Question
In: Chemistry
A 8.67−g sample of a Cu-Zn alloy reacts with HCl acid to produce hydrogen gas. If...
A 8.67−g sample of a Cu-Zn alloy reacts with HCl acid to produce
hydrogen gas. If the hydrogen gas has a volume of 1.63 L at 20°C
and 745 mmHg, what is the percent of Zn in the alloy?
Solutions
queen_honey_blossom answered 2 years agoRelated Solutions
In a reaction of Zn (0.53 g) & HCl what is the volume of Hydrogen gas...
In a reaction of Zn (0.53 g) & HCl what is the volume of
Hydrogen gas generated? (assume atmospheric pressure)
2.70g of Zn (s) reacts with 50.0 mL of 1.00 M HCl solution to produce hydrogen...
2.70g of Zn (s) reacts with 50.0 mL of 1.00 M HCl solution to
produce hydrogen gas according to the reaction. (R = 0.08206
L·atm·K-1·mol-
1)
Zn(s) + 2HCl (aq) = ZnCl2 (aq) + H2(g)
a) calculate mole of Zn used in this reaction
b) calculate mole of HCl used in this reaction
c) calculate which reactant is a limiting reactant
d) calculate mole of hydrogen gas formed
e) calculate volume of H2 gas at STP in Liters that will...
100 g of nitrogen gas reacts with hydrogen gas to produce 40g of ammonia gas according...
100 g of nitrogen gas reacts with hydrogen gas to produce 40g of
ammonia gas according to the equation given below:
N2(g) + 3H2(g) ⇋ 2NH3(g)
Calculate the percentage yield of ammonia
100 g of nitrogen gas reacts with hydrogen gas to produce 40g of ammonia gas according...
100 g of nitrogen gas reacts with hydrogen gas to produce 40g of
ammonia gas according to the equation given below:
N2(g) + 3H2(g) ⇋ 2NH3(g)
Calculate the percentage yield of ammonia
The reaction of the alloy with the acid is exothermic. If the hydrogen gas released is...
The reaction of the alloy with the acid is exothermic. If the
hydrogen gas released is warmer than the water temperature and you
use the incorrect low temperature, how would this effect your
calculated %Al result (high or low)?
Explain.
A student performs three runs of the experiment using pure
aluminum and determines an average NH2 of 0.01156 mol/g
and a standard deviation of 0.00001 mol/g. What do
these results tell you about the random and systematic errors
present in...
Mg metal reacts with HCl to produce hydrogen gas. Mg(s)+2HCl(aq)→MgCl2(aq)+H2(g)......A)What volume of hydrogen at 0 ∘C...
Mg metal reacts with HCl to produce hydrogen gas.
Mg(s)+2HCl(aq)→MgCl2(aq)+H2(g)......A)What volume of hydrogen at 0
∘C and 1.00 atm (STP) is released when 9.25 g of Mg reacts B)How
many grams of magnesium are needed to prepare 3.90 L of H2 at 730
mmHg and 20 ∘C
Zinc (Zn) metal reacts with hydrochloric acid (HCl) according to the following reaction: Zn(s) + 2...
Zinc (Zn) metal reacts with hydrochloric acid (HCl) according to
the following reaction: Zn(s) + 2 HCl(aq) ZnCl2(aq) + H2(g)What
volume of H2 gas would be collected over water if 6.93 g Zn metal
were allowed to react with 25.0 mL of 1.0 M HCl at 25.0 oC? The
vapour pressure of water at 25.0 oC is 23.8 torr, and the pressure
of the laboratory is 1.00 atm
18. Hydrogen gas reacts with oxygen gas to form water vapor. If 34.5 g of hydrogen...
18. Hydrogen gas reacts with oxygen gas to form water vapor. If
34.5 g of hydrogen gas react with 26.6 g of oxygen gas, how many
grams of water vapor will be produced? 2H2(g) + O2(g) -->
2H2O(g)
20. The reaction of 22.5 g of Fe with excess of oxygen gas
produced 24.2 g of Fe2O3. Calculate the percent yield.
21. Milk of magnesia contains magnesium hydroxide. Mg(OH)2
reacted with HCl to form aqueous magnesium chloride and liquid
water. Write...
21. In the Haber - Bosch process, hydrogen gas reacts with nitrogen gas to produce ammonia...
21.
In the Haber
-
Bosch process, hydrogen gas reacts with nitrogen gas to produce
ammonia
according to the following equation
3 H
2
(g) + N
2
(g) → 2 NH
3
(g)
The production of ammonia is difficult and often results in
lower yields than those predicted
from the chemical equation. For instance, if 1.36 g of hydrogen
gas are allowed to react with
9.97 g of nitrogen gas, 2.24 g of ammonia are produced. What is
the...
Hydrogen gas reacts with nitrogen gas to form ammonia according to the reaction below. H2 (g)...
Hydrogen gas reacts with nitrogen gas to form ammonia according
to the reaction below.
H2 (g) + N2 (g) → NH3 (g)
a. How many moles of NH3 are produced for every 1 mole of H2?
Classify this reaction.
b. Suppose 12.2 g of H2 (g) reacts with 48.4 g of N2 (g).
Identify the limiting reactant. What is the theoretical yield of
the ammonia product in grams ? Show your work.
c. What mass (in grams) of the excess...
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