How much copper is present in a cube that measures 3.20cm on each side, if the density of copper is 8.96 g/mL

290.32 g

Explanation:

First we calculate the volume of the cube:

Now we convert cubic centimeters to mililiters:

Finally we calculate the mass, using the equation for density:

i think it is d. e because the next one is igneous.

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.