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Nat2105 [25]
2 years ago
7

10. Which of the following consists of two or more pure substances?

Chemistry
1 answer:
Hunter-Best [27]2 years ago
8 0
I am 100% sure it’s oxygen
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3 years ago
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How is the scientific definition of "heat" different from how we use it every day? PLEASE NEED THE ANSWER ASAP
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3 0
3 years ago
This is my chemistry worksheet. It's a new topic my teacher will barely review with us. Help please???
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So to balance an equation, you need to get the same amount of each type of element on either side of the --> . So you pretty much are given the subscripts in the equations and you need to add coefficients (just normal numbers) in front of any formula that needs it, keeping anything balance.
KCl_{3}  + O_{2}  -\ \textgreater \  KCl_{3}
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These coefficient numbers are the molar ratios, so 2 moles of KCl3 for every 3 moles of O2   so 1. 3:2

Then you can use these ratios of find out how many moles of one thing are needed if you are given the amount of another.
\frac{moles of element 1}{cofficient 1}  =  \frac{moles of element 2}{cofficient 2}
and use cross multiplication to solve for whatever you don't know


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3 years ago
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