Bromine forms three compounds with phosphorus. The compounds have the molecular formulae PBR3, PBr5 and P2BR4. (i) Explain what is meant by the term molecular formula. (ii) PBr3 can be prepared by heating bromine with phosphorus, P4- Write a balanced equation for this reaction.

The first two steps in the industrial synthesis of nitric acid produce nitrogen dioxide from ammonia: 4 NH; (g) + 5 0, (g) = 4 NO (g) + 6 H,0 (g) K1 2 NO (3) +0, (g) = 2NO, (g) K2 The net reaction is: 4 NH; (g) + 70, (g) = 4 NO, (g) + 6 H,0 (g) K Write an equation that gives the overall equilibrium constant K in terms of the equilibrium constants K, and K,. If you need to include any physical constants, be sure you use their standard symbols, which you'll find in the ALEKS Calculator. K = olo

What is the lewis structure for SiO2?

A Group 2 metal with an electron configuration of [Ne]3s2 combines with fluorine (F2) to produce a compound. In g/mol, what is the molar mass of the product?

What is the maximum mass (in grams) of Magnesium Phosphate, Mg3(PO4)2, that can be obtained from 15.0 grams of Mg(OH)2 and 40.0 grams of H3PO4? Be sure to balance the equation.

Sodium hydrogen sulfate is used as a cleaning agent and as a flux (a substance that promotes the fusing of metals and prevents the formation of oxides). One of the ways in which sodium hydrogen sulfate is manufactured is by reacting sodium dichromate, Na2Cr2O7, with sulfuric acid. This process also forms water and chromium(VI) oxide, CrO3. Write a balanced equation for this reaction. (You do not need to include states.) How many kilograms of sodium dichromate, Na2Cr2O7, are necessary to produce 130.4 kg of sodium hydrogen sulfate? How many kilograms of chromium(VI) oxide are formed when 130.4 kg of sodium hydrogen sulfate is made? What is the minimum volume of 18.0 M H2SO4 solution necessary to react with 874.0 kg of sodium dichromate? What is the maximum mass of sodium hydrogen sulfate, NaHSO4, that can be formed from the reaction of 874.0 kg of sodium dichromate with 400.0 L of 18.0 M H2SO4?

Write a balanced, neutralization reaction for the antacid “Gaviscon” who’s primary active ingredient is aluminum hydroxide, Al(OH)3.

Each of the chemically active Period 2 elements forms sta-ble compounds that have bonds to fluorine.(a) What are the names and formulas of these compounds?(b) Does ΔEN increase or decrease left to right across the period?(c) Does percent ionic character increase or decrease left to right?(d) Draw Lewis structures for these compounds.

Write a balanced chemical equation based on the following description: solid cesium reacts with solid cesium nitrite to form cesium oxide and nitrogen gas.

Acetylene (C 2 H 2 ) and limewater (Ca(OH) 2 ) can be produced by the reaction calcium carbide (CaC 2 ) with water.a) What is the theoretical yield of acetylene if 0.77 g of water is reacted with calcium carbide?b) If 0.34 g of acetylene is produced, calculate the percentage yield.