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Diano4ka-milaya [45]
4 years ago
12

A student was asked to separate a mixture of chemicals. The weight of each component within the mixture is as follows: potassium

bromide 2.53g and 0.760g barium sulfate. What is the percentage of barium sulfate within the mixture?
Chemistry
1 answer:
hram777 [196]4 years ago
6 0

Answer:

a

Explanation:

f

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Pb(SO4)2 + 4 LiNO3 → Pb(NO3)4 + 2 Li2SO4
Anvisha [2.4K]

Answer:

4.5 moles of lithium sulfate are produced.

Explanation:

Given data:

Number of moles of lead sulfate = 2.25 mol

Number of moles of lithium nitrate = 9.62 mol

Number of moles of lithium sulfate = ?

Solution:

Chemical equation:

Pb(SO₄)₂ + 4LiNO₃      →     Pb(NO₃)₄ + 2Li₂SO₄

Now we will compare the moles of lithium sulfate with lead sulfate and lithium nitrate.

                       Pb(SO₄)₂        :         Li₂SO₄

                            1                :             2

                          2.25           :          2/1×2.25 = 4.5 mol

                       LiNO₃            :             Li₂SO₄

                           4                :                2

                           9.62           :             2/4×9.62 = 4.81 mol

Pb(SO₄)₂  produces less number of moles of Li₂SO₄ thus it will act as limiting reactant and limit the yield of  Li₂SO₄.      

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3 years ago
A shorter wavelength does what to the frequency?
tresset_1 [31]
Increase the frequency to a higher frequency
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If you add ice to a glass of room-temperature water, does the water warm the ice or
ikadub [295]

By the First Law of Thermodynamics heat will flow from the hotter body to the cooler one.  The water warms the ice and in doing so the water gets colder.  

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Which statement is NOT correct? a. An activated complex has higher energy than any molecule contributing to it. b. If the forwar
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Answer:

<em>C.Activation energy is the same in the forward and reverse direction.</em>

<em>Explanation:</em>

<em>All these are true statements expect for option "C"</em>

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Which of the following is a reasonable way of describing the density of a gas at STP
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Answer:the answer is a

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