Hydrofluoric acid solutions cannot be stored in glass containers because HF reacts readily with silica dioxide in glass to produce hexafluorosilicic acid (H2SiF6). SiO2(s) + 6 HF(aq) H2SiF6(aq) + 2 H2O(l)
24.0 g SiO2 and 60.0 g of HF react to yield 45.8 g H2SiF6.
(a) What is the limiting reactant?
SiO2
HF
(b) What is the mass of the excess reactant?
(c) What is the theoretical yield of H2SiF6?
(d) What is the percent yield?

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.

it's 3.2 on edge, i just took the test.

d) a person who learns about the world by observing it.

explanation:

scientist are people who discover why and how things are done and made in the world.