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
Diano4ka-milaya [45]
3 years ago
12

A student was asked to separate a mixture of chemicals. The weight of each component within the mixture is as follows: potassium

bromide 2.53g and 0.760g barium sulfate. What is the percentage of barium sulfate within the mixture?
Chemistry
1 answer:
hram777 [196]3 years ago
6 0

Answer:

a

Explanation:

f

You might be interested in
The half-life of plutonium-239 is 24300. If a nuclear bomb released 8kg of this isotope, how many years would pass before the am
Aneli [31]

Answer:

= 72900 years

Explanation:

  • The half-life is the time taken by a radioactive material to decay by half the original amount.
  • The half-life of plutonium-239 is 24300 years which means it takes 24300 years to decay by half the original amount.

To calculate the time taken for a mass of 8 kg to decay to 1 kg we use;

New mass = Original mass x (1/2) ^n, where n is the number of half-lives

Therefore;

1 kg = 8 kg × (1/2)^n

1/8 = (1/2)^n

solving for n;

n =3

Therefore;

Time = 3 × 24300 years

          = 72900 years

It will, therefore, take 72900 years for 8 kg of plutonium-239 to decay to 1 kg.

3 0
3 years ago
Which elements are considered metals? Non-metals? Metalloids?
kolbaska11 [484]

The answer is in the photo.

3 0
3 years ago
Points)<br> Determine the molar mass of NaCl (the solute) in a 0.1M aqueous solution of NaCl
nalin [4]

Answer:

  58.443 g/mol

Explanation:

The molar mass of NaCl is the sum of the molar masses of the individual atoms:

  Na: 22.989770 g/mol

  Cl: 35.453 g/mol

The total molar mass is ...

  NaCl: 58.443 g/mol

__

The molar mass does not depend on whether the material is in solution or in any other form.

4 0
3 years ago
Name a property copper has?
Ilya [14]

Answer:

Explanation:

It is malleable, ductile, and a good conductor of electricity and heat.

4 0
2 years ago
Why is there a change in energy during chemical reactions?(1 point)
Firdavs [7]

Energy is released by the formation of chemical bonds, and energy is

absorbed when the bonds are broken.

<h3>What is a chemical reaction?</h3>

A chemical reaction involves the formation of new compounds from

reactants . It involves the formation and breaking of bonds in the

elements.

Energy is released by the formation of chemical bonds and this type of

reaction is referred to as exothermic while energy is absorbed when the

bonds are broken and is referred to as an endothermic reaction.

Read more about Chemical reaction here brainly.com/question/16416932

8 0
3 years ago
Read 2 more answers
Other questions:
  • Hi, May I have Chem help please? Please Keep the answer as simple as possible because it is a for a bcr.
    7·1 answer
  • Can you explain and read this equation 2Mg + 02 —— 2MgO
    14·2 answers
  • A sample of sugar (C12H22O11) contains 1.505 × 1023 molecules of sugar. How many moles of sugar are present in the sample?
    14·1 answer
  • Calculate the volume the gas will occupy if the pressure is increased to 1.89 atmatm while the temperature is held constant. Exp
    6·1 answer
  • Which could cause topsoil to be lost? a) wind and water erosion b)lack of use c)compaction d)desertification
    5·2 answers
  • Which organ is NOT a part of the excretory system? *
    13·2 answers
  • A skier is skiing down a slope on the mountain. Is the mechanical energy conserved? Why or why not?
    14·2 answers
  • 31. Use the equation given below to answer the following question: If 755 kJ of heat was absorbed, what mass of carbon dioxide r
    8·1 answer
  • Give one difference between molecule of an element and molecule of a compound with examples​
    9·1 answer
  • HELPP ME ASAP<br> What is the percent composition of Nitrogen in dinitrogen trioxide?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!