Simply (2^3)-2

0 - 1/64
0 1/64
0 2
0 64

1/64

Step-by-step explanation:

when exponents are separated by parentheses, multiply them

so (2³)^-2 = 2^-6

whenever an exponent is negative, change into fraction form with one as the numerator and the other term goes into the denominator and the exponent now becomes positive

2^-6 = =

The approximate molar mass of the polyethylene is 143,723.7 g/mol

Step-by-step explanation:

From the ideal gas equation

PV = mRT/MW

MW = mRT/PV

m = 1.44 g

R = 82.057 cm^3.atm/gmol.K T = 25°C = 25+273 = 298 K

P = 1.86 torr = 1.86/760 = 0.00245 atm

V = 100 mL = 100 cm^3

MW = 1.44×82.057×298/0.00245×100 = 143,723.7 g/mol