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
Andreyy89
3 years ago
11

Calculate the number of moles in 7g of nitrogen gas​

Chemistry
1 answer:
Andru [333]3 years ago
5 0

Answer:

<h3>0.2498molN_{2}</h3>

Explanation:

7gN2 x \frac{1 mol}{2(14.01) g}

=0.2498mol N2

Nitrogen gas has the formula N_{2} so therefore that means you would have to multiply the mass in the molar by 2. To solve for the number of moles you need to cancel out the grams, you do this by using the molar mass of nitrgoen gas. You get the value on in the denominator from the periodic table (atomic mass of element). The grams will cancel out, leaving you with the number of moles when you divide 7/2(14.01).

You might be interested in
if 0.0203 g of a gas dissolves in 1.39 l of water at 1.02 atmospheres at what pressure (in atm) would you be able to dissolve 0.
Sergeu [11.5K]
First, we need to get n1 (no.of moles of water ): when

mass of water = 0.0203 g and the volume = 1.39 L

∴ n1 = mass / molar mass of water

        = 0.0203g / 18 g/mol
        = 0.00113 moles

then we need to get n2 (no of moles of water) after the mass has changed:

when the mass of water = 0.146 g

n2 = mass / molar mass

     = 0.146g / 18 g/ mol
     = 0.008 moles

so by using the ideal gas formula and when the volume is not changed:

So, P1/n1 = P2/n2 

when we have P1 = 1.02 atm 

and n1= 0.00113 moles

and n2 = 0.008 moles 

so we solve for P2 and get the pressure

∴P2 = P1*n2 / n1

        =1.02 atm *0.008 moles / 0.00113 moles

       = 7.22 atm

∴the new pressure will be 7.22 atm


5 0
3 years ago
Why is it necessary to use clean sponge and cleaning rags in dishwashing?​
NARA [144]

Answer:

cloths/sponges can harbor harmful pathogens and spread germs if not cleaned frequently. A damp, smelly dish cloth/sponge is telling you germs are multiplying!

Explanation:

hope this is able to help you :)

6 0
2 years ago
PLEASE ANSWER I WILL MAKE BRAINLIEST!!!
tangare [24]
Using an example like Christmas lights, I would say yes because normally a lot of them would go out if one light is broken.
3 0
3 years ago
Read 2 more answers
What are two possible ways to show the structure of ch4?
ikadub [295]

Answer: Two possible ways to show the structure of CH4 are its electron dot diagram or structural formula. CH4 or methane's molecular formula is given as CH4. The structural formula is a graphical representation of a chemical compound.

8 0
2 years ago
Read 2 more answers
How many moles of water are formed from 0.65 moles of oxygen?
sleet_krkn [62]

Answer:

two moles of water

hope this helps

7 0
3 years ago
Other questions:
  • What are the magnitude (size) and direction of the cumulative force acting on the car shown in the picture A. 30 N to the right
    13·2 answers
  • 100 points
    14·2 answers
  • Which of the following affects the rate of a chemical reaction?
    9·2 answers
  • A reaction occurs when solid X is placed into solution Y. As a result, the temperature of the new solution increases by 3°C.
    14·1 answer
  • How many H2O molecules are contained in 0.0016 moles of the hydrate Na2B4O7.10H2O?
    14·2 answers
  • All formulas of mole concept​
    8·1 answer
  • Aluminium extraction from its ore​
    7·1 answer
  • How many atoms are in 123 g of calcium
    11·1 answer
  • The disease that affects our lungs is
    7·2 answers
  • Scientist repeats an experiment and gets a<br> different result. What should the scientist do next
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!