2 Al (s) + 6 HCl (aq) = 2 AlCl3 (aq) + 3 H2 (g) 20.0 grams of Al are mixed with 100. mL of 6.0 M HCl.
how would i format a dimensional analysis to get the mols of HCl? it's supposed to be 2 steps but i don't know how to format it

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

The table describes how some substances were formed substance 19 description formed by boiling pure water formed by combining three hydrogen atoms to every nitrogen atom formed by adding 5 g of sugar to 1 l of water formed by compressing carbon under high pressure based on the given descriptions, which substance is most likely a mixture?

What is the mass of 0.46 mil of mgcl2