Question

can u explain these for me pls..cant understand them​

Answer 1

Step-by-step explanation:

Dear it is very simple

Number of molecules=moles×molarORatomic mass

1)2.5×44=110 moles of CO2

2)3.4×17=57.8 moles of NH3

3)1.09×78=85.02 moles of C6H6

4)0.01×60=6 moles of CH3COOH

Answer 2

Step-by-step explanation:

it's pretty simple

number of molecules = moles× avagadro number

a) 2.5×6.02×10^23= 1.5× 10^24

all rest is the same just multiply number of moles by avagadro number

$avagadro \: number = 6.022 \times {10}^{23}$