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Much of the general structure and physical properties of the interior of the earth are inferred from: a)deep oil and gas bore holes b)geologic investigations c)analysis of seismic waves d) study of volcanoes
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Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture
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The minerals found in bones are deposited by living cells called
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Chemistry, 22.06.2019 11:30
Determine the reaction and balance the following equations urgent due in the morning
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Which is an example of a solution? a. sand b. salad c. carbon d. seawater...
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