Other Chemistry Answers

2.804 g of a mixture containing manganese (IV) oxide and concentrated hydrochloric acid was heated. The resultant mixture weighed 2.591g and 71cm cube of chlorine,measured at s.t.p., was given off. show that thi reaction obeys the law of conservation of mass.[1 mole gas at s.t.p. occupies 22.4dm cube].

How many moles of oxygen gas react with 6.00 mol of propane C3H8?

What mass of silver chloride can be produced from 1.81L of a 0.161M solution of silver nitrate?

during electrolysis of aqueous solution containing 500 ml of NaBr, the cathode was obtained o, 56 l hydrogen under normal conditions. Find the mass in grams of the substance was obtained in the anode and the pH of the solution.

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How would you prepare a solution S of pottasium iodide with a mass concentratiin of 8.4g.l-1 in v=250ml? What is the molar concentration C of the solution?

the combustion of N subscript 2 can result in 2 products: NO(g) or NO(g). Write a complete and balanced combustion reaction for one mole of N subscript 2 for each of the possible products.

Whats a Base that is the opposite of Lactic acid and that Base will change a color when coming across lactic acid ?

Determine how many grams of resin are needed to remove the calcium ions from 200 mL of water that has 15.4 grains/gallon of hardness, if the resin exchange capacity is 2.78 millimoles of divalent cation per gram of resin.

If 33.0 L of a gas is collected at 23 °C and 255 kPa, what is its volume at STP?