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
Ulleksa [173]
2 years ago
6

Calculate the percentage of copper in copper oxide

Chemistry
1 answer:
WITCHER [35]2 years ago
5 0

Well, look up the atomic weights of copper and oxygen; add them appropriately; divide the total for the copper by the total for the molecule; then multiply by 100 to get it as a percentage.

You might be interested in
The main function of a producer in an ecosystem is
jok3333 [9.3K]

Answer:

A producer is a plant or fungi but it mainly is a organism that produces food for a primary consumer

Explanation:

5 0
3 years ago
8. How many atoms of cobalt are in a 0.39 mole sample of CoC
Debora [2.8K]

8.98

×

N

A

 

cobalt atoms

Explanation:

N

A

,

Avogadro's number

specifies  

6.0221

×

10

23

individual particles. It is simply another collective number like a dozen, or a score, or a gross.  

N

A

has the property that  

6.0221

×

10

23

individual cobalt atoms has a mass of  

58.93

⋅

g

. How did I know that? Did I have it memorized?

So the quantity is  

≈

 

54

×

10

23

cobalt atoms.

3 0
2 years ago
Two substances A and B, initially at different temperatures, are thermally isolated from their surroundings and allowed to come
Elden [556K]

Answer:

B

Explanation:

For solving this we need a heat balance

Q_{a} = Q_{b}\\m_{a}*C_{a}*\Delta T_{a} = m_{b}*C_{b}*\Delta T_{b}

By changing the corresponding relations, we have

m_{a}*C_{a}*\Delta T_{a} = \frac{1}{2}m_{a}*4C_{a}*\Delta T_{b} \\\\\\

By cancelling similar factor, we obtain

\Delta T_{a} = 2 \Delta T_{b}\\\frac{\Delta T_{a}}{\Delta T_{b}} = 2\\

Which means that the change of temperature in A is twice the change of B

3 0
3 years ago
The image shows a molecular model of a compound using balls and sticks. Each ball is an atom and each stick is a bond. If you we
Zielflug [23.3K]
Hi , the answers must be part B
3 0
3 years ago
Read 2 more answers
What wavelength of radiation has photons of energy 6.36×10−19 J ?
puteri [66]
I think it’s 44.6 J, but I’m not to sure so hoped this helped /:).
6 0
3 years ago
Other questions:
  • A sample of carbon -12 has a mass of 6.00 g. How many atoms of carbon -12 are in the sample ?
    7·1 answer
  • a scientist uses 68 grams of CaCo3 to prepare 1.5 liters of solution. what is the molarity of this solution?
    14·1 answer
  • What is the density of 19 milliliters of a liquid substance with a mass of 6.05 grams?<br>​
    8·1 answer
  • A horizontal pipe 15 cm in diameter and 4 m long is buried in the earth at a depth of 20 cm. The pipe-wall temperature is 75 deg
    9·1 answer
  • Sarah cycles 30 mi to her grandmother's house at a steady speed of 10 mph. If she leaves home at 2:00 PM what time will she arri
    9·1 answer
  • Consider the following reaction to generate hydrogen gas: Zn(s) + 2 HCl(aq) → ZnCl2(aq) + H2(g) The hydrogen gas is collected by
    9·1 answer
  • 61. Write formulas for the compounds:
    8·1 answer
  • 2. Scientist use ________ to measure the distance between stars.
    15·1 answer
  • What would be the result on the Insect population if the Bats and Mice were removed?
    5·1 answer
  • Really need help on this thing plz someone... help number 2 and 3:(
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!