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Oxana [17]
2 years ago
10

PLEASE HELP ME ITS DUE IN 25 MINUTES True or false iron and nickel are less dense than silicates ?

Chemistry
2 answers:
Pani-rosa [81]2 years ago
6 0
False, iron and nickel is apart of the core in the earth. meaning it’s more dense that silicates.
just olya [345]2 years ago
5 0
The answer is false
Iron and nickel is more dense
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3 years ago
A chemical reaction can theoretically produce 137.5 grams of product, but in actuality 112.9 grams are
Butoxors [25]
<h3>Answer:</h3>

82.11%

<h3>Explanation:</h3>

We are given;

  • Theoretical mass of the product is 137.5 g
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We are supposed to calculate the percentage yield

  • We need to know how percentage yield is calculated;
  • To calculate the percentage yield we get the ratio of the actual mass to theoretical mass and express it as a percentage.

Thus;

% yield = (Actual mass ÷ Experimental mass) × 100%

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3 years ago
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3 years ago
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2.Chromatography works because of differences in the properties of molecules in materials.some molecules differ in shape and size. These differences in molecular properties allow scientists to separate compounds into individual molecules using chromatography.

Explanation:

hope this helps

5 0
2 years ago
Read 2 more answers
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