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
stich3 [128]
3 years ago
10

A student calculates the mass of a piece of copper to be 8.3 grams. The actual mass of the copper is 10. grams. What is the perc

ent error? Show your work below. Round your answer to two digits
Chemistry
1 answer:
jok3333 [9.3K]3 years ago
3 0

<u>Answer:</u>

17%

<u>Explanation:</u>

Mass of a piece of copper calculated by student = 8.3 grams

Actual mass of copper = 10 grams

We know the formula for the percent error:

Percentage error = (| experimental value - actual value | / actual value) * 100

So substituting the given values in the above formula:

Percent error = (|8.3 - 10| / 10) * 100 = (1.7/10) * 100 = 17%

You might be interested in
Hydrogen is a gas at a room temperature, but it is found with the alkali metals in group 1 (1A) on the periodic table. Which is
bearhunter [10]
Hydrogen is grouped with the alkali metals because they are grouped based on their properties and behavior, and like the other elements in Group 1 (1A), it only has one valence.
5 0
3 years ago
What may be expected when K &lt; 1.0?
Romashka [77]
The reaction will generally form more reactants than products.
8 0
2 years ago
Read 2 more answers
A 3.140 molal solution of NaCl is prepared. How many grams of NaCl are present in a sample containing 2.314 kg of water?
Mariulka [41]

Answer:

g NaCl = 424.623 g

Explanation:

<em>C</em> NaCl = 3.140 m = 3.140 mol NaCl / Kg solvent

∴ solvent: H2O

∴ mass H2O = 2.314 Kg

mol NaCl:

⇒ mol NaCl = (3.140 mol NaCl/Kg H2O)×(2.314 Kg H2O) = 7.266 mol NaCl

∴ mm NaCl = 58.44 g/mol

⇒ g NaCl = (7.266 mol NaCl)×(58.44 g/mol) = 424.623 g NaCl

5 0
3 years ago
What is the source of the thermal energy that heats our planet's<br> atmosphere?
boyakko [2]
The sun
The heat source for our planet is the sun. Energy from the sun is transferred through space and through the earth's atmosphere to the earth's surface. Since this energy warms the earth's surface and atmosphere, some of it is or becomes heat energy.
5 0
2 years ago
Read 2 more answers
Which chemical or physical change is a endothermic process
Ray Of Light [21]
Melting, vaporization, boiling, and sublimation.
5 0
2 years ago
Read 2 more answers
Other questions:
  • A sample of ammonia gas has a volume of 3213 mL at 11°C and a pressure of 822 torr. What will the volume of the gas be in liters
    15·1 answer
  • How is radar ?????????
    8·1 answer
  • A company issued 6%, 15-year bonds with a face amount of $67 million. The market yield for bonds of similar risk and maturity is
    6·1 answer
  • When NH3(g) reacts with O2(g), the products of the combustion are NO(g) and H2O(g). What volume of O2(g) is required to react wi
    5·1 answer
  • A dioxin-contaminated water source contains 0.083% dioxin by mass. How much dioxin is present in 3.3 L of this water? Assume a d
    8·1 answer
  • Why were Opportunity and Spirit sent to Mars' surface? A. to look for alien life B. to study the rocks and soil C. to study the
    5·2 answers
  • Which symbol represents an atom in the ground state with the most stable valence electron configuration?
    14·2 answers
  • OHC-CH2-CH2-CH2-CHO<br><br> What is the IUPAC name of this compound ?
    14·1 answer
  • In the reaction H2S + NH3 NH4+ + HS–, the two Brönsted-Lowry bases are
    12·2 answers
  • A slide 3.3 m long makes an angle of 32° with the ground. How high is the top of the slide above the ground?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!