Your answer is, an acid
<u>Acid</u>
An acid is a substance that donates hydrogen ions. Because of this, when an acid is dissolved in water, the balance between hydrogen ions and hydroxide ions is shifted. Now there are more hydrogen ions than hydroxide ions in the solution.
<u>Acid Rain</u>
Acid rain is rain or any other form of precipitation that is unusually acidic, meaning that it has elevated levels of hydrogen ions. Most water, including drinking water, has a neutral pH that exists between 6.5-8.5, but acid rain has a pH level lower than this and ranges from 4-5 on average.
<u>Examples of Acids</u>
Thus, <u>an acid</u> is your answer.
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A. 2.9384 x -7
B. 9.0832 x 9
C. 3.4455 x -3
D. 2 x 3
Answer:
1 mol of copper
Explanation:
The mass of the oxide formed is the total mass less the crucible mass, so it is:
100.52 - 88.00 = 12.52 g
It means that 10.00 g is from copper, and 2.52 g is from oxygen. The molar mass of copper is 63.50 g/mol, and the molar mass of oxygen is 16 g/mol. The number of moles (n) is the mass divided by the molar mass:
n Cu = 10.00/63.50 = 0.158 moles
n O = 2.52/16 = 0.158 moles
So, there is the same number of moles of each element, and the product must be: CuO, which has 1 mol of copper.
Answer:
The answer to your question is: Boron
Explanation:
Helium has 2 electrons in the first energy level and does not have any electron in the second energy level.
<u>Boron </u><u>it has 2 electrons in the first energy level and three electrons in the second energy level.</u>
Beryllium has 2 electrons in the first energy level and 2 electrons in the seond energy level.
Carbon has 2 electrons in the first energy level and 4 electrons in the third energy level.