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Dominik [7]
3 years ago
11

Which layer of the earth is the coolest in temperature?

Chemistry
1 answer:
PilotLPTM [1.2K]3 years ago
5 0

Answer:

B) Crust

Explanation:

It's the farthest layer from the core listed.

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Which is the main source of dissolved oxegyn in the ocean
kolezko [41]

Answer:phytoplankton

Explanation:

6 0
3 years ago
The appropriate concentration for an iodine sanitizer is _________
beks73 [17]
I don't really know
8 0
3 years ago
2NO (g) + O2 (g) →2NO2 (g) At equilibrium [NO] = 2.4 × 10 -3 M, [O2] = 1.4 × 10 -4 M, and [NO2] = 0.95 M.
azamat

Answer:

K=1.12x10^9

Explanation:

Hello there!

Unfortunately, the question is not given in the question; however, it is possible for us to compute the equilibrium constant as the problem is providing the concentrations at equilibrium. Thus, we first set up the equilibrium expression as products/reactants:

K=\frac{[NO_2]^2}{[NO]^2[O_2]}

Then, we plug in the concentrations at equilibrium to obtain the equilibrium constant as follows:

K=\frac{(0.95)^2}{(0.0024)^2(0.00014)}\\\\K=1.12x10^9

In addition, we can infer this is a reaction that predominantly tends to the product (NO2) as K>>>>1.

Best regards!

4 0
3 years ago
Unlike the nervous system, the endocrine system ___ A) Responds quickly B) Does not respond C) Rarely responds D) Responds Slowl
valentina_108 [34]
D) Responds slowly 


Good luck. It responds slower them the nervous system 
3 0
4 years ago
Only 235u can be used as fuel in a nuclear reactor, so uranium for use in the nuclear industry must be enriched in this isotope.
Yuki888 [10]

There are two isotopes of uranium abundant in nature

U235 and U238

As given that the sample has average molar mass of 237.482 amu

Let the amount of U235 in 100g sample = x

the amount of U238 in 100 g sample = 100-x

the average molar mass = [235(x) + 238 (100-x)] / 100

237.482  =  [235(x) + 238 (100-x)] / 100

237.482  X 100 =  [235(x) + 238 (100-x)]

23748.2 = 235 x + 23800 - 238x

51.8 = 3x

x = 17.27 g

So percentage of U-235 = 17.27 %


3 0
3 years ago
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