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What was the name of the supercontinent that formed approxim…

What was the name of the supercontinent that formed approximately 1.1 billion years ago?  (billion, not million)

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Balance the following double displacement equation: Silver b…

Balance the following double displacement equation: Silver bromide  +   Galium phosphate  —->   ___  _______  +  ____ ________

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Give the formula aluminum phosphate   

Give the formula aluminum phosphate   

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An oxide of lead contains 90.65% Pb, by weight. The empirica…

An oxide of lead contains 90.65% Pb, by weight. The empirical formula is:

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Dmitri Mendeleev organized the chemical elements:

Dmitri Mendeleev organized the chemical elements:

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Convert 1.75 lb to grams _________________

Convert 1.75 lb to grams _________________

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According to the first law of thermodynamics: 

According to the first law of thermodynamics: 

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How many calories are in 854.3 J? (1 cal = 4.184 J)?

How many calories are in 854.3 J? (1 cal = 4.184 J)?

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What is the percent by mass of carbon in table sugar (sucros…

What is the percent by mass of carbon in table sugar (sucrose, C12H22O11)?  

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What does Bohr’s theory state?

What does Bohr’s theory state?

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