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Anettt [7]
3 years ago
8

When roasting marshmallows, is the marshmallow the system or the surrounding

Chemistry
2 answers:
Karolina [17]3 years ago
7 0
The marshmallow would be the system
Olenka [21]3 years ago
7 0
The marshmallow should be the system
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6 0
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How many moles are found in a 100.0-g sample of CuF2?
ivolga24 [154]
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:

100.0 g CuF2 ( 1 mol / 101.543 g) = 0.98 mol CuF2</span>
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3 years ago
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