Three benifits of being multicellular is larger size, longer life, and specialization of cells.
The answer is a day, a year is the earth's revolution around the sun
To solve this we assume that the gas is an ideal gas.
Then, we can use the ideal gas equation which is expressed as PV = nRT. At a
constant volume and number of moles of the gas the ratio of T and P is
equal to some constant. At another set of condition, the constant is still the
same. Calculations are as follows:
T1/P1 = T2/P2
P2 = T2 x P1 / T1
P2 = 293 x 748 / 525
<span>P2 = 417.46 kPa</span>
mass of pentane = 22.5g
molar mass of pentane(C5H12) = 5 x 12.01 + 12 x 1.008
= 60.05 + 12.096
= 72.146g/mol
= 72.15g/mol
<u>22.5g</u><u> pentane</u> x <u>1 mol pentane</u> x <u>6.022 x 10^23</u><u> molecules ofpentane</u>
72.15g pentane 1 mol pentane
= <u>22.5 x 6.022 x 10^23 </u>
72.15
= 1.88 x 10^23 pentane molecules
1 pentane molecule has 5 C + 12 H atoms = 5+12 = 17 atoms
Hence;
1.88 x 10^23 pentane molecules x <u> 17 atoms </u>
1 pentane molecule
= 31.925 x 10^23 atoms
= <u>3.2 x 10^22 atoms </u>are present in 22.5g of pentane.
<u> 3.2 x 10^22 atoms</u>
