What is the slope of the trend line (best fit line) according to the line equation? 19.000 g/mL
19.319 g/mL
0.0517 g/mL

I had to do this same project and the answer is 19.319 g/mL.

Explanation:

Microsoft excel would not work for me so I had to improvise. By dividing 15 by 0.776, I was able to get my closest answer to 19.319 which was 19.329.

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.

the answers would be

the first one and the second one