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
Anna11 [10]
3 years ago
12

How many moles are in 75.0 grams of nitrogen gas, N2?

Chemistry
1 answer:
Westkost [7]3 years ago
7 0

<u>Given:</u><u>                                                                                                                       </u>

Mass of Nitrogen (N₂) gas = 75 grams

<u>Finding the number of moles of N₂:</u><u>                                                                     </u>

We know that the molar mass of N₂ is 28 grams/mole

Number of moles = Given mass / Molar mass

Number of moles = 75 / 28

Number of moles = 2.68 moles

Hence, there are 2.68 moles in 75 grams of Nitrogen Gas

You might be interested in
A cough syrup contains 5.0% ethyl alcohol, c2h5oh, by mass. if the density of the solution is 0.9928 g/ml, determine the molarit
WARRIOR [948]
To answer the question above, let us a basis of the 1000 mL or 1 L. 
                 volume = (0.9928 g/mL)(1000mL) = 992.8 g
Then, determine the mass of the alcohol by multiplying the total mass by the decimal equivalent of 5%. 
               mass of alcohol = 0.05(992.8 g) = 49.64 g
Then, determine the number of moles of ethyl alcohol by dividing the mass of alcohol by the molar mass (46 g/mol). 
                       n = 49.64 g/ (46 g/mol) = 1.08 mol
Then, divide the number of moles by the volume (our basis is 1 L)
                       molarity = 1.08 mol/ 1 L = 1.08 M
5 0
3 years ago
A fish is removed from a contaminated lake. You determine that a particular toxin (X) is present in its cells at concentration X
netineya [11]
The level of toxins in the fish's cell is equivalent to the level of toxins in the water. Therefore, in order to reduce the toxins further, we should replace the now contaminated water with clean water. After the level of toxins in the fish's cell stops reducing, we replace the water with clean water once again.
3 0
3 years ago
Calculate the volume of a 3.50 M solution of H2SO4 made from 49 g of H2SO4
maxonik [38]

Answer:

0.143L

Explanation:

Molar mass of H2SO4 = 98g/Mol

No of mole = mass/molar mass

No of mole= 49/98 = 0.5 mol

No of mol = concentration × volume

Volume = n/C = 0.5/3.5 = 0.143L

3 0
3 years ago
Write the balance nuclear equation showing the decay of zinc-69 to gallium-69
Taya2010 [7]

Answer:

It is a beta decay equation unknown

Explanation:

none

5 0
3 years ago
Now draw the eight planets as circles, and label each one. The scale doesn’t need to be perfect. You can estimate the planets’ s
Ierofanga [76]

i dont now but thaks you po por the pionts

3 0
3 years ago
Read 2 more answers
Other questions:
  • You compare two layers to a because the crust and upper mantle are solid
    13·1 answer
  • Formulate a sample scientific hypothesis
    6·2 answers
  • Sex cells from female reproductive organ?
    7·2 answers
  • Help ..... a chemical equation for this problem ..:
    13·1 answer
  • The gas molecules that make up air are in two rooms. The gas molecules in the kitchen are moving faster than the gas molecules i
    15·1 answer
  • A sample of 5.00 mol of gas in a 10.00 L container is at 45.0 °C. What is the pressure of the gas?
    11·1 answer
  • Which is an example of making a quantitative observation?
    15·2 answers
  • PLS HELP omg im gonna fail :')
    15·1 answer
  • What is the speed of a wave with a frequency of 2 Hz and a wavelength of 87m (subject is science) pls answer fast
    12·1 answer
  • Which chemical name is correctly paired with the chemical formula?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!