Which of the following is true regarding the atoms involved in a chemical reaction? A The same number of each type of atom will always be present before and after a chemical reaction takes place. B Some of the atoms present before the reaction will always be lost during a chemical reaction. Some of the atoms will always be changed into a different type of atom by a chemical reaction. D During a chemical reaction, atoms will always be combined into much larger molecules.​

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.

a polar bond is formed when electrons are shared unevenly between atoms

2b2t

explanation:

2b2t

answerspecific gravity;