A student reacts Mg and HCl together. The product of this reaction is H, gas and MgCl2. The balanced equation for this reaction is
Mg + 2HCI - H2 + MgCl2
If I need to create 50 L of Hy, how many moles of HCI should I start with?
a) 2.3 mol HCI
b) 4.5 mol HCI
c) 1.1 mol HCI
d) 44.6 mol HCI

In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?

Calculate the mass of carbon in 97.0 g of sucrose c12h22o11

There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .