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How many grams of copper are produced when excess aluminum reacts with 11.0 g of copper oxide.
When a 5.8 g serving of cereal burns in the same bomb calorimeter, the temperatrue of the calorimeter increases by 1.92 C. Calculate the fuel value of the cereal in kj/g.
determine the mass of unknown liquid that you transferred to the flask before heating in the determinig the molar mass of a volatile liquid by the dumas method expermant
The normal freezing point of water H2O is 0.00 oC and its Kf value is 1.86 oC/m. Assuming complete dissociation of the electrolyte,
what is the purpose of anhydrous CaCl2? why is it important yhat none of the solid CaCl2 be included in the final distillation of 1- bromobutne.
when 7.50g of magnesium reacts with 9.50g hydrochloric acid, hydrogen gas is formed. what is the limiting reagent?
Consider three different compounds of the hypothetical element X using the table of bond lenghts as a reference, rank the three compounds shown below in order of increasing
Which of the following are ways that catalysts can speed up reactions rates? You must check all answers that apply.
Indicate whether each of the following reactions lies to the right, favoring the formation of products, or lies to the left, favoring formation of reactants.
A mixture of table salt and ice is used to chill the contents of hand-operated ice-cream makers. What is the melting point of a mixture of 2.00 lb of NaCl and 12.00 pounds of ice if exactly half of the ice melts?
Oxygen gas is collected by water displacement from the reaction of sodium peroxide and water. The oxygen gas displaces 318 ml of water at 23 degrees C and 1 atm. What is the pressure of the dry oxygen gas?
When one of the atoms involved in a covalent bond has a much higher electronegativity than the other a bond results.
Consider a saturated solution of Zinc arsenate, Zn3(AsO4)2, in which the following reactions can occur: Zn3(AsO4)s (s) --> 3Zn+2 + 2AsO4 -3 Ksp=1.0e-27 AsO4 -3 + H2O ---> HAsO4 -2 + OH- Kb1=3
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