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
Rufina [12.5K]
4 years ago
6

1. A student in lab measures 4.6 grams of copper for an experiment. Upon further analysis he determines that he should have meas

ured out 4.7 grams of copper. What is his percent error?
Chemistry
1 answer:
Reil [10]4 years ago
4 0

Answer:

2.13\%

Explanation:

Quantity of copper measured by a student = 4.6 grams

Original quantity of copper = 4.7 grams

Error in measurement = Original quantity of copper - Quantity of copper measured by a student  =4.7-4.6=0.1 grams

To find the percent error, apply the following formula:

Percent error = (Error in measurement / Original quantity of copper) × 100

=\frac{0.1}{4.7}(100)=2.13\%

You might be interested in
The mass of a 50-mL volumetric flask is 40.638 g. After adding 15.0 mL of 95% ethanol and adding enough water to complete the vo
Nuetrik [128]

Answer

0.9516 grams / mL (50.00 has 4 sig digs.)

Remark

You have a couple of extraneous numbers there. You don't care about anything except the mass of the flask +  water/alcohol mixture  (88.219 grams). and the mass of the flask (40.638 grams)

Formulas

  • mass water/alcohol mixture = mass of the flask with fluid - mass flask
  • density = mass / volume

Solution

mass water/alcohol mixture = 88.219 - 40.638 = 47.581

  • Volume = 50 mL
  • Density = mass / Volume
  • Density = 47.581/50
  • Density = 0.95162  There are 4 sig digs so the answer should be
  • 0.9516
3 0
4 years ago
Please help! It's chemistry question
SashulF [63]
It looks like it is going by 25's so I would say 22.75 mL
3 0
3 years ago
A block of wood has the mass of 180 grams.it is 10 cm long,6 cm wide and 4 cm thick.what is it’s density?
DochEvi [55]

Answer:

0.75 g/cm³

Explanation:

Given data:

Mass of wooden block =  180 g

Length of block = 10 cm

Width of block = 6 cm

Height or thickness = 4 cm

Density of block = ?

Solution:

Volume of block = height × length × width

Volume of block = 4 cm × 10 cm× 6 cm

Volume of block = 240 cm³

Density of block:

density = mass/ volume

d = 180 g/ 240 cm³

d = 0.75 g/cm³

4 0
3 years ago
Do x-rays travel slower than infrared
OleMash [197]
No, x-rays do not travel slower than infrared radiation or even the opposite. Both are travelling in vacuum therefore they travel at same speed. They differ in the frequency of the electromagnetic waves.
3 0
3 years ago
How do you get hyphen notations?
laiz [17]

Answer:

In hyphen notation, the mass number is written after the name of the element. For example, in isotopic notation, the isotope of carbon that has a mass number of twelve would be represented as 12C . In hyphen notation, it would be written as carbon-12.

Explanation:

lol just took the question and looked it up online this was the first thing that i saw if its not correct im sorry

6 0
3 years ago
Other questions:
  • Calculate the heat change in calories for melting 65 g of ice at 0 ∘c.
    8·1 answer
  • Compare and contrast Aufbau principle and the Pauli exclusion principle.
    9·1 answer
  • At the normal melting point of NaCl, 801 degrees C, its enthalpy of fusion is 28.8 kJ / mol. The density of the solid is 2.165 g
    10·1 answer
  • How many moles of hydrogen gas would be needed to react with excess carbon dioxide to produce 99.1 moles of water vapor?
    14·1 answer
  • In each pair of statements, choose the example that is more reliable.
    15·2 answers
  • 7. Elements in group one are called.​
    9·1 answer
  • Why do you think we have different seasons?
    15·1 answer
  • Explain intermolecular forces cause water molecules to stick to a material like a glass pitcher​
    11·1 answer
  • Which of the following best describes a hypothesis?
    10·2 answers
  • How do i know if a reaction is exo/endothermic?? help please.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!