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
nirvana33 [79]
1 year ago
15

A sample of a compound made entirely from copper and oxygen was found to have a total mass of 0.143 g the mass of copper in the

compound was found to be 0.1271 g calculate the mass of oxygen in the same. Also, Calculate the number of moles of oxygen in the sample. Please help!! Thank you in advance.
Chemistry
1 answer:
tensa zangetsu [6.8K]1 year ago
6 0

Mass of Oxygen: 0.0159 grams

Moles of Oxygen: 9.94x10^-4

To find the mass of oxygen, subtract the mass of copper from the total mass.

0.143-0.1271=0.0159

There are 0.0159 grams of Oxygen.

To find how many moles there are, divide the given amount of oxygen by the molar mass (atomic mass) of oxygen because that mass is the same as one mole of oxygen.

Molar mass of Oxygen: 16.00

0.0159/16.00=9.94*10^{-4}

There are 9.94*10^-4 moles of Oxygen.

You might be interested in
identify the part of the slow carbon cycle in whitch the total amount of carbon is most likely decreasing and explain why this d
Westkost [7]

Answer:

i just had gthe sme question looked it up and got it WRONG

Explanation:

sorry i ont have a clue

3 0
2 years ago
which of the following true? a_volcanoes and earthquakes often near the plate boundaries. b_volcanoes occur whereve there are ta
pentagon [3]

The answer is A. Volcanoes and earthquakes often occur near place boundaries. Volcanoes are exit points for heat from the Earth's core. And Earthquakes are caused by the tectonic places colliding along another one. For example one tectonic plate would be slowly moving south, and another next to it could collide with the South-going plate while going North, and that is what causes Earthquakes.

4 0
3 years ago
Read 2 more answers
Calculate the molar solubility of silver chloride in 0.15 M sodium chloride.
Alex777 [14]

Answer:

S = 1.1 × 10⁻⁹ M

Explanation:

NaCl is a strong electrolyte that dissociates according to the following expression.

NaCl(aq) → Na⁺(aq) + Cl⁻(aq)

Given the concentration of NaCl is 0.15 M, the concentration of Cl⁻ will be 0.15 M.

We can find the molar solubility (S) of AgCl using an ICE chart.

      AgCl(s) ⇄ Ag⁺(aq) + Cl⁻(aq)

I                         0            0.15

C                      +S              +S

E                        S            0.15+S

The solubility product (Ksp) is:

Ksp = 1.6 × 10⁻¹⁰ = [Ag⁺].[Cl⁻] = S (0.15 + S)

If we solve the quadratic equation, the positive result is S = 1.1 × 10⁻⁹ M

6 0
2 years ago
Read 2 more answers
Anyone know how to hide a body asking for a friend
Wittaler [7]
Throw it in the ocean lol
4 0
2 years ago
Compare Rutherford’s model of the atom with Bohr’s model.
BlackZzzverrR [31]

it described a nucleus surrounded by a large volume of space.

8 0
3 years ago
Other questions:
  • What is the answer??
    8·2 answers
  • Disccuss what happens to copper in photochromic lenses from a redox perspective.
    8·1 answer
  • What is the predominant intermolecular force in the liquid state of each of these compounds: water (h2o), carbon tetrafluoride (
    7·2 answers
  • What the name of th compound Mg (NO3)2
    12·1 answer
  • Consider these elements: N, Mg, O, F, Al. a. Write the electron configuration for each element. b. Arrange the elements in order
    12·1 answer
  • The conversion of mass into huge amounts of energy is the basis of __________.
    14·2 answers
  • What type of bond is between sodium and oxygen​
    13·2 answers
  • Consider the following chemical reaction:
    5·1 answer
  • What is the balanced net ionic reaction for the following -<br>CaCl2 + Na2S --&gt; NaCl + CaS?​
    11·1 answer
  • How can animal fossils help us understand the earth​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!