a sample of brass weighing 5.772 g is reacted completely with HCl. Only zinc reacts with...
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sample of brass weighing 5.772 g is reacted completely with HCl.
Only zinc reacts with...
When 0.40 g of impure zinc reacted with excess hydrochloric acid, 127mL of hydrogen gas were...
When 0.40 g of impure zinc reacted with excess hydrochloric acid, 127mL of hydrogen gas were collected over water at 10 degrees C at a total pressure of 737.77 Torr. The vapor pressure of water at 10 degrees C is 9.21 Torr. The reaction in question is: Zn (s) + 2HCl (aq) --> ZnCl2 (aq) + H2 (aq) A.) what amount (in grams) of H2 gas was collected? B.) what is the percentage of purity of the zinc, assuming that...
if 250 ml of 1.50 M HCl reacts with excess zinc how many moles of zinc...
if 250 ml of 1.50 M HCl reacts with excess zinc how many moles of zinc chloride are formed Zn(s) + 2HCl(aq) ----> ZnCl2(aq) + H2(g)
A sample of zinc metal is allowed to react completely with an excess of hydrochloric acid:...
A sample of zinc metal is allowed to react completely with an excess of hydrochloric acid: Zn(s) + 2 HCl(aq) → ZnCl2(aq) + H2(8) look GO The hydrogen gas produced is collected over water at 25.0°C. The volume of the gas is 8.90 L, and the atmospheric pressure is 0.951 atm. Calculate the amount of zinc metal in grams consumed in the reaction. rint rences (Vapor pressure of water at 25°C = 23.8 mmHg.) gZn
Hydrogen gas is produced by the reaction of hydrochloric acid, HCl, on zinc metal. 2HCl (aq)...
Hydrogen gas is produced by the reaction of hydrochloric acid, HCl, on zinc metal. 2HCl (aq) + Zn (s) --> ZnCl2 (aq) + H2 (g) The gas is collected over water. If 106 mL of gas is collected at 28C and 775 mmHg, what is the mass of hydrogen collected? (vapor pressure of water at 28C is 25.6 mmHg)
Zinc reacts with hydrochloric acid to form hydrogen gas. A 0.258 g sample of Zinc reacts...
Zinc reacts with hydrochloric acid to form hydrogen gas. A 0.258 g sample of Zinc reacts with 25.0 mL of 0.250 M HCI solution. What volume does the hydrogen has formed occupy at 24.0 °C and 0.990 atm? Zn(s) + 2HCl(aq) --ZnCl2(aq) + H2(g) 33.0 mL 97.3 mL 6.21 mL 77.0 mL
The zinc content of a 1.45 g ore sample was determined by dissolving the ore in...
The zinc content of a 1.45 g ore sample was determined by dissolving the ore in HCl, which reacts with the zinc, and then neutralizing excess HCl with NaOH. The reaction of HCl with Zn is shown below:Zn+2HCL--ZnCl2+H2The ore was dissolved in 150 mL of 0.600 M HCl, and the resulting solution was diluted to a total volume of 300 mL. A 20.0 mL aliquot of the final solution required 8.48 mL of 0.508 M NaOH for the HCl present...
Zinc reacts with hydrochloric acid according to the reaction equation Zn(s)+2HCl(aq)⟶ZnCl2(aq)+H2(g)Zn(s)+2HCl(aq)⟶ZnCl2(aq)+H2(g) How many milliliters of 2.00...
Zinc reacts with hydrochloric acid according to the reaction equation Zn(s)+2HCl(aq)⟶ZnCl2(aq)+H2(g)Zn(s)+2HCl(aq)⟶ZnCl2(aq)+H2(g) How many milliliters of 2.00 M HCl(aq)2.00 M HCl(aq) are required to react with 8.55 g Zn(s)?
zinc metal reacts with excess hydrochloric acid to produce hydrogen gas according to the following equation:...
zinc metal reacts with excess hydrochloric acid to produce hydrogen gas according to the following equation: Zn(s) + 2HCl(aq)ZnCl2(aq) + H2(g) The product gas, H2, is collected over water at a temperature of 20 °C and a pressure of 745 mm Hg. If the wet H2 gas formed occupies a volume of 9.32 L, the number of moles of Zn reacted was __mol. The vapor pressure of water is 17.5 mm Hg at 20 °C.
Hydrogen gas can be prepared by reaction of zinc metal with aqueous HCl: Zn(s)+2HCl(aq)→ZnCl2(aq)+H2(g) How many grams o...
Hydrogen gas can be prepared by reaction of zinc metal with aqueous HCl: Zn(s)+2HCl(aq)→ZnCl2(aq)+H2(g) How many grams of zinc would you start with if you wanted to prepare 5.05 L of H2 at 260 mm Hg and 26.0 Celsius?
Modern pennies are composed of zinc coated with copper. A student determines the mass of a...
Modern pennies are composed of zinc coated with copper. A student determines the mass of a penny to be 2.484 g and then makes several scratches in the copper coating (to expose the underlying zinc). The student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the HCl (the copper remains undissolved): Zn(s)+2HCl(aq)→H2(g)+ZnCl2(aq) The student collects the hydrogen produced over water at 25 ∘C. The collected gas occupies a volume of 0.899 L...
A sample of zinc metal is allowed to react completely with an excess of hydrochloric acid: Zn(s) + 2 HCl(aq) → ZnCl2(aq) + H2(8) look GO The hydrogen gas produced is collected over water at 25.0°C. The volume of the gas is 8.90 L, and the atmospheric pressure is 0.951 atm. Calculate the amount of zinc metal in grams consumed in the reaction. rint rences (Vapor pressure of water at 25°C = 23.8 mmHg.) gZn
Zinc reacts with hydrochloric acid to form hydrogen gas. A 0.258 g sample of Zinc reacts with 25.0 mL of 0.250 M HCI solution. What volume does the hydrogen has formed occupy at 24.0 °C and 0.990 atm? Zn(s) + 2HCl(aq) --ZnCl2(aq) + H2(g) 33.0 mL 97.3 mL 6.21 mL 77.0 mL
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