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
svetlana [45]
3 years ago
7

Which element is a noble gas? A. H B. Ko C. Xx D. Ar E. O

Chemistry
2 answers:
Leni [432]3 years ago
6 0

Answer:

bnklknnjjkjjnnbbbbbbn

oee [108]3 years ago
3 0

Answer:

A. H

H

Explanation:

Hope it helps :)

cggvgg

You might be interested in
In which of the following locations are bacteria often found?
djyliett [7]

Answer:  

in the air and soil  

in drinking water

on and inside the human body

Explanation: Hope that helps

7 0
3 years ago
Write the products of photosystem i and photosystem ii
Margaret [11]
<span>ATP,O2 and NADPH are the </span>products<span>. H2O,NADP,ADP and Pi are the reactants. acts as an electron carrier between the cytochrome b6f and </span>photosystem 1 (PS1) complexes in the photosynthetic electron-transfer chain.

Photosystem II<span> (or water-plastoquinone oxidoreductase) is the first protein complex in the light-dependent reactions of oxygenic photosynthesis. It is located in the thylakoid membrane of plants, algae, and cyanobacteria.</span>
3 0
3 years ago
Read 2 more answers
3)<br>0.09 moles of sodium sulfate in 12 mL of solution.<br>​
adelina 88 [10]

Answer:

7.5 M

Explanation:

In order to find a solution's molar concentration, or molarity, you need to determine how many moles of solute, which in your case is sodium sulfate,  

Na

2

SO

4

, you get in one liter of solution.

That is how molarity was defined -- the number of moles of solute in one liter of solution.

So, you know that you have  

0.090

moles of solute in  

12 mL

of solution. Your goal here will be to scale up this solution by using this information as a conversion factor to help you determine the number of moles of solute present in

6 0
3 years ago
It is possible for a substance to exist in all forms of matter give an example
bazaltina [42]
Yes: water can exist in solid (ice), liquid (water), and gas (water vapor) forms.
4 0
4 years ago
I really need help plz I’ll give 40 points
polet [3.4K]
I’m pretty sure it’s b
4 0
3 years ago
Read 2 more answers
Other questions:
  • The Haber process is used to make ammonia, which is an important source of nitrogen that can be metabolized by plants. Using the
    12·1 answer
  • Murcury is the only metal at room temperature. Its density is 13.6g/mL. How many grams of murcury will occupy a volume of 95.8mL
    6·1 answer
  • A crystallographer measures the horizontal spacing between molecules in a crystal. The spacing is 10.59 nm . What is the total w
    8·1 answer
  • What happens to the atomic radius when an electron is gained
    10·2 answers
  • A _____ is a classification of an element based on its current status, position, or use in a document.​
    13·1 answer
  • How many miles of NaOH will completely react with 10.0 mL of 1.0 M HCl?
    10·2 answers
  • Convert 1.25 atm to kPa
    12·1 answer
  • 1. If we used 0.0100 moles of K2CO3, how many moles of SrCO3 can be expected to form?​
    13·1 answer
  • Atoms are composed of subtomatic particles called
    8·1 answer
  • What is the mass of one mole of hydrogen molecules?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!