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Sophie [7]
3 years ago
6

4. This is the idea that energy can be transformed from one form to another, but it

Chemistry
1 answer:
nordsb [41]3 years ago
6 0

Answer:

Law of Conservation of Energy

Explanation:

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Coefficients are used in a chemical formula to show the number of each element. True or False
ANTONII [103]

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The same number of each element present before the reaction takes place must also be present on the product side of the equation. Coefficients are placed in front of a chemical formula to show the number of moles of that substances that are necessary for the reaction to occur.

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3 years ago
How many grams of H2O are needed to produce 150 g of Mg(OH)2? (Molar mass: H2O = 18.02 g/mol; Mg(OH)2 = 58.33 g/mol )
Nuetrik [128]

Answer:

92.6

Explanation:

6 mol x 18.02 g of H2o --> 3 mol x 58.33 g  Mg(OH)2

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g of H2O is 150 g of Mg(OH)2

150g x 108.12g / 174.99 =

92.67

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