Question

GUYS HELPP

Convert the following number of moles of the chemical into its corresponding mass in grams
1. 2.360 moles of lead (II) oxide

Convert the following masses into their corresponding number of moles.
2. 23.5 g of sodium chloride
3. 0.778 g of sodium cyanide

Convert the following number of moles into their corresponding number of particles.
4. 0.0455 moles of hydrochloric acid

Answer 1

$mass = number \: of \: moles \times molar \: mass$

1)

$m = 2.36(223.2) = 526.752 \: grams$

2)

$n = \frac{mass}{molar \: mass} = \frac{23.5}{58.4} = 0.40239 \: moles$

3)

$n = \frac{0.778}{49} = 0.0158775 \: moles$

4)

$n = \frac{number \: of \: particles}{avogadros \: constant}$

$n \: o \: p = 0.0455 \times 6.02 \times 10 {}^{23} = 2.7391 \times 10 {}^{22} particles$