Answer:
![\fbox {2 moles}](https://tex.z-dn.net/?f=%5Cfbox%20%7B2%20moles%7D)
Explanation:
<u>Relation between grams of Carbon and moles</u> :
![\fbox {12 g Carbon = 1 mole}](https://tex.z-dn.net/?f=%5Cfbox%20%7B12%20g%20Carbon%20%3D%201%20mole%7D)
<u>Multiply both sides by 2</u> :
⇒ 1 x 2 moles = 12 x 2 g
⇒ 2 moles = 24 g
Answer:
v2=5.11L
Explanation:
given
v1=2.58L
N1=0.118mol
N2=0.234
v2=x
according to charles law V1/N1=V2/N2
2.58/0.118=V2/0.234
21.86=V2/0.234
21.86×0.234= v2
5.116L=v2
<span>X: Geothermal energy
Y: Nonrenewable
So the answer is A</span>
Answer:
18.82 mg
Explanation:
From the given information:
The molar mass of CO2 is calculated as follow
= (12 + (16 ×2))
= 44
The mass of carbon is determined by dividing the mass no of carbon from co2 by the molar mass of CO2, followed by multiplying it by 69.00 mg
= ![(\dfrac{12}{44}\times 69 )](https://tex.z-dn.net/?f=%28%5Cdfrac%7B12%7D%7B44%7D%5Ctimes%2069%20%29)
=(0.2727 × 69 )
= 18.82 mg
Answer:
3 significant figure
Explanation:
Trailing zeros in a number are significant ONLY is the number contains a decimal point.
So if it was 100cm with out the decimal point would only have 1 significant figure.