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krek1111 [17]
3 years ago
11

Determine how many moles of Ba(OH)2 are required to completely neutralize 0.427 mole of HC2H3O2.

Chemistry
1 answer:
Sergio039 [100]3 years ago
4 0
.2135 mol of Ba(OH)2 are needed to neutralize .427 mol of 2HC2H3O2
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What is the percent composition of the u.s quarter, which has the mass of 5.670g
Vitek1552 [10]
The percent composition of each element can be calculated as follows:
% composition = (mass of element / total mass) * 100

The total mass of the quarter is given to be 5.670 grams
Mass of Cu = 5.198 grams
Mass of Ni = 0.472 grams

Substitute in the above equation to get the mass percentage of each element as follows:
% of Cu = (5.198/5.670) * 100 = 91.675%
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3 years ago
The accepted value for the molar volume of a gas is 22.4 L. Sarah's experimental data indicated that a mole of a gas had a volum
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Answer:

Percent error = 12.5%

Explanation:

In a measurement you can find percent error following the formula:

Percent error = |Measured value - Accepted Value| / Acepted value * 100

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Replacing:

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The __________ system is made up of the nose, pharynx, trachea, lungs, bronchi, and alveoli. *
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Respiratory system is made of that
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g In science, we like to develop explanations that we can use to predict the outcome of events and phenomena. Try to develop an
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Answer:

See explanation

Explanation:

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Hence the volume NaOH that needs to be added to the beaker containing HCl to cause a colour change is the volume of NaOH that is just enough to completely neutralize the HCl solution.

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3 years ago
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