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LenKa [72]
3 years ago
9

Which process is occurring at the center of all active stars? A) fusion B) fission C) flatulation D) hydrogen decay

Chemistry
1 answer:
dusya [7]3 years ago
8 0
The answer is A) fusion. Occurring at the center of all active stars including our sun, this nuclear reaction of combining two hydrogen atoms, and using an enormous amount of heat, forms a single more massive helium atom. This fusion of hydrogen atoms also produces the energy of the stars and creates the helium gases existing in the universe. 
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What is the average atomic mass of the following isotopic mixture - 42.10 g/mole- 93.50%; 48.30 g/mole 6.200%; 50.40 g/mole - 0.
bazaltina [42]

Answer:

40.03g/mole

Explanation:

Given parameters:

Mass =  42.10 g/mole and abundance  = 93.50%

Mass = 8.30 g/mole and abundance =  6.200%

Mass  = 50.40 g/mole and abundace  = 0.3000%

Find;

Average atomic mass = ?

Solution:

Average atomic mass = sum (mass x abundance)

 Average atomic mass = (\frac{93.50}{100}  x 42.1) + (\frac{6.2}{100} x 8.3) + (\frac{0.3}{100} x 50.4)

                                      = 39.36g/mole + 0.52g/mole + 0.15g/mole

                                      = 40.03g/mole

8 0
3 years ago
What is the name for the compound formed between nitrogen and magnesium. (show your work)
astra-53 [7]

Answer:

the compound formed between nitrogen and magnesium is Magnesium Nitride

7 0
2 years ago
A 50 L cylinder is filled with argon gas to a pressure of 10130.0 kPa at 300°C. How many moles of argon gas does the cylinder co
KengaRu [80]
In this problem, we need to use the ideal gas law. The following is the formula used in ideal gas law: PV = nRT, where n refers to the moles and R is the gas constant.

Given 
P = 10130.0 kPa 
V = 50 L
T = 300 degree celcius + 273.15 = 573.15 K
R = 8.314 L. kPa/K.mol

Solution
To get the moles which represent the "n" in the formula, we need to rearrange the equation.

PV = nRT                      PV
----    ------    --->    n = --------
 RT     RT                       RT

          10130.0 kPa  x 50 L
n= ---------------------------------------------
       8.314 L. kPa/K.mol  x 573.15 K
             506,500 
  =  ----------------------------
         4,765.17  mol K

=106.29 mol Ar

So the moles of argon gas is 106.29 moles 
8 0
3 years ago
Read 2 more answers
I really need your help best answer gets the brainiest! please answer its 50 POINTS!
dangina [55]

Answer:

add it all up

Explanation:

6 0
3 years ago
Which of the following best describes the forces that generate solar power
Sergeeva-Olga [200]
I believe the answer is A (it was on another Brainly question as well).
8 0
3 years ago
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