has a mass of 4 u

Know that 1 u =1.66. 10-24g

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3 years ago
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Please help, I really don’t understand this!!!
kap26 [50]

<u>Analysing the Question:</u>

We are given the balanced equation:

C₆H₁₂O₆ + 6O₂→ 6CO₂ + 6H₂O

from this equation, we can say that: <em>for every 1 mole of Glucose, we need 6 moles of Oxygen</em>

<u>Moles of Glucose used in the reaction:</u>

Molar mass of Glucose = 180 grams / mol

Given mass of Glucose = 1 gram

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5 0
3 years ago
How many moles are found in a 100.0-g sample of CuF2?
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To determine the amount of a substance in units of moles from units of grams, we need to determine the molar mass of the substance. <span>The </span>molar mass<span> is the </span>mass<span> of a given chemical element or chemical compound (g) divided by the amount of substance (mol). For CuF2, the molar mass </span><span>101.543 g/mol. We calculate as follows:

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