For the reaction in which calcium metal reacts with water to form Ca(OH)2 and H2 (g), solve the following:  How many water molecules will be needed to react with 10.1 g of calcium?

Aqueous solutions of ammonia 1NH32 and bleach (active ingredient NaOCl) are sold as cleaning fluids, but bottles of both of them warn: “Never mix ammonia and bleach, as toxic gases may be produced.” One of the toxic gases that can be produced is chloroamine, NH2Cl.Another toxic gas that can be produced is nitrogen trichloride, NCl3. What is the oxidation number of N in nitrogen trichloride?

If 200 kJ of heat are supplied, how many grams of NO can be produced? N2(g) + O2(g)→ 2 NO(g) AH = 180.6 kJ/mol O 66.5 g 54.2 g O 30.1 g O 2.21 g

An aqueous solution of NaF and an aqueous solution of PbCl2 react. Predict what solid will form and balance the chemical equation. If 30.6 mL of NaF solution reacted completely with excess PbCl2 to produces 10.7 g of the precipitate. What is the molarity of the original NaF solution?

For the following reaction, 0.557 moles of potassium hydroxide are mixed with 0.224 moles of phosphoric acid. potassium hydroxide(aq)+phosphoric acid(aq)= potassium phosphate(aq)+water(l)   What is the formula for the limiting reagent? What is the maximum amount of potassium phosphate that can be produced?

6. Sodium sulfide reacts with hydrochloric acid to produce hydrogen sulfide and sodium chloride. How many grams of sodium sulfide are required for complete reaction with 15.0 mL of 0.250 M hydrochloric acid? The molar mass of sodium sulfide is 78.046 g/mol. (Hint: start by writing the balanced equation for the reaction.)

1. Label each of the following reactions as combination (synthesis), decomposition, single replacement, or double replacement. Then complete and balance the following reactions. Reaction Type of reaction? Redox or nonredox? H2(g) + 02 (g) → K (s) + N2 (g) → C (s) + 02 (g) → H2CO3 (aq) → electrical current H₂O (1) 300°C Au2O3 (s) 300°C Ag2O (s) → NH3 (g) → Pb (s) + Cu(NO3)2 (aq) → Na (s) + HOH (1) -> BaBr2 (aq) + Na3PO4 (aq) → H2SO4 (aq) + NH4OH(aq) → Cl2 (g) + NaI (aq) → Na2S (s) + HCl(aq) → Fe (s) + 02 (g) →

Because of the toxicity of mercury compounds, mercury(I) chloride is used in antibacterial salves. The mercury(I) ion Hg22+ consists of two bound Hg+ ions.How many grams of mercury(I) chloride are needed to saturate 4900 km3 of water (the volume of Lake Michigan)? (Ksp = 1.5 × 10−18) .

Use the chemical equation and table to answer the following question.   Which mass of water is expected to be produced in the reaction?   Question 4 options:   18.0 g because the mass of the products must equal the mass of the reactants.   76.5 g because the mass of the products must equal the mass of the reactants.   18.0 g because mass is created to form the products.   76.5 g because mass cannot be created or destroyed.

A sample of 8.51 g of solid calcium hydroxide is added to 35.0 mL of 0.480 M aqueous hydrochloric acid. Write the balanced chemical equation for the reaction. Physical states are optional. chemical equation: What is the limiting reactant? hydrochloric acid calcium hydroxide How many grams of salt are formed after the reaction is complete? mass of salt: How many grams of the excess reactant remain after the reaction is complete? excess reactant remaining: g