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Schach [20]
4 years ago
9

Q3 what is the answer please help!!!

Chemistry
1 answer:
Lynna [10]4 years ago
3 0

Answer:

the light energy is transferred into the water

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Consider the following reaction of calcium hydride (CaH2) with molten sodium metal: CaH2(s) + 2 Na(l) -> 2 NaH(s) + Ca(l) Ide
vodka [1.7K]

Answer:

This is not a redox reaction. None of the species are reduced and none are oxidized

Explanation:

In a redox reaction at least one species must be oxidized and another reduced. You see this by a change in oxidation number. In this question the oxidation numbers are the same before and after the reaction.

Ca  2

H  -1

Na +1

I -1

4 0
4 years ago
Which graph is an exponential growth model?<br> A<br> B<br> C
gtnhenbr [62]
A the first one represents an exponential growth chart
5 0
3 years ago
A 0.21 m3 drum contains 100L of a mixture ofseveral degreasing solvents in water.The concentraton oftrichloroethylen in the head
LiRa [457]

Answer:

The concentration is 6.42×10^-4 M

Explanation:

Number of moles trichloroethylene = pressure × volume/Henry's constant = 0.00301×0.21/0.00985 = 0.0642 mol

Volume of mixture = 100 L

Concentration of trichloroethylene = number of moles of trichloroethylene/volume of solution = 0.0642/100 = 6.42×10^-4 M

5 0
4 years ago
What is the transfer of energy in the form of rays or waves
Drupady [299]

Answer:

Radiation

Explanation:

Radiation is the transfer of energy in waves. Heat from a campfire is one example.

Hope this is helpful! Have a good day!

6 0
3 years ago
What part of you are necessary to live?what could you live without
liubo4ka [24]
Your heart is something you simply cannot live without. Your wisdom teeth is something that you can live without. 
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4 years ago
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