1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Anna007 [38]
3 years ago
13

A student reports the density of an article to be 1.92 g/mL. The accepted value of density is 1.89 g/mL. Calculate the student's

percent error.
Chemistry
1 answer:
ipn [44]3 years ago
6 0

Answer:

1.59%.

Explanation:

The following data were obtained from the question:

Measured density = 1.92 g/mL

Accepted density = 1.89 g/mL

Percentage error =...?

The percentage error error of the student can be obtained as follow:

Percentage error = |Measured density – Accepted density |/Accepted density × 100

Percentage error = |1.92 – 1.89|/1.89 × 100

Percentage error = 0.03/1.89 × 100

Percentage error = 1.59%

Therefore, the student percentage error is 1.59%

You might be interested in
Three common gaseous compounds of nitrogen and oxygen of different elementary composition are known: (A) laughing gas containing
Ede4ka [16]

Answer:

Please find how these data prove the law of multiple proportions below

Explanation:

The law of multiple proportions was proposed by an English chemist called John Dalton. The law states that when two elements combine and to form more than one compound. The weights/masses of the second element in the two compounds, which combines with a fixed ratio of the first element, is in a simple whole number ratio.

In this question, Nitrogen is said to combine with oxygen to give three different compounds as follows:

A) laughing gas containing 63.65% nitrogen i.e. 0.6365g

This means that the mass of oxygen will be (1-0.6365) = 0.3635g

B) colorless gas containing 46.68% nitrogen i.e. 0.4668g

This means that the mass of oxygen will be 0.5332g

C) brown toxic gas containing 30.45% nitrogen i.e. 0.3045g

This means that the mass of oxygen will be 0.6955g

The ratios of oxygen in the three compounds is therefore:

0.3635: 0.5332: 0.6955

Divide this ratio by the smallest number (0.3635)

0.3635/0.3635 = 1

0.5332/0.3635 = 1.467

0.6955/0.3635 = 1.913

Multiply this ratio by 2, we have:

2: 2.9 : 3.8

Hence, the simple whole number ratio is 2:3:4.

This proves the law of multiple proportions that oxygen is in simple whole number ratio in the three different compounds.

4 0
3 years ago
The transfer of thermal energy for a warmer object too a cooler one.<br><br><br> 10 points
erica [24]

Answer: The movement of heat from a warmer object to a cooler one is called heat transfer

Explanation:

3 0
3 years ago
A recently depolarized area of a cell membrane cannot generate an action potential because of the
marysya [2.9K]
The refractory period makes the cell rest. In this period, the cell becomes able to depolarize again by collecting ions.
4 0
3 years ago
Read 2 more answers
Which sample of matter has a crystal structure ?
Pepsi [2]
A crystal<span> or </span>crystalline solid<span> is a </span>solid<span> material whose constituents (such as </span>atoms<span>, </span>molecules<span> or </span>ions<span>) are arranged in a highly ordered microscopic structure, forming a </span>crystal lattice<span> that extends in all directions.</span><span> In addition, macroscopic </span>single crystals<span> are usually identifiable by their geometrical shape, consisting of flat </span>faces<span> with specific, characteristic orientations. example of it are ice, rocks , organigenic crystals</span>
7 0
2 years ago
No attempt was made to test sodium with hydrochloric<br> acid. Why not?
Fiesta28 [93]

Answer:

the reaction is violent and quick

Explanation:

3 0
2 years ago
Other questions:
  • This is the speed at which molecules or atoms move dependent on temperature and state of matter.
    14·2 answers
  • Which drug treats heartburn by neutralizing the acidity of the stomach by combining with hydrochloric acid (hcl) and increasing
    15·1 answer
  • This lab question is: How can you distinguish a physical change from a chemical change?
    11·1 answer
  • Which one of these is not an example of intercellular communication?
    12·1 answer
  • A sample of 0.900 mol N2O is placed in a sealed
    12·1 answer
  • How many grams of water can be cooled from 33 ∘c to 15 ∘c by the evaporation of 50 g of water? (the heat of vaporization of wate
    8·1 answer
  • What type of solution is formed when steam from boiling water evaporates into the air
    11·1 answer
  • Three most common alkali metals include:
    13·2 answers
  • Uniformitarianism states that the geologic processes occurring in the past are the same processes that are occurring today.
    8·2 answers
  • How does burning fossil fuels cause an increase of carbon in the air?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!