Answer :
Easy moles to mass conversion :)
So, the first step would be our "given" over 1. Our given, is 0.427.
So, our first step would look like this:
0.427 mol He
-------------------
1
For our second step, we need to cancel out moles. So, we would put one mole on the bottom of our second step, to cancel out. Whenever we use the periodic table to find molar mass in a conversion, it is ALWAYS one mole. To find grams, we will simply calculate the molar mass of helium, which is 4.003 (atomic mass on the periodic table)
Our second step would look like this:
4.003g He
---------------
1mol He
So, when we put the two steps together, it looks like this:
0.427mol He 4.003g He
-----------------x ---------------
1 1mol He
To find our answer, we:
Multiply the top numbers together (we get 1.709281)
Multiply the bottom numbers together (we get 1)
Then, we divide the top product together by the bottom product together.
1.709281/1
Our answer is 1.709281
So, from 0.427 moles of Helium, we get 1.709281 grams of Helium.
So, the first step would be our "given" over 1. Our given, is 0.427.
So, our first step would look like this:
0.427 mol He
-------------------
1
For our second step, we need to cancel out moles. So, we would put one mole on the bottom of our second step, to cancel out. Whenever we use the periodic table to find molar mass in a conversion, it is ALWAYS one mole. To find grams, we will simply calculate the molar mass of helium, which is 4.003 (atomic mass on the periodic table)
Our second step would look like this:
4.003g He
---------------
1mol He
So, when we put the two steps together, it looks like this:
0.427mol He 4.003g He
-----------------x ---------------
1 1mol He
To find our answer, we:
Multiply the top numbers together (we get 1.709281)
Multiply the bottom numbers together (we get 1)
Then, we divide the top product together by the bottom product together.
1.709281/1
Our answer is 1.709281
So, from 0.427 moles of Helium, we get 1.709281 grams of Helium.
The mass of a helium sample that contains 0.427 moles of He gas is 1.709 grams.
What is helium?
Helium is an element whose atomic number is 2 and symbol is He.
It is a colorless, odorless, nontoxic gas.
The moles of He is 0.427
To find mass
Now, the molar mass of Helium is 4.003g
we will multiply the molar mass to the moles of helium
[tex]\rm \dfrac{0.427\;mol He\times4.003g He}{ 1 \times 1\;mol\ He} =1.709\;g[/tex]
Thus, 1.709 grams of helium sample will contains 0.427 moles of He gas.
Learn more about Helium, here:
https://brainly.com/question/4945478