Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric acid, HCl(aq), as described by the chemical equation   MnO2(s)+4HCl(aq)⟶MnCl2(aq)+2H2 O(l)+Cl2(g)   How much MnO2(s) should be added to excess HCl(aq) to obtain 175 mL Cl2(g) at 25 °C and 755 Torr

A chemist performs a gravimetric analysis. The chemist combines 1.00 L of 2.00 M AGNO, (ag) with 1.00 L of 4.00M NaCl (ag) in an Erlenmeyer flask. Both the AgNO3 (aq) solution and the NaCl(aq) solution are colorless. After the mixture has been stirred, a cloudy white substance is observed at the bottom of the flask. What is the expected mass of AgCl (s), in grams, assuming that the yield is 100%? In the box, enter the mass to the nearest gram.

A concentrated perchloric acid solution is 69.8% HCIO4 by mass and its density is 1.68 g mL-1. What volume (in litres) of the concentrated perchloric acid solution is needed to make 2.92L of 3.20 mol L-1 HCIO4(aq)? Molar masses, in g mol-1; HCIO4, 100.458 H2O, 18.016 0.447 L 0.0939 L 0.800 L 0.559 L 0.390 L Back: Question Menu

How many milliliters of 10.0 M HCl(aq) are needed to prepare 920.0 mL of 1.00 M HCl(aq)?

How many millilitres of 0.450 mol L−1 H2SO4(aq) are required to completely neutralize 46.7 mL of 0.930 mol L−1 KOH(aq) ? Hint: Write a balanced chemical equation for the reaction.   Give your answer in mL, accurate to three significant figures. Do not include units as part of your answer.

Copper(II) ions can be precipitated as copper(II) carbonate: CuSO4(aq) + Na2CO3(aq) → CuCO3(s) + Na2SO4(aq)   1. How many grams of CuCO3(s) would be formed from the copper ions in 78.1 mL of 0.313 M CuSO4?

Calculate the number of milliliters of 0.689 M NaOH required to precipitate all of the A1³+ ions in 163 mL of 0.784 M Al2(SO4)3 solution as Al(OH)3. The equation for the reaction is: Al2(SO4)3 (aq) + 6NaOH(aq) → 2Al(OH)3 (s) + 3Na2SO4 (aq) Volume = | mL

What mass of Mg, in g, is required to react with 63.4 mL of 0.269 M AgNO3 solution? Mg(s) + 2AgNO3(aq) → 2Ag(s) + Mg(NO3)2(aq) g Mg

Lead(II) nitrate and ammonium iodide react to form lead(II) iodide and ammonium nitrate according to the reaction Pb(NO,),(aq) + 2 NH,I(aq) PbI, (s) + 2 NH,NO; (aq) What volume of a 0.170 M NHẠI solution is required to react with 119 mL of a 0.340 M Pb(NO3)2 solution? volume: mL How many moles of PbI, are formed from this reaction? moles: mol Pbl2 Aa A étv MacBook Air DD F12 DII F11 • F9 F10 80 888 F8 F7 F6

What mass of precipitate (in g) is formed when 20.5 mL of 0.800 M Co(NO₃)₂ reacts with 21.0 mL of 0.800 M NaOH in the following chemical reaction? Co(NO₃)₂(aq) + 2 NaOH(aq) → Co(OH)₂(s) + 2 NaNO₃(aq)