A25.0 ml sample of water at 90 °c has a mass of 24.12 g. calculate the density of water at this temperature.

             0.965 g.mL⁻¹

Data Given;

                   Density  =  ? g/mL

                   Mass  =  24.12 g  

                   Volume  =  25 mL

Formula Used;

                   Density  =  Mass ÷ Volume  

Putting values,

                   Density  =  24.12 g ÷ 25 mL

                   Density =  0.965 g.mL⁻¹

what is the general relationship between a galaxy's distance from earth and its speed?

the answer is:

the farther away a galaxy is from us, the faster it is moving away from us.

in the given question, the partial pressure is calculated by using the ideal gas equation, that is, pv = nrt

here, p is pressure, v is volume = 25 l, n is number of moles = 0.0104 moles, r is gas constant = -0.0821 l.atm / mol.k

t is temperature = 273 k

p = nrt / v

p = (0.0104 mol × 0.0821 l.atm / mol.k × 273 k) / 25 l

= 0.0093 atm