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
inn [45]
3 years ago
8

An object was measured by a worker as

Chemistry
2 answers:
Lapatulllka [165]3 years ago
8 0

Answer: The percent error in the worker's measurement is 1.38%

Explanation:

Actual length of the object = 14.4 cm

length measured by the worker = 14.6 cm

absolute error in measuring the object = 14.6 - 14. 4 = 0.2 cm

percentage error =\frac{\text {absolute error}}{\text {actual length}}\times 100\%

Putting in the values we get:

percentage error =\frac{0.2}{14.4}\times 100\%=1.38\%

Thus the percent error in the worker's measurement is 1.38%

marusya05 [52]3 years ago
6 0
<h2>Answer - 0.73%</h2>

14.6            .2

          =          

100              x

(Above is proportions I used to get the answer)

x = 0.73% which is the answer.

You might be interested in
A gas has a volume of 5.0 L at a pressure of 50 kPa. What happens to the volume when temperature is held constant and the pressu
Leto [7]

2.0L        is the answer for sure

3 0
3 years ago
When considering free energy change, biochemists usually define a standard state, the biochemical standard state, which is modif
kodGreya [7K]

Answer:

The conditions for biochemical, chemical and both standard states are shown below

Explanation:

Chemical standard state:

Temperature is 25°

Intial concntration of reactants and products is 1M

g. Presurre is 1 atm.

PH7

Biochemical standard state:

Temperature is 25°

PH7

Constant value of Mg2+

Both:

Intial concntration of reactants and products is 1M

g. Presurre is 1 atm.

Temperature is 25°

PH7

7 0
3 years ago
1. 3.311 * 10^24 particles=_______________moles? 2. 126 grams of H2O =______________________moles of moles? whats the answers
Vladimir [108]
1. You can use Avogadro’s number, 6.022x10^23 atoms/mole, to answer this one.

(3.311x10^24/6.022x10^23) = 5.498 moles of substance

2. H2O has a formula weight approximately equal to 18 grams. Dividing the given amount by the formula weight of water will tell us the number of moles present.

126/18 = 7 moles H2O
4 0
3 years ago
a 5.00 L sample of helium expands to 12.0 L at which point the pressure is measured to be 0.720atm. what was the original pressu
stepan [7]

Answer:

The answer to your question is  Pressure 1 = 1.73 atm

Explanation:

Data

Volume 1 = 5 l

Pressure 1 = ?

Volume 2 = 12 l

Pressure 2 = 0.72 atm

Process

To solve this problem use Boyle's law to solve this problem

                 Pressure 1 x Volume 1 = Pressure 2 x Volume 2

-Solve for Pressure 1

                 Pressure 1 = Pressure 2 x Volume 2 / Volume 1

-Substitutiion

                 Pressure 1 = 0.72 x 12 / 5

-Simplification

                Pressure 1 = 8.64/5

-Result

                 Pressure 1 = 1.73 atm

5 0
3 years ago
Does an acid gain or lose a hydrogen cation, H+, during an acid-base reaction?
elena-s [515]

It loses an H+.

The bronsted lowry definition for an acid is that an acid is a H+ donor, or giver. So, during an acid based reaction, an acid would lose a H+.

Lose an H+.

6 0
3 years ago
Other questions:
  • Which of the following is not a organic compound, a -corn oil b -b r o m i n e c -m e t h a n e d- protein
    7·2 answers
  • What is the volume of 70.0 g of ether if density os 0.70 g/mL
    6·1 answer
  • How many molecules are present in the following quantity<br> 0.250 mole of H2O
    12·1 answer
  • What does the ideal gas law describe
    12·2 answers
  • Diborane (B2H6) is a gas at room temperature that forms explosive mixtures with air. It reacts with oxygen according to the foll
    6·1 answer
  • PLEASE HELP!! What happens when nitrogen fills its valence shell?
    9·2 answers
  • Science problem please help
    8·2 answers
  • Elaborate on the nuclear model of the atom. The nuclear model describes the atom as protons and neutrons distributed throughout
    10·2 answers
  • Which statements best describe science? Check all that apply.
    9·2 answers
  • In this project, you will practice calculating work and speed using the proper formula. You will also use a data table to record
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!