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
Lady_Fox [76]
3 years ago
7

What are 4 other gases in the atmosphere besides oxegen and nitergin?

Chemistry
1 answer:
Levart [38]3 years ago
5 0
Helium, neon,nitrogen and argon
You might be interested in
Chemicals are classified as health hazards when they pose which of the following hazardous effects?
AlexFokin [52]

Answer:

poisoning, breathing problems, skin rashes, allergic reactions, allergic sensitisation, cancer, and other health problems from exposure.

Explanation:

many hazardous chemicals are also classified as dangerous goods.

4 0
2 years ago
As an object falls down the earth, its gravitational potential energy will
Travka [436]

Answer:

a. decrease

Explanation:

6 0
2 years ago
Chalcopyrite is an ore with the composition cufes2. what is the percentage of iron in a 39.6 g sample of this ore? answer in uni
iren2701 [21]
<span>Well it depends on percentage by what, but I'll just assume that it's percentage by mass. For this, we look at the atomic masses of the elements present in the compound. Cu has an atomic mass of 63.546 amu Fe has 55.845 amu and S has 36.065 amu Since there are 2 molecules of Sulfur for each one of Cu and Fe, we'll multiply the Sulfur atomic weight by 2 to obtain 72.13 amu So we have not established the mass of the compound in amus 63.546 + 55.845 + 72.13 = 191.521 That is the atomic mass of Chalcopyrite. and Iron's atomic mass is 55.845 So to get the percentage, or fraction of iron, we take 55.845 / 191.521 Which comes out to 29.15% by mass Mass of the sample is not needed for this calculation, but since the question mentions it I would go ahead and check if the question isn't also asking for the mass of Iron in the sample as well, in which case you just find the 29.15% of 67.7g</span>
5 0
3 years ago
The pH of a solution is 8. Some hydrochloric acid is added to the solution. Suggest the pH of the solution after mixing. pH=....
Molodets [167]

Answer:

Probably around 6 because the ph of hydrochloric acid is 3

Explanation:

3 0
2 years ago
Which adaptation is likely to increase the chances of survival of an animal in a rainforest?
LiRa [457]
I know I think it’s a A

6 0
3 years ago
Other questions:
  • How many electrons are transferred during the formation of one molecule of al2o3?
    8·1 answer
  • What is the mole ratio of D to A in the generic chemical reaction? 4A + B --&gt; C + D​
    7·1 answer
  • Which pair of elements can be used to determine the age of a fossil that is over one billion years old?
    13·3 answers
  • Name two metalloids that are semiconductors
    6·1 answer
  • What term describes matter that is a substance made of different kinds of atoms bonded together?
    11·2 answers
  • Help its due soon i need to get this right to pass the class
    6·2 answers
  • How can substitution mutation affect a person’s traits?
    11·1 answer
  • Identify the variables in the investigation: An investigation was done with an electromagnetic system made from a battery and wi
    10·1 answer
  • How does a generator transform mechanical energy into electrical energy?
    10·1 answer
  • soaps do not work well in hard waters. But they can still be effected it large quantities of soap are added to water. Explain wh
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!