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balandron [24]
3 years ago
14

Nuclear reactions occurring in the Sun _____. Select all that apply. generate light, generate heat, absorb a lot of energy, or f

use atoms of hydrogen to make helium atoms
Chemistry
2 answers:
Gennadij [26K]3 years ago
8 0

Answer:

The answers are generate light, generate heat, fuse atoms of hydrogen to make helium atoms. That other answer over there didn't select all that apply, because they have a dumb stinky brain.

Explanation:

The main source of heat on earth is the sun. The sun is made mostly of hydrogen and helium. Nuclear reactions within the sun change hydrogen atoms into helium atoms. This process releases a tremendous amount of energy in the form of heat and light.

ohaa [14]3 years ago
3 0
In the sun nuclear reaction called proton-proton cycle occurs. During these processes four hydrogen atoms are combined in a series of reactions to form one Helium atom; this chain of reactions is coupled by release of energy in the form of gamma rays and other particles called neutrons. Therefore, i believe the appropriate answer would be, nuclear reaction fuse atoms of hydrogen to make helium atoms.
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5 0
3 years ago
What masses of KCl and H2O are needed to make 250 g of 5.00 % solution?
oksano4ka [1.4K]

Answer:

w/w means weight/weight

Therefore, in a 250 g of solution, 5% needs to be KCl,  

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7 0
3 years ago
The velocity of a car is 66km/h. How fast will travel in 3 hours
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4 0
2 years ago
A chemist has one solution that is 20% salt and a second solution that is 45% salt. How many liters of each should be used in or
Free_Kalibri [48]

Answer:

8 liters of the first salt solution and 12 liters of the second salt solution is needed to get 20L of a solution that is 30% salt

Explanation:

Let x represent the liters of the first salt solution

Let y represent the liters of the second salt solution

x + y= 20......equation 1

x= 20-y

The first solution is 20% salt and the second solution is 45% salt

20/100x + 45/100 y= 30/100 × 20

0.2x + 0.45y= 0.3×20

0.2x + 0.45y= 6............equation 2

Substitute 20-y for x in equation 2

0.2(20-y) + 0.45y= 6

4-0.2y+ 0.45y= 6

4 + 0.25y= 6

0.25y= 6-4

0.25y= 2

y= 2/0.25

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Substitute y for 8 in equation 1

x + y= 20

x + 8=20

x= 20-8

x= 12

Hence 8 liters of the first salt solution and 12 liters of the second salt solution is needed to get 20L of a solution that is 30% salt.

4 0
3 years ago
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