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Brrunno [24]
3 years ago
10

A student takes an object with an accepted mass of 120.0 grams and masses it on their

Chemistry
1 answer:
Varvara68 [4.7K]3 years ago
5 0

Answer:

<h2>The answer is 5.25 %</h2>

Explanation:

The percentage error of a certain measurement can be found by using the formula

P(\%) =  \frac{error}{actual \:  \: number}  \times 100\% \\

From the question

actual mass = 120 g

error = 120 - 113.7 = 6.3

The percentage error is

P (\%) =  \frac{6.3}{120}  \times 100 \\  = 5.25

We have the final answer as

<h3>5.25 %</h3>

Hope this helps you

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the volume of a gas is 550 ml at 960 mm hg and 200.0°C. What volume would the pressure of the gas be 830 mm Hg if the temperatur
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Answer:

V₂ = 568.9 mL

Explanation:

Given data:

Volume of gas = 550 mL

Pressure of a gas = 960 mmHg

Temperature = 200.0°C ( 200+273 = 473 K)

Final volume = ?

Final pressure = 830 mmHg

Final temperature = 150°C (150+273 = 423 K)

Solution:

Formula:  

P₁V₁/T₁ = P₂V₂/T₂  

P₁ = Initial pressure

V₁ = Initial volume

T₁ = Initial temperature

P₂ = Final pressure

V₂ = Final volume

T₂ = Final temperature

Solution:

V₂ = P₁V₁ T₂/ T₁ P₂  

V₂ = 960 mmHg × 550 mL × 423 K / 473 K ×830 mmHg

V₂ = 223344000 mL / 392590

V₂ = 568.9 mL

8 0
3 years ago
Consider the hydrate FeSO4 • 7H2O.
DochEvi [55]
The molar mass of the hydrate is 278.06
The molar mass of the anhydrous salt is 151.92
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7 0
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What us true when an ion is formed?
aleksandr82 [10.1K]
B) there is an unequal number of electrons and protons
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A 0.0035 M aqueous solution of a particular compound has pH = 2.46. The compound is (A) a weak base (B) a weak acid (C) a strong
slava [35]

Answer:

(a) A strong acid

Explanation:

We have given the pH of the solution is 2.46

pH=2.46  

So the concentration of H^+=10^{-pH}=10^{-2.46}=0.00346

solution having H+ concentration more than H^+=10^{-7} is acidic

Since in the given solution, H+ concentration is 0.00346 M which is more than 10^{-7}[/tex] so this is an acidic solution

Note-The concentration of H^+ decide the behavior of the solution that is, it is acidic or basic

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Two children bring home a salt-water fish for their new fish tank. The children are eager to put their fish into the new fish ta
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Answer:

b.

Explanation:

. i got it from my smart friend

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3 years ago
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