Jose is conducting an experiment to investigate the properties of an unknown powder. Jose's observations are listed on the data table below: Observations of unknown
Observations of an unknown powder
1 The powder melts when heated.
2 The powder has large, white, crystals.
3 The powder dissolves in water.
4 The powder reacts with acid.

Which of the following shows a physical and a chemical property of the powder?

what's the question?

explanation:

for points guys

hloride, what is the mass of calcium in

explanation:

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.