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ELEN [110]
2 years ago
5

A 9.86 g sample of an aqueous solution of hydroiodic acid contains an unknown amount of the acid. If 27.5 mL of 0.337 M potassiu

m hydroxide are required to neutralize the hydroiodic acid, what is the percent by mass of hydroiodic acid in the mixture?
% by mass​
Chemistry
1 answer:
Aneli [31]2 years ago
7 0

Answer:

88.3% of hydroiodic acid is found

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What is the initial temperature (in Celsius) of a 675 ml balloon if the
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Answer: 127 (3.s.f)

Explanation:

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3 years ago
How many moles of C2H2 are needed to react completely with 84.0 mol O2?
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The reaction between C2H2 and O2 is as follows:
2C2H2 + 5O2 = 4CO2 + 2H2O

After balancing the equation, the reaction ratio between C2H2 and O2 is 2:5.

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3 years ago
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____ KClO3-----> ____ KCl + ____O3
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Answer:

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2 years ago
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joja [24]

The atomic mass of the  magnesium is : 24.31⋅g.

<h3>What is isotopes?</h3>

Isotopes are members of a family of elements that all have the same number of protons and different numbers of neutrons. The number of protons in the nucleus determines the atomic number of an element on the periodic table.

Magnesium has three natural isotopes: ²⁴Mg, ²⁵Mg, and ²⁶Mg.

<h3>What is atomic mass ?</h3>

Atomic mass is the mass of an atom. The SI unit of mass is the kilogram, while atomic mass is often expressed in the non-SI unit dalton (synonymous with uniform atomic mass unit). 1 Da is defined as 1/12 the mass of a free carbon-12 atom at rest in the ground state.

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The atomic mass is the weighted average of the individual isotopic masses:

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To know more atomic mass please click here : brainly.com/question/338808

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4 0
1 year ago
2 H2 + O2= 2 H2O
AVprozaik [17]

Answer:

the answer is 4.0moles

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3 years ago
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