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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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How could the appearance of a substance change with out it becoming a different substance
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3 0
4 years ago
Answer the following questions…
Zina [86]

The concentration of the hydronium ion in hydrochloric acid is 0.0045 M, and the pH of the solution is 2.34.

<h3>What is pH?</h3>

pH is the potential of the hydrogen or the hydronium ions in the aqueous solution.

As the solution contains 4.5 \times 10^{-3} \;\rm  M\; HCl the concentration of the hydronium ion will be the same, 4.5 \times 10^{-3} \;\rm  M.

The pH of the solution is calculated as:

\begin{aligned} \rm pH &= \rm -log[H^{+}]\\\\&= - \rm log (4.5 \times 10^{-3})\\\\&= 2.34\end{aligned}

The concentration of the hydroxide ion is calculated from pH and hydronium ion as:

\begin{aligned} \rm [H_{3}O^{+}][OH^{-}] &= 10^{-14}\\\\&= \dfrac{1 \times 10^{-14}}{4.5 \times 10^{-3}}\\\\&= 2.2 \times 10^{12}\end{aligned}

Now, for the calcium hydroxide solution, the calculations are shown as,

\begin{aligned} \rm (H_3}\rm O^{+}) &= \rm antilog (-pH)\\\\&= \rm antilog (-8)\\\\&= 10^{-8} \;\rm M\end{aligned}

pOH is calculated as:

\begin{aligned} \rm pOH &= 14- 8 = 6\\\\\rm [OH^{-}] &=  \rm antilog (-6)\\\\&= 10^{-6} \end{aligned}

The concentration of calcium hydroxide is calculated as:

\begin{aligned} &= \dfrac{1}{2} \times \rm [OH^{-}]\\\\&= 5 \times 10^{-4} \;\rm M\end{aligned}

Therefore, the pH and the pOH give the concentration of the hydrogen or the hydronium ion and the hydroxide ion.

Learn more about pH and pOH here:

brainly.com/question/16062632

#SPJ1

3 0
2 years ago
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