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
bulgar [2K]
3 years ago
7

Is oxygen an element?

Chemistry
1 answer:
laiz [17]3 years ago
7 0
Yes oxygen is an element it is
the 8th element 
the second period
16th group
noble gas configuration [He]2s^22p^4
You might be interested in
!!HELP ASAP!!What is an electrostatic force?
lubasha [3.4K]
D. A force that acts between charged and uncharged particles. I think it’s D because the electrostatic force is the attractive or repulsive force between two electrically charged objects. D is the closest answer to the definition of electrostatic force
4 0
3 years ago
Can some one help me in this I hope this will be easy for you :)
kramer

Answer:

c) i)  Mg²⁺   ii) O²⁻

Explanation:

I don't know the answer to Q7. because you don't show the diagram

5 0
2 years ago
An unbalanced equation is shown. In this reaction, 200.0 g of FeS2 is burned in 100.0 g of oxygen, and 55.00 g of Fe2O3 is produ
Crazy boy [7]
<span>4FeS2 + 11O2 = 2Fe2O3 + 8SO2</span>

Percent yield is calculated as the actual yield divided by the theoretical yield multiplied by 100.

Actual yield = 55 g ( 1 mol / 159.69 g ) = 0.34 mol Fe2O3

To find for the theoretical yield, we first determine the limiting reactant.

100 g O2 ( 1 mol / 32 g) = 3.13 mol O2
200 g FeS2 (1 mol / 119.98g) = 1.67 mol FeS2

Therefore, the limiting reactant is O2.

Theoretical yield = 3.13 mol O2 ( 2 mol Fe2O3 / 11 mol O2 ) = 0.57 mol Fe2O3

Percent yield = (0.34 mol / 0.57 mol) x 100 = 59.74%
3 0
2 years ago
Which of the following describes a strong acid?
zlopas [31]
I remember learning this last y’all i jus don’t remember it might be A or C
7 0
2 years ago
What is exchanged between the system and the surroundings ​
BartSMP [9]

Answer:

see note under explanation

Explanation:

When describing system and surroundings the system is typically defined as the 'object of interest' being studied and surroundings 'everything else'. In thermodynamics heat flow is typically defined as endothermic or exothermic. However, one should realize that the terms endothermic and exothermic are in reference to the 'system' or object of interest being studied. For example if heat is transferred from a warm object to a cooler object it is imperative that the system be defined 1st. So, with that, assume the system is a warm metal cylinder being added into cooler water. When describing heat flow then the process is exothermic with respect to the metal cylinder (the system) but endothermic to the water and surroundings (everything else).

8 0
3 years ago
Other questions:
  • Which phrase describes an atom
    5·1 answer
  • A type of covalent bond in which electrons are shared unevenly
    7·1 answer
  • Describe how to write the Ksp.
    8·2 answers
  • The secondary structure of a protein refers to the ___________.a. three-dimensional folded structure of the protein. b. configur
    6·1 answer
  • If it takes 54ml of 0.1 m naoh to neutralize 125 ml of a hcl solution with unknown concentration, what is the concentration of t
    13·1 answer
  • A light year measure the distance a lightbeam can travel in one year one light year is equivalent to 9500000000000 km why do sci
    9·1 answer
  • Which elements are likely to close electrons?
    15·1 answer
  • You decide to boil water to cook noodles. You place the pan of water on the stove
    9·1 answer
  • Identify the reaction that would possibly make a good
    13·1 answer
  • This is due tomorrow... :How can you tell the mass was conserved in a chemical reaction?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!