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Free_Kalibri [48]
2 years ago
11

Brainliest to right answer

Chemistry
1 answer:
Basile [38]2 years ago
3 0
From outside in:
Crust
Upper mantle
Lower mantle
Outer core
Inner core.
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A compound contains 25.93% N and the rest is oxygen. What is the empirical formula for the compound?
Mnenie [13.5K]

Answer: NO2

Explanation:

                                  N                                O

Divide each by its    25.93                       74.07

mass number              14                             16

                                     2                              4

Divide both by the       2                               2

smaller (i.e. 2)               1                                2

Therefore, the empirical formula = NO2

                                     

5 0
3 years ago
find the activity coefficient of h , in a solution containing 0.010 m hcl plus 0.040 kclo4. what is the ph of the solution?
Lisa [10]

The activity coefficient of h is 0.05

The ph of the solution is 2.08

To find the activity coefficient, apply the concept of ionic equilibrium

h( activity coefficient)= 1/2CZ²

C is the concentration of species

Z is the charge on individual species

<em>h= 1/2( 0.01 x1²+ 0.04x (-1)²+0.01 x1²+0.04x (-1)²)</em>

<em>h= 0.05 </em>

For the pH of the solution, apply the formula

<em>pH= -log( H⁺x0.83)</em>

<em>pH = - log(0.01x0.83)</em>

<em>= 2.08</em>

To learn more about the pH of the solution, visit brainly.com/question/26767292

#SPJ4

4 0
1 year ago
Which of the following is one of the energy conversions taking place in a campfire? Heat to light Heat to kinetic Chemical to li
Blizzard [7]

Answer:Heat to Light

Explanation:

8 0
3 years ago
Read 2 more answers
Find the measure of the numbered angle. m∠2= _
mestny [16]
Angle 2 is 130 degrees
4 0
2 years ago
For the reaction COCl2(g)⇌CO(g)+Cl2(g), K= 2.19×10−10 at 373 K
vladimir1956 [14]

Answer:

D) The equilibrium lies far to the left

Explanation:

According to the law of mass action, the equilibrium constant K for the reaction at 373K can be calculated as follows:

K = \frac{[CO][Cl_{2}]}{[COCl_{2}]} = 2.19×10^{-10}

([X] means = concentration of X)

This means that in the equilibrium the concentration of the reactant (that is in the denominator) will be much higher (around 10^{10} fold) than the concentrations of the products (that are in the numerator), and this means that the equilibrium lies far to the left (to the reactants side) as very small amount of product is being formed.

6 0
3 years ago
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