What is the coefficient for potassium in the balanced equation: ___Na + ___K2S — ___K + ___Na2S

For the reaction ___HCl + ___NaOH — ___NaCl + ___H2O, which is the limiting reactant given 100.0 g of sodium hydroxide and 100.0 g of hydrochloric acid?

In the reaction A + B — C + D, if element B is the excess, then —

In the reaction __RbNO3 — ___RbNO2 + ___O2, how many moles of O2 are produced when 5.0 mol of RbNO3 decompose?

In the reaction ___H2 + __O2 — ___H2O, How many moles of oxygen are required to fully react with 6.0 mol of hydrogen?

Calculate the number of molecules present in .20 mols of H2O.

The sum of the atomic masses of all the atoms in a formula for a covalent compound is the—

How many grams of NaCl are preset in 11.00 moles?

What is the molecular mass of MgSO4?

A molecule has been identified to contain 40.9% carbon, 4.58% hydrogen, and 54.5% oxygen. What is the empirical formula for the compound?

Calcium hydroxide and hydrochloric acid react to form calcium chloride and water. If the chemicals are present in exactly the correct ratios to fully use all of the ingredients, how many moles of water can be formed from 5 moles of hydrochloric acid?

How many moles are in 75.0 grams of nitrogen gas?

In the reaction __H2 + ___O2 — ___H2O, what is the mole ratio of hydrogen to water?

How many moles of CO2 are present in 200.0 g?

A three mole sample of K2S would have how many atoms of potassium?

if a sample contained 3.01 x 10 to the 23rd power atoms of tellurium, how many grams would this be?

How many moles are there in a sample containing 2.408 x 10 to the 24th power atoms of carbon?

___Cu2S + ___O2 — ___Cu2O + ___SO2 What is the greatest mass of SO2 that can be produced from 15 mol Cu2S?

___CaCO3 + ___HCl — ____CO2 + ___H2O this equation was used to find that only 100 g of CO2 was produced. If 200 g of HCl were used to begin the reaction, what is the percent yield?

What is the definition of the limiting reagent?

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