You determined that Cr2O3 is the limiting reactant in the reaction below. If the reaction begins with85.00 grams of Cr2O3 and157.0 grams of silicon, how many grams of the excess reactant will be used?

An atom whose valence electrons conform to the octet rule is: a) more likely to form covalent bonds b) more likely to form ionic bonds c) more likely to form hydrogen bonds d) more likely to become a free radical e) less likely to form any bond with

Which of the following is a compound? a. H2O b. He c. O₂ d. Ca

In general, why would a thermometer increase in temperature? What happens with the energy involved?

A355-ml soft drink sample contains 0.133 mol of sucrose (table sugar). What is the molar concentration of sucrose in the beverage?

The solubility of an ionic compound in water at 25°C is 5.0 g/L. List all of the possible methods one might use to make more than 5.0 grams of this compound dissolve in one liter of water.

You determine the volume of your plastic bag (simulated human stomach) is 1.05 L. How many grams of NaHCO3 (s) are required to fill this container given a 70.

If 3.00 g of limestone reacted, what mass of calcium chloride would be produced?

Which four quantities a, b, c and d are required to balance the equation ... aMgO (s) + bHCl (aq) = = > cMgCl2 (aq) + dH2O (l)

Find the number of moles of water that can be formed if you have 134 mol of hydrogen gas and 62 mol of oxygen gas

The amount of kinetic energy an object has depends on its. motion position gravity height