A 25.00 L tank is filled with 0.0300 kg of Ar and 10.05 g of Ne. The two gases mix in the container but do not react to form any compounds (i. e. they do not combine chemically).

(a) Find the total number of atoms in the container.

(b) Find the density of the gas mixture. Express your answer in terms of ng/umº. Please
remember to show all of your work with the appropriate units.

what is the general relationship between a galaxy's distance from earth and its speed?

the answer is:

the farther away a galaxy is from us, the faster it is moving away from us.

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer