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avanturin [10]
3 years ago
15

A 10 gram sample of material, a, was placed in water. four grams of it, b, did not dissolve, even after being separated and plac

ed in a second volume of water. bcould not be decomposed into any simpler substances. evaporation of the water from the soluble portion of ayielded 6 grams of solid,
c. heating bin air yielded 8 grams of gas, d, leaving no solid residue. melting and electrolysis of cyielded 2.4 grams of metal, e, and 3.6 grams of gas, f. classify each material described above by placing the corresponding letter in the appropriate place in the table below.
Chemistry
1 answer:
kicyunya [14]3 years ago
3 0
Sksksk isjsjs jsjsjs jsjsjs jsjsjs jsjsjs ksjss
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In the laboratory, a quantity of I2 was reacted with excess H2 to give 1.26 moles of HI. It is also known that the percent yield
Anon25 [30]

Answer:

1.008moles of iodine

Explanation:

Hello,

This question requires us to calculate the theoretical yield of I₂ or number of moles that reacted.

Percent yield = (actual yield / estimated yield) × 100

Actual yield = 1.2moles

Estimated yield = ?

Percentage yield = 84%

84 / 100 = 1.2 / x

Cross multiply and solve for x

100x = 84 × 1.2

100x = 100.8

x = 100.8/100

x = 1.008moles

1.008 moles of I₂ reacted in excess of H₂ to give 1.2 moles of HI

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Before a bond breaks in a chemical reaction, what happens
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They have to form a chemical bond in order to brake them down first
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Why can’t you perform single displacement reactions with group IA metals?
pishuonlain [190]
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Reducing agent<span> is an element  or compound that loses an </span>electron<span> to another </span>chemical species<span> in a </span>redox <span>chemical reaction and they have been oxidized.
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