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
vitfil [10]
3 years ago
9

If you find the mass of a sample to be 42.1 g and the actual mass is 42.0 g. What wold be the percent error

Chemistry
1 answer:
Ksivusya [100]3 years ago
4 0

Answer:

0.24%

Explanation:

The following data were obtained from the question:

Measured value = 42.1 g

Actual value = 42 g

Percentage error =?

Percentage error can be obtained by using the following formula:

Percentage error = |Measured value – Actual value | / Actual value × 100

With the above formula, we can obtain the percentage error as follow:

Measured value = 42.1 g

Actual value = 42 g

Percentage error =?

Percentage error = |42.1 – 42| / 42 × 100

Percentage error = 0.1/42 × 100

Percentage error = 10/42

Percentage error = 0.24%

Therefore, the percentage error is 0.24%

You might be interested in
What is EDTA , mainly used in Hematology
lord [1]
EDTA stands for ethylenediamine tetra - acetic acid. It is a crystalline acid with a strong tendency to form chelates with metal ions.
3 0
4 years ago
Homes in rural areas where natural gas service is not available often rely on propane to fuel kitchen ranges. The propane is sto
Neporo4naja [7]

Answer:

2666.7 hours

Explanation:

The key to solve this problem is that we are given the propane gas consumed in one hour by giving us the information of the volume consumed at 1 atm, 298 K (25 +273). Using the gas law we can calculate the rate of consumption  of propane per hour, and from here we can calculate its mass and converting it to gallons and finally diving the 400 gallos by this number.

PV = nRT ∴ n = PV/RT

n = 1 atm x 165 L/ (0.08206 Latm/kmol x 298 K ) = 6.75 mol propane

Mass propane :

6.75 mol x 44 g/mol = 296.88 g

convert this to Kg:

296.88 g/ 1000 g/Kg = 0.30 Kg

calculate the volume in liters this represents by dividing by the density:

0.30 Kg / 0.5077 Kg/L =  0.59 L

changing this to gallons

0.59 L x  1 gallon/3.785 L = 0.15 gallon

and finally calculate how many hours the 400 gallons propane tank will deliver

400 gallon/ 0.15 gallon/hr = 2666.7 hr

6 0
3 years ago
Which statement best explains why heating a liquid affects its viscosity?
Artyom0805 [142]

Answer:

A

Explanation:

took test I'm pretty sure and found respond else where

5 0
3 years ago
Read 2 more answers
What happens to a linguist when it releases enough energy
Ugo [173]

Answer:

When a liquid releases enough energy, the liquid will freeze and turn into a solid. Phase changes are what causes one state of matter to turn into another. ... Phase changes occur because of changes in the amount of kinetic energy obtained by the particles that make up a substance. Kinetic energy is the energy of movement.

Explanation:

3 0
3 years ago
Read 2 more answers
Example of neutral outcome ?
Katarina [22]

Answer:

drops a glass cup of water outcome mad parents

Explanation:

Mad pagents mean death no surviva.

4 0
3 years ago
Read 2 more answers
Other questions:
  • How are fossil fuels used in the harvesting of fresh apples from an apple tree?
    15·2 answers
  • Liquid can be converted into a gas select one:
    7·1 answer
  • Calculate the residence time of sodium. Fill in the blanks.
    6·1 answer
  • The _______ energy in a mechanical system is determined by adding the potential and kinetic energy together.
    14·1 answer
  • How many grams of hydrochloric acid will react completely with a block of gold that is 3.2 cm by 3.8 cm by 2.8 cm, if the densit
    8·1 answer
  • Rank these ions according to ionic radius.<br> Rb+<br> Sr2+<br> As3-<br> Se2-<br> Br-
    14·1 answer
  • Define potential energy
    8·1 answer
  • The graph represents the amount of energy in the
    8·1 answer
  • What is a small description of a atom
    7·2 answers
  • What substitute for fossil fuel depletion has been heralded as the solution to the nation’s energy problems??
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!