The reaction of solid zinc metal and hydrochloric acid produces zinc chloride and hydrogen gas as shown below. How many grams of zinc metal would I need to produce 45 mL of hydrogen gas at a pressure of 2.736 atm and 27°C? Zn(s) + HCl(aq) à ZnCl2(aq) + H2(g)

(unbalanced)

When molecules of water vapor in the air come in contact with a cold can of soft drink , they lose energy ,slow down,and form a liquid due to decrease in ?

Write two balanced equations 1. dissolving of solid sodium hydroxide in water 2. the reaction of sodium hydroxide solution with hydrochloric acid

When 225mg of anthracene, c14h10(s), was burned in a bomb calorimeter the temperature rose by 1.75k. calculate the calorimeter constant. by how much will the temperature rise when 125mg of phenol, c6h5oh(s), is burned in the calorimeter under the same conditions? (δch< (c14h10,s)=–7061 kj mol−1.)