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
Lisa [10]
3 years ago
7

Helium is classified as a(n)?

Chemistry
2 answers:
Arlecino [84]3 years ago
7 0
Alkaline earth metal
Fittoniya [83]3 years ago
5 0

Answer:

NOBLE GAS

Explanation:

Look At The Table Of Elements

You might be interested in
Arrange ZN HG CU AU metals in order of decreasing activity with the most active first
Andrej [43]
  • AU ZN CU HG

Explanation:

hope it helps you

6 0
3 years ago
How do you determine the theoretical number of electrons in an energy level?
Makovka662 [10]
I'm pretty sure the formula is 2n(/\) 2
3 0
3 years ago
Given the following reaction:
mojhsa [17]

Answer:

Option D. 17.5

Explanation:

Equiibrium is: CO + 2H₂  ⇄  CH₃OH

1 mol of CO is in equibrium with 2 moles of hydrogen in order to make, methanol.

Initially we have 0.42 moles of CO and 0.42 moles of H₂

If 0.29 moles of CO remained, (0.42 - 0.29) = 0.13 moles have reacted.

So in the equilibrium we may have:

0.29 moles of CO, and (0.42 - 0.13 . 2) = 0.16 moles of H₂

Ratio is 1:2, if 0.13 moles of CO haved reacted, (0.13 . 2) moles have reacted of hydrogen

Finally 0.13 moles of methanol, are found after the equilibrium reach the end.

Let's make expression for KC: [Methanol] / [CO] . [Hydrogen]²

0.13 / (0.29 . 0.16²)

Kc = 17.5

4 0
3 years ago
Which is an example of making a quantitative observation?
Zolol [24]
Answer:
measuring the mass of metal used in a reaction
3 0
3 years ago
Read 2 more answers
Which statement best describes nuclear binding energy
tia_tia [17]
When the protons and neutrons combine to form a nucleus, the mass that disappears
6 0
4 years ago
Other questions:
  • ..
    13·2 answers
  • Describe the observations that might be seen when a metal reacts with an acid?
    11·1 answer
  • The nitrogen atoms in N2 participate in multiple bonding whereas those in hydrazine, N2H4, do not. a.) Draw Lewis structures for
    8·1 answer
  • Complete the sentence.
    6·2 answers
  • How does the brain receive information from the light entering the eye?
    13·1 answer
  • 5) When heated in a flame, the element Indium emits electromagnetic radiation with a distinctive indigo blue
    5·1 answer
  • How does circulation help maintain body temperature?
    7·1 answer
  • Positivities and negativity of computer creativity<br><br>answerrr BRAINLIEST PLS FAST
    5·2 answers
  • What are the two different parts of the eggbeater kick? In swimming
    7·1 answer
  • List two additional questions to address climate change.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!