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Fed [463]
2 years ago
7

Alex wants to find out if different amounts of water affect plant growth. She waters three bean plants with three different amou

nts of water. She measures each plant’s height daily. She places all three plants in the same window to get sunlight. She keeps the temperature in the room set at 72°F. Which option is the responding variable in this experiment?
A. the amount of sunlight

B. the temperature of the room

C. the height of the plants

D. the amount of water
Chemistry
1 answer:
rosijanka [135]2 years ago
3 0
The answer is C. The height of the plants.
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Which chemical family tends to get rid of electrons by forming a compound
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In ADEF, the measure of F=90°, the measure of ZD=10, and EF = 94 feet. Find the
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In the following reaction, if you wanted to produce more hydrochloric acid (HCl), what should you do? (2 points)
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Add more H2O

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2 years ago
One mole of a metallic oxide reacts with one mole of hydrogen to produce two moles of the pure metal
kenny6666 [7]

Answer:

Lithium oxide, Li₂O.  

Explanation:

Hello!  

In this case, according to the given amounts, it is possible to write down the chemical reaction as shown below:

M_2O+H_2\rightarrow 2M+H_2O  

Which means that the metallic oxide has the following formula: M₂O. Next, we can set up the following proportional factors according to the chemical reaction:

5.00gM_2O*\frac{1molM_2O}{(2*X+16)gM_2O}*\frac{2molM}{1molM_2O}*\frac{XgM}{1molM}=2.32gM  

Thus, we perform the operations in order to obtain:

\frac{10X}{(2X+16)}=2.32  

So we solve for x as shown below:

10X=2.32(2X+16)\\\\10X=4.64X+37.12\\\\X=\frac{37.12}{10-4.64}\\\\X= 6.93g/mol  

Whose molar mass corresponds to lithium, and therefore, the metallic oxide is lithium oxide, Li₂O.  

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8 0
2 years ago
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