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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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An essential utensil for various tasks from cleaning vegatables to training pasta ir tin contents​
zavuch27 [327]

Correct question: A tool used for vegetable strainer,it is essential for various tasks from cleaning vegetables to straining pasta or tin contents.

Answer: The tool is called COLANDER.

Explanation:

In the kitchen, there are different types of equipments and utensils which makes work easier and faster. Examples of such equipment/ utensils includes:

--> graters,

--> cutleries ( spoon, fork, knife)

--> colanders

--> Pots

--> Blenders

These utensils are made up of rubber, plastics, wood, ceramics and stainless steel.

A Colander is an important kitchen utensil, a type of strainer with perforated holes. The holes allows fluid to drain leaving behind the solid part. It is usually bowl - shaped. It helps in performing the following roles in the kitchen:

--> cleaning vegetables

--> straining of pasta

--> straining of tin contents

Colanders are usually made of stainless steel, plastics and ceramics.

4 0
3 years ago
Bromine is one of only two elements that is a liquid at room temperature. Bromine has a heat of vaporization of 30.91 kJ/mol and
oksian1 [2.3K]

Answer:

I hope this helps

Explanation:

4 0
3 years ago
Read 2 more answers
The first step in HNO3 production is the catalyzed oxidation of NH3. Without a catalyst, a different reaction predominates:
alexira [117]

Answer:

Kc = 6x10⁻⁶

Explanation:

For the reaction:

4NH₃(g) + 3O₂(g) ⇄ 2N₂(g) + 6H₂O(g)

Kc is defined as:

Kc =[N₂]² [H₂O]⁶ / [NH₃]⁴ [O₂]³

The equilibrium concentrations of the gases is -Because volume of the container is 1.00L-:

[N₂] = 2X = 1.96x10⁻³; <em>X = 9.8x10⁻⁴</em>

[H₂O] = 6X; 6ₓ9.8x10⁻⁴ = 5.88x10⁻³

[NH₃] = 0.0150M - 4X = 0.01108M

[O₂] = 0.0150M - 3X = 0.01206M

Replacing in Kc expression:

Kc =[1.96x10⁻³]² [5.88x10⁻³]⁶ / [0.01108M]⁴ [0.01206M]³

<h3>Kc = 6x10⁻⁶</h3>

8 0
4 years ago
100.0 g of liquid copper (molar mass 63.546 g/mol; melting point 1358 K; density 8.02 g/mL) is placed in a rigid container of vo
gtnhenbr [62]

Answer:

8.912x10^-18

Explanation:

-dn/dt = pANa/2piMRT

100 g = initial copper

Number of moles = 100/63.546

= 1.5736

Mass of copper left = 100-10.0168

= 89.9832

Moles = 89.9832/63.546

= 1.4160

dn = 1.4160-1.5736

= -0.1576

dt = 2 hrs

A = 3.23mm² = 3.23x10^-6

M = 63.546

T = 0.0821

T = 1508k

Na = 6.023x10²³

When we insert all these into the formula above

We get

P = 8.912x10^-18atm

4 0
3 years ago
Conduction happens as energy flows from a warmer object to a cooler object. Which of the following is an example of conduction?
balandron [24]
<span>Warmer air is pushed upward and out of the way by cooler air.</span>
5 0
3 years ago
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