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
Paladinen [302]
3 years ago
15

Which pair are classified as chemical substances? Pick two.

Chemistry
1 answer:
maria [59]3 years ago
8 0
Elements and compounds. This is because in solutions and mixtures the substances are not bonded to each other or pure, you can separate and purify substances in solutions and mixtures (via techniques such as distillation, filtering) but you cannot separate compounds as they are bonded together.
You might be interested in
What are some of the body external defenses
tekilochka [14]
<span>these include your skin, tears, mucus, cilia, stomach acid, urine flow, 'friendly' bacteria and white blood cells called neutrophils.</span>
4 0
3 years ago
Solve for y in the following problem: 5.3 x 10- (y)(2y)
weqwewe [10]

Answer:

The value of y = 5.1478

Explanation:

The linear equation is an equation obtained when a linear polynomial is equated to zero. When the solution obtained on solving the equation is substituted in the equation in place of the unknown, the equation gets satisfied.

The given equation: 5.3 x 10- (y)(2y) = 0

⇒ 53 - 2y² = 0

⇒ 2y² = 53

⇒ y² = 53 ÷ 2 = 26.5

⇒ y = √26.5 = 5.1478

8 0
3 years ago
Lewis is making a model of the Earth-Moon system. He knows that the diameter of the Earth is about four times greater than the d
Leno4ka [110]
D. this is the correct answer because the question is showing a comparison of sizes rather than the actual sizes which eliminates B. A and C have no relevance.
3 0
3 years ago
Read 2 more answers
Enter the net ionic equation for this reaction. Express your answer as a net ionic equation. Identify all of the phases in your
Lisa [10]

Answer:

2H+(aq) + 2OH-(aq) → 2H2O(l)

Explanation:

Step 1: The balanced equation

2HCl(aq)+Ca(OH)2(aq) → 2H2O(l)+CaCl2(aq)

This equation is balanced, we do not have the change any coefficients.

Step 2: The netionic equation

The net ionic equation, for which spectator ions are omitted - remember that spectator ions are those ions located on both sides of the equation - will.

2H+(aq) + 2Cl-(aq) + Ca^2+(aq) + 2OH-(aq) → 2H2O(l) + Ca^2+(aq) + 2Cl-(aq)

After canceling those spectator ions in both side, look like this:

2H+(aq) + 2OH-(aq) → 2H2O(l)

6 0
3 years ago
What is the "reproductive system"
bija089 [108]

Answer: The reproductive system of an organism, also known as the genital system, is the biological system made up of all the anatomical organs involved in sexual reproduction

OMG LOL

6 0
2 years ago
Read 2 more answers
Other questions:
  • When using science to investigate physical phenomena, which characteristic of the event must exist?
    6·1 answer
  • If a sample of butene (C4H8) that has a mass of 259.9 g is combusted in excess oxygen, what is the mass of CO2 that is produced?
    13·1 answer
  • Calculate gram formula mass of LiCl(s)
    9·1 answer
  • A particular element has the following set of properties:
    12·1 answer
  • Calculate the concentration of a solution that has 6.7 moles in a volume of 0.6 liters.
    13·1 answer
  • 10 m3 of carbon dioxide is originally at a temperature of 50 °C and pressure of 10 kPa. Determine the new density and volume of
    13·1 answer
  • 2.5 gm of a sample of Nahco3 when strongly.
    6·1 answer
  • PLEASE I NEED HELP I WILL GIVE YOU BRAINLIST
    11·1 answer
  • What mass of HCL is consumed by the reaction of 5. 0 of magnesium?
    8·1 answer
  • A solution has a hydrogen ion concentration of [H+] = 4.6 x 10 -3 M.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!