Physical Chemistry Questions
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in a chemical reaction, the difference between the potential energy of the products and the potential energy of the reactants is defined as the
given the reaction : A(s)+ B(aq)-C(aq)+D(s)Which change would increase the rate of reaction
in what type of reaction do the products of the reaction always poses more potential energy that the reactants
the activation energy of a chemical reaction can be decreased by the addition of
as the temperature increases , the rate of an exothermic reaction
which expression represent the delta h for a chemical reaction in term of the potential energy, PE, of its product and reactants
at STP, which 4.0- gram zinc sample will react fastest dilute hydrochloric acid ?
as the number of effective collisions between reacting particles increases, the rate of reaction
as temperature of a chemical reaction in the gas phase is increased, the rate of the reaction increases because
a thermometer is in a beaker of water. Which statement best explains why the thermometer reading initially increases when LiBr(s) is dissolved in the water?
mg+2h20-mg(oh)2+h2at which temperature will the reaction occur at the greatest rate?
after being ignited in a Bunsen burner flame, a piece of magnesium ribbon burns brightly, giving off heat and light. In this situation, the bunsen burner flame provides
What is the mass of one silicon atom (relative atomic mass = 28.1)?
What is the molar mass of glucose, C6H12O6 (relative formula mass = 180.0)?
In a reaction, 1.0 mol of copper reacts with 0.25 mol of oxygen to form 0.50 mol of copper oxide. What is a correct balanced equation for this reaction?
Magnesium reacts with dilute hydrochloric acid. When the reaction is complete, some magnesium is still visible. What does this mean?
Hydrogen reacts with oxygen to produce water: 2H2 + O2 → 2H2O. What is the maximum mass of oxygen that will react with 6.0 g of hydrogen? (Relative formula masses: H2 = 2.0, O2 = 32.0)
How many atoms are there in a molecule of ammonia, NH3?
What is the mass of 0.75 mol of hydrogen molecules (relative formula mass = 2.0)?
What is the amount, in mol, of oxygen atoms in 8.0 g of oxygen atoms (relative atomic mass = 16.0)?