Students were conducting an investigation to see how the lid of a cup affects the temperature of the liquid inside the cup. The students will set up two identical cups, one with a lid and one without. They will use the same amount of water for each cup with the same initial temperature. After 30 minutes they will record the temperature of each cup to see which one had the most temperature change. Drag and drop each of the variables to their correct classification. Independent variable
Dependent variable
Controlled variable

Time
Initial temperature
Cups
Lid
Temperature

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.

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.