Question

How many moles are in 4.4 g of Co2?(molar mass of co2 44u)

Answer 1

Answer:

1 mole

Explanation:

Using the formula number of moles = Mass/Mr 44/44=1 mole of CO2 present. (Mr of carbon dioxide is (2*16)+12=44 Now times by Abogadros constant: 1* 6.022*10^23=6.022*10^23 molecules of CO2 are present. Understanding the last step is critical.

Answer 2

Answer and Explanation:

$\diamond$ $\huge \tect{\boxed{\boxed{\mathcal {NUMBER \ OF \ MOLES }}}}$

$\implies$ Number of moles is a unit of measurement which is defined as

6.022 * 10²³ molecules

$\implies$ To find the number of moles we have different formulas

$\implies$ The following formula gives us the number of moles :

$\boxed{Number \ of \ moles = \dfrac{Given \ mass}{Molar \ mass}}$

$\boxed{Number \ of \ moles = \dfrac{Volume(in \ litres)}{22.4}}$

$\boxed{Number \ of \ moles = \dfrac{Number \ of \ particles}{6.022*10^{23}}}$

$\boxed{Number \ of \ moles = Molarity * Volume (in \ litres)}$

$\implies$ In the given case we use the first equation$\boxed{Number \ of \ moles = \dfrac{Given \ mass}{Molar \ mass}}$

$\implies$ Given that,

Given mass = 4.4g

Molar mass = 44g

$\implies$ Therefore,

Number of moles = $\dfrac{4.4}{44}$ = 0.1 mole

$\implies$ Hence, there is 0.1 moles in 4.4g of CO₂