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AveGali [126]
4 years ago
5

In an experiment, a student estimates the acceleration due to gravity is 9.31 m/s2. The actual value is 9.8 m/s2. What is the st

udent's percent error
Chemistry
2 answers:
salantis [7]4 years ago
7 0

Answer:

The percent error of student is -5 %.

Explanation:

Given data:

measured value = 9.31 m/s²

actual value = 9.8 m/s²

percent error = ?

Formula:

% error = (measured value - actual value / actual value ) × 100

% error = (9.31 m/s² - 9.8 m/s² / 9.8 m/s²) × 100

% error = (-0.49 m/s² / 9.8 m/s²) × 100

% error = -0.05 × 100

% error = -5

Firlakuza [10]4 years ago
6 0

Answer:

The answer is 5% error rate

Explanation:

Hello!

Let's solve this!

The data we have are:

Actual Gravity = 9.8m / s2

measured severity = 9.31m / s2

The% error is measured with the following formula:

% error = ((actual value-measured value) / actual value) * 100

% error = (9.8-9.31) /9.8) * 100

 

% error = 5%

The answer is 5% error rate

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Margarita [4]

Answer:

Percentage composition = 14.583%

Explanation:

In chemistry, the emprical formular of a compound is the simplest formular a compound can have. It shows the simplest ratio in which the elements are combined in the compound.

Percentage composition by mass of Nitrogen

Nitrogen = 14g/mol

In one mole of the compound;

Mass of Nitrogen = 1 mol * 14g/mol = 14g

Mass of compound = 1 mol * 96.0 g/mol = 96

Percentage composition of Nitrogen = (Mass of Nitrogen /  Mass of compound) * 100

percentage composition = 14/96   * 100

Percentage composition = 0.14583 * 100

Percentage composition = 14.583%

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3 years ago
How is good at electron configurations in chemistry?
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Answer:

explanation

Explanation:

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2 years ago
If a substance has a temperature of 273 kelvins, what is its temperature in degrees celsius?
kipiarov [429]
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Why can't methanol, CH3OH, be used as a solvent for sodium amide, NaNH2? Sodium amide is nonpolar and methanol is polar. Sodium
Elodia [21]

Answer: sodium amide undergoes an acid -base reaction

Explanation:

sodium amide is a ionic compound and basically exists as sodium cation and amide anion. Amide anion is highly basic in nature and hence as soon as  there is amide anion generated in the solution , Due to its very pronounced acidity it very quickly abstracts the slightly acidic proton available on methanol.

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Hence sodium amide reacts with methanol and abstracts its only acidic proton and form ammonia and sodium Methoxide.

Hence the 3rd statement is a corrects statement.

So we cannot use methanol for sodium amide because sodium amide itself would react with methanol and the inherent molecular natur of sodium amide would then change.

The 1st and 2nd statements both are incorrect because both the compounds methanol as well as sodium amide have dipole moments and hence are polar molecules.

The 4th statement is also incorrect as both the molecules have dipole moment and hence there would be ion-dipole forces operating between them.

The following reaction occurs:

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4 0
3 years ago
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