A physical change happens when one chemical substance is transformed into one or more different substances,
True
False

true

Explanation:

False {final answer}

Explanation:

The statement refers only about chemical change and not about physical change. Physical changes happens when substances undergo a change that does not change their chemical composition.

d: the voltage of the secondary coil is less than that of the primary coil.

im not suree sorry if wrong

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.