Calculate the answer. express it in scientific notation and include the correct number of significant figures.
(12 x 10^4) x (5 x 10^-2)
6 x 10^3
6.0 x 10^2
6 x 10^6

6x10^3

Explanation:

By multiplying (12 x 10^4) and (5 x 10^-2) we get

120000 x 0.05 = 6000

Since we are multiplying, the number of significant figures we need comes from the number with the least amount of sig figs in the problem (5 x 10^-2 has only 1 sig fig, 12 x 10^4 has 2). Therefore, our answer should only have 1 significant figure and we get 6 x 10^3.

neutrons are in the middle of the atom and the electrons, which are much smaller.

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.