Answer:
The molar mass of water is 18 grams per mole. So in 18 grams of water, there are 6.02 x 1023 molecules.
One gallon of water is equal to 3.7854118 liters. If we assume that the water is at 4 °C (to keep things simple), the density of water is exactly 1 gram per milliliter, or 1 kilogram per liter. So 1 gallon of water at 4 °C weighs exactly 3.7854118 kilograms, or 3785.41118 grams.
If one mole of water weighs 18 grams, then there are 210.30 moles of water in a gallon. Since one mole of water is made up of 6.02 x 1023 molecules, in one gallon of water there are 1.266 x 1026 molecules.
That is: 126600000000000000000000000 molecules!
If we multiply that by the number of atoms in a single water molecule -- 3 atoms -- then we get:
379800000000000000000000000 atoms!
<span>What is the maximum number of electrons in the following energy level? n = 2
2
</span>
Answer:
Explanation:There are no results for balance the following equation:ni(cio), →nici,+0when the equation is properly balanced, the correctcoefficients are, respectively
Answer:
the molar mass is 40 and the metal is Calcium
Explanation:
X + H2SO4=X2SO4 + H2
The mole ratio is 1:1
no of mole of H2SO4= conc(M) × Vol(L)
=0.1×0.5
=0.05 mol
from the balanced chemical equation of the reaction
no of mole of 'X' = no of mole of H2SO4
thus no of mole of X=0.05 mol
Also, no of mole=mass/molar mass
molar mass of 'X'=mol/mass
=2/0.05
=40
we need the three measurements to be able to asses significant figures.