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Natasha2012 [34]
3 years ago
9

Marni runs 1500 meters around the school track . What does she need to know in order to find out her speed?

Chemistry
1 answer:
lbvjy [14]3 years ago
3 0
I would also say the answer is A
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50

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what is the theoretical mass of xenon tetrafluoride that should form when 130.g of xenon is reacted with 100.g of F2? what is th
serg [7]

Answer:

The answer to your question is: 70.7 %

Explanation:

Equation

                  Xe   +   2F₂    ⇒    XeF₄

limiting reactant = Xe

Xe is the limiting reactant because the ratio is:

theoretical = 131/ 76 = 1.72 g

experimental ratio = 130/100 = 1.3  the amount of F increased.

                     131.3 g of Xe ------------------ 207 g of XeF₄

                     130 g of Xe  -------------------  x

                         x = (130 x 207) / 131.3

                        x = 205 g of XeF₄

% yield = 145 / 205 x 100

% yield = 70.7

5 0
3 years ago
choose a spot outside or inside your house as your reference point. it may be a trer ,bench,cabinet,refrigerator,pr sink.​
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I choose my table

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