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
Digiron [165]
3 years ago
12

Which of the following does not represent a compound? NaCl N20 CO2 O2

Chemistry
1 answer:
gavmur [86]3 years ago
7 0

Answer:

O2

Explanation:

A compound is made of two or more chemical elements. With that in mind, O2 is only one element: oxygen.

You might be interested in
C3H8 + 5 O2 → 3 CO2 + 4 H2O<br> What is the number of atoms on each side of the equation?
Roman55 [17]

Answer: 1.2642*10²⁵ on both sides

Explanation:

First check how many moles are there on each side.
Since this is a balanaced equataion the number of moles on each side is the same thus the number of atoms is also same on both sides

There are 3 moles of carbon and 8 moles of hydrogen in C3H8
and 2 moles of oxygen in O2 but there 5 infront so 2*5 is 10
Number of moles on the right is 10+8+3 = 21

Now use Avogrado's constant

21 Moles* (6.02*10²³)/Mol
= 21*6.02*10²³

= 1.2642*10²⁵

6 0
2 years ago
Read 2 more answers
- Standard state refers to
yulyashka [42]

Answer: The standard state refers to 1 atm and 25^{o}C.

Explanation:

It is known that a chemical/substance can either be present in a solid, liquid or gaseous state.

So, when the phase of a substance like solid, liquid or gas is present at 1 atmosphere pressure and at a temperature of 25^{o}C then it known as standard state of substance.

Thus, we can conclude that standard state refers to 1 atm and 25^{o}C.

4 0
3 years ago
Based on what you’ve determined regarding one mole of sand and one mole of water, which statements must be correct? Select all t
Igoryamba

Answer:

-The mole is appropriate only for counting things that are very small.

-One mole is a very large number of something.

-A molecule of water is much smaller than a grain of sand.

Explanation:

8 0
2 years ago
Which of the following terms describes an accumulation of rocky, sandy, or clayey material deposited at the end of a glacier?
OLEGan [10]

Answer:

Option (D)

Explanation:

<u>Eskers are the long ridges that are comprised of rocks, sands and clay particles and are deposited towards the end of the glaciers</u>. These are fluvioglacial depositional features. These particles are exposed after the glaciers recede. These ridges are formed parallel to the earlier flow direction of ice. The size of eskers is generally smaller as it carries smaller particles such as rocks, sands, and gravels, in comparison to the different type of moraines. It is because the flow velocity decreases as the glaciers melt. So, these eskers are formed at the end of the glaciers.

Thus, the correct answer is option (D).

3 0
3 years ago
An organism that has been thriving, has died. Which of the following is NOT a cause of its demise? Question 6 options: appropria
pashok25 [27]

I would say soil would be your best option. This is because out of all these, soil collects a lot of different substances and could have easily absorbed something that then killed the organism.

6 0
3 years ago
Other questions:
  • What is the molarity of a solution of 17.0 g of nh4br in enough h2o to make 158 ml of solution? answer in units of m?
    12·1 answer
  • Hydrochloric acid reacts with calcium to form hydrogen and calcium chloride. If 100 grams of hydrochloric acid reacts with 100 g
    10·2 answers
  • How do you determine the difference between a living specimen and a nonliving one?
    7·1 answer
  • Give the correct thermochemical equations for a (cacl2+h2o) pack and (nh4no3+h2o) pack.
    9·1 answer
  • Part A:
    7·2 answers
  • The boiling point and distillation temperature of a substance are the same. true false
    13·1 answer
  • I need help please, thanks!
    9·1 answer
  • 3x - 12 = 7x + 8 <br> -4x - 12 = 8 <br> -4x - 20 <br> X = -5
    12·1 answer
  • A paint chip is placed in ethanol and curls what type of paint is it
    5·1 answer
  • Magnesium reacts with sulfuric acid in an exothermique reaction. Write an equation for the reaction. Include state symbols in yo
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!