**PLZ PLZ HELP ITS A TEST AND DUE SOON I WILL GIVE BRAINLIST TO THE RIGHT ANSWER** Zn + 2HCI → H2 + ZnCl2

At STP, how many liters of hydrogen gas (Hz) will be produced if 31.2 g of zinc is allowed to react with excess hydrochloric acid?
A)10.7L
B)2.82 L
C)9.66 L
D)4.30 L

A__ is two or more substances that are together in the same place but are not chemically combined

Pls! plant cells and animal cells were observed under a microscope. the characteristics of two cells are listed below. cell p: does not capture sunlight cell q: has cytoplasm but no chloroplast which statement about the two cells is correct? cell q also has a cell wall. cell q also has large vacuole. cell p also has a large vacuole. cell p also has a cell membrane.

Consider the reaction of a(g) + b(g) + c(g) => d(g) for which the following data were obtained: experiment initial [a], mol/l initial [b], mol/l initial [c], mol/l initial rate, mol/l. s 1 0.0500 0.0500 0.0100 6.25 x 10^-3 2 0.100 0.0500 0.0100 2.50 x 10^-2 3 0.100 0.100 0.0100 1.00 x 10^-1 4 0.0500 0.0500 0.0200 6.25 x 10^-3 what is the rate law for the reaction?