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
pshichka [43]
3 years ago
15

How many moles are in 68.5 liters of oxygen gas at STP?

Chemistry
1 answer:
larisa86 [58]3 years ago
5 0
At STP, 1 mol of gas occupies 22.4 L.
                                     mol O2 = 68.5 L * 1 mol/22.4 = 3.06 mol
The answer is that there are 3.06 mol of oxygen gas at STP.
You might be interested in
How many electrons will a fluorine (f) atom gain or lose in forming an ion?
777dan777 [17]
It will gain one electrons to form the fluorine ion
6 0
3 years ago
PLZZZZZZZZZZZZZZZZZZ15. As much as 90 percent of the oxygen in our atmosphere is the result of
vladimir2022 [97]

Answer:

The correct answer is - option D. photosynthesis.

Explanation:

It is shown by the study that most of the atmospheric oxygen comes from the photosynthesis by plants as oxygen is the byproduct of the photosynthesis. Photosynthesis is the process that uses light energy, carbon dioxide, and water to produce food or glucose/sugar and release oxygen as the byproduct.

Many scientists believe that oceanic phytoplankton that releases oxygen by the photosynthesis process makes 80 to 85% of the total oxygen of the atmospheric oxygen.

7 0
3 years ago
Read 2 more answers
In which step of the four-stroke engine cycle does the spark plug initiate the combustion reaction?
Dominik [7]
ANSWER
Power stroke

EXPLANATION

At the power stroke stage, the piston is forced to move down by the expanding gases as both intake valve and exhaust valve are closed.
A spark from the spark plug contributes to ignition of the compressed fuel air mixture to released energy to perform work.
4 0
2 years ago
Read 2 more answers
Hiii please help i’ll give brainliest
aev [14]

Answer:

the applied force is greater than the force of friction

Explanation:

8 0
3 years ago
Consider the nuclear equation below. Superscript 235 subscript 92 upper U right arrow superscript 4 subscript 2 upper H e. What
coldgirl [10]

Answer:

\rm_{90}^{231}\text{Th}

Explanation:

The unbalanced nuclear equation is

\rm _{92}^{235}\text{U} \longrightarrow \,  _{2}^{4}\text{He} + X

Let's write X as a nuclear symbol.

\rm _{92}^{235}\text{U} \longrightarrow \,  _{2}^{4}\text{He} + _{Z}^{A}\text{X}

The main point to remember in balancing nuclear equations is that the sums of the superscripts and of the subscripts must be the same on each side of the reaction arrow.

Then

235 = 4 + A , so A = 235 - 4 = 231, and

 92 = 2 + Z , so  Z =   92 - 2 =  90

And your nuclear equation becomes

\rm _{92}^{235}\text{U} \longrightarrow \,  _{2}^{4}\text{He} +\, _{90}^{231}\text{X}

Element 90 is thorium, so  

\rm X = _{90}^{231}\text{Th}

7 0
3 years ago
Other questions:
  • 1. The Great Pacific Garbage Patch is the world's largest garbage dump. How big is it?
    7·1 answer
  • The doctor knows that people taking the medicine may sleep better just because they expect the medicine to work. How can he be s
    10·1 answer
  • Who was the first hispanic justice of the United States Supreme Court
    14·2 answers
  • Calculate the boiling point of a 3.60 m aqueous sucrose solution. express the boiling point in degrees celsius to five significa
    10·2 answers
  • Calculate the pH of a solution that has [H3O+]=4.3 x 10^-5 M
    13·1 answer
  • Why does boiling water in a large pot on a stove have a temperature of 100°C even if it has been boiling for an hour? The temper
    10·2 answers
  • What might happen if the greenhouse effect didn't exist?
    6·2 answers
  • Why do we need to blend fibres? Name one blended fibre.​
    11·1 answer
  • which type of intermolecular force in water creates the surface tension that allows the stones to skip across the top of the wat
    8·1 answer
  • If a 10.0ml sample of unknown liquid has a mass of 7.553g what is the density of the unknown liquid
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!