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My name is Ann [436]
3 years ago
8

What part of the atom is involved in chemical reactions?

Chemistry
1 answer:
Lesechka [4]3 years ago
7 0
Chemical reactions happen when two or more atoms go together to form molecules or when Atoms brake
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When water evaporates, what happens to the molecules that make up the liquid water?
Rama09 [41]

Answer:

Evaporation happens when a liquid substance becomes a gas. When water is heated, it evaporates. The molecules move and vibrate so quickly that they escape into the atmosphere as molecules of water vapor.

Explanation:

7 0
3 years ago
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What is the pH of 0.000134 M solution of HCI?
mafiozo [28]

Answer: The pH will be 3.87

Explanation:

pH or pOH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydrogen ion concentration.

pH=-\log [H^+]

HCl\rightarrow H^++Cl^{-}

According to stoichiometry,

1 mole of HCl gives 1 mole of H^+

Thus 0.000134 moles of HCl gives =\frac{1}{1}\times 0.000134=0.0001342 moles of H^+

Putting in the values:

pH=-\log[0.000134]

pH=3.87

Thus the pH will be 3.87

5 0
3 years ago
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Plz answer 3 ,4,5 thanks
ratelena [41]
For #3 the answer is B, for #4 the answer is F, and for #5 the answer is B.
5 0
3 years ago
An element that is likely to have this property is; A. bromine B. carbon C. sodium D. tellurium ?
vladimir2022 [97]
The answer is D. Most common semiconducting materials are crystalline solids. A<span>morphous and liquid semiconductors are also known to be.</span>
4 0
3 years ago
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Chemical weathering involves the breakdown of material due to ________. A. mechanical breakdown of rock B. baking in the hot sun
kykrilka [37]

Answer: 1) weathering is the process of something wearing away and breaking into smaller pieces, erosion is where things like water, wind, ice and gravity wear away rocks and soil and moves it from one location to another.

2) chemical weathering is when the rock changes a mineral and mechanical weathering is when it changes physically, like breaking into smaller pieces

3) when sheets of rocks peel away

Explanation:

8 0
3 years ago
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