Answer:
Explanation:
First, lets find the molar mass of CO². This is approximately 12 + 2(16) = 44 g/mol. Now, let's set up the conversions.
This is Avogadro's number
↓
243.6g CO² * (1 mol CO² /44g CO²) * (6.023 * 10^23 molecules/ 1 mol)
When we cancel out the units, we are left with 3.33 * 10^23 molecules of carbon dioxide. I hope this makes sense!
Although it has a negative charge, it will never accept a
H
+
to form
H
2
S
O
4
(sulfuric acid) . That is because sulfuric acid is a strong acid and completely disassociates in water.
Therefore, the sulfate ion (
S
O
2
−
4
) is the conjugate base of
H
S
O
−
4
.
Answer:
Explanation:
To convert from moles to atoms, we must use Avogadro's Number.
This number tells us the number of particles (atoms, molecules, ions, etc.) in 1 mole. In this case, the particles are atoms of calcium (Ca).
1. Convert from moles to atoms.
Write Avogadro's number as a fraction.
Multiply the given number of moles of calcium (3.8) by the fraction created.
The moles of calcium will cancel.
The denominator of 1 is insignifcant and we can turn this into a simple multiplication problem.
2. Round
The problem tells us to round to 2 decimal places or the hundredth place.
The 8 in the thousandth place tells us to round the 8 to a 9.
There are about <u>2.29*10²⁴ atoms of calcium</u> in 3.8 moles.
This awnser is very super duper true