C2H4(g) + 3O2(g) —> 2CO2(g) + 2H2O(g) change in H1 = ?

The combustion of C2H4 is represented by the equation above.

Use the enthalpies of formation in the table the calculate the value of change in H1 for the reaction.

the role of the microscope world in creating new materials .

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.

what is the average time it took the car to travel 0.25 meters?

⇒ 2.23 seconds

what is the average time it took the car to travel 0.50 meters?

⇒ 3.13 seconds

the answers are

c and c