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s344n2d4d5 [400]
4 years ago
12

Compare the density of the he atom with that of pure water, which is 1.0 g/cm3.

Chemistry
1 answer:
makkiz [27]4 years ago
3 0
At room temperature, water is liquid in form. For helium, it is gas because it is the second lightest element in nature. So, you would expect the density of Helium to be much less than 1 g/cm³. Because gas is very light and occupies a lot of space, the density would result to a very small number.
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A 125g sample of a mixture of salt and sand contains 12% salt.
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12 % salt is present in 125 g mixture of salt and sand.
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sand.
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adelina 88 [10]

Answer:

See explanation

Explanation:

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4 0
3 years ago
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Marina86 [1]
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6 0
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How many grams of water are produced when oxygen reacts with an excessive amount of propane (C3H8)?
lora16 [44]

Answer:

From the equation you will see that 1 mol of propane generates 4 mols of water.

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Explanation:

Since the molar mass of water  

M ( H2O)=2×1+16=18g/mol

2 mol propane will generate  

2 ×4×18=144g   of water

5 0
3 years ago
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