Answer: the charge on each electron
Explanation:
every two moles of methanol will need three moles of oxygen gas and products 2 miles of carbon dioxide and 4 miles of water
Answer:
The number of molecules = 2.6408 molecules
Explanation:
To determine the number of molecules in water, we need to determine how many moles of water we have
Water has a molar mass of 18.015g/mol, this means that one mole of water molecules has a mass of 18.015g
To find the number of molecules,
7.9g * 1 mole H2O/ 18.015g
= 0.4385mole of H2O
Using avogadro number,
0.4385 H2O * 6.022* 10^23molecules/ 1 mole of H2O
That's 0.4385 H2O multipled by 6.022*10^ 23 molecules divided by 1 mole of H2O
Which gives == 2.6408 molecules
The molarity of a substance is the number of moles of the substance present per liter. We are given the mass per liter, which is 292 grams. We may convert this into moles by dividing by the molecular mass of magnesium nitrate. This is:
Mg + 2 * NO₃⁻
24 + 2 * (14 + 16*3)
Mr = 148 g/mol
The molarity of the solution is:
M = 292/148 = 1.97 moles / liter
The solution has a molarity of 1.97 M
Answer:
The speed of the given electromagnetic wave is 3 x 10⁸ m/s.
Explanation:
Electromagnetic wave is a type of energy that is commonly known as light energy. The speed of light in air is about 3 x 10⁸ meters per second (m/s).
<u>All electromagnetic waves travel at the same speed</u> which is equal to speed of light, approximately 3 x 10⁸ meters per second (m/s) through a vacuum or air.
Therefore, the speed of the given electromagnetic wave is 3 x 10⁸ m/s.
