4.) A 5.025 g sample of calcium is burned in air to produce a mixture of two ionic compounds, calcium oxide and calcium nitride. Water is added to this mixture. It reacts with calcium oxide to form 4.832g of calcium hydroxide. How many grams of calcium oxide are formed? How many grams of calcium nitride?

Hi! Can I please have this answered very quickly. First person did not answer it.

If iron (III) oxide and carbon graphite C(s) are reacted at high temperatures, liquid iron and carbon monoxide are produced. If 25.0 g of iron (III) oxide and 5.75 g of carbon are allowed to react, how much iron is produced?

During an accident, the air bag inflates due to the decomposition reaction of sodium azide (NaN3).  When heated, solid sodium azide reacts by itself to form solid sodium and nitrogen gas as products. What mass of sodium azide do you need to produce 200. L of nitrogen gas.  The density of nitrogen gas is 1.2056 g/L.

The compound FeCl3 can be formed by combining Fe and Cl₂. This can be represented at the atomic level by a chemical equation: 2Fe + 3Cl₂ →→→→→→→2FeCl3 According to the law of conservation of mass, if 29.2 grams of Fe and 55.6 grams of Cl₂ combine to form FeCl3, how many grams of FeCl3 must form? grams FeCl3

15.0 g of iron is allowed to react with air to produce Iron III Oxide. If the reaction is complete, how much Iron III oxide is produced?

In a combustion reaction 33.658 g of oxygen are reacted with an unknown hydrocarbon and produces 33.057 g of carbon dioxide and 10.816 g of water. What is the mass of the unknown hydrocarbon that was reacted?

A student reacted 15.000 g of Lead with 2.325 g Sulfur to form Lead Sulfide. How much grams of Lead Sulfide will be formed after the reaction?

The black powder used to propel each firework into the sky made up of 75% by mass potassium nitrate, 15% by mass charcoal, and 10% by mass sulfur. If you wanted to make 50 grams of black powder, how many grams of potassium nitrate would you need?

Crime scene investigators keep a wide variety of compounds on hand to help with identifying unknown substances they find in the course of their duties. One such investigator, while reorganizing their shelves, has mixed up several small vials and is unsure about the identity of a certain powder. Elemental analysis of the compound reveals that it is 67.31 % carbon, 6.978% hydrogen, 4.617% nitrogen, and 21.10% oxygen by mass.     Which of the compounds could the powder be? C17H19NO3C17H19NO3 = morphine, analgesic C17H21NO4C17H21NO4 = cocaine, illicit drug C7H5N3O6C7H5N3O6 = 2,4,6-trinitrotoluene (TNT), commonly used explosive C10H15NC10H15N = methamphetamine, stimulant C4H5N2OC4H5N2O = caffeine, stimulant C11H15NO2C11H15NO2 = 3,4-methylenedioxymethamphetamine (MDMA), illicit drug C21H23NO5C21H23NO5 = heroin, illicit drug C3H6NO3C3H6NO3 = hexamethylene triperoxide diamine (HMTD), commonly used explosive