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
marta [7]
3 years ago
9

The number of molecules in 7g nitrogen​

Chemistry
1 answer:
charle [14.2K]3 years ago
5 0

Answer:

the number of molecules in 7g nitrogen

Ans) 7 gram of Nitrogen contains 1.5×10^23 molecules =1.5e+23

You might be interested in
Which of the following systems has potential energy only?
DIA [1.3K]

Answer:

a bird sitting on a branch

6 0
3 years ago
Please help with this
dlinn [17]

Answer:

A sample of a gas (5.0 mol) at 1.0 atm is expanded at constant temperature from 10 L to 15 L. The final pressure is 0.67 atm.

Step by Step Explanation?

Boyle's law states that in constant temperature the variation volume of gas is inversely proportional to the applied pressure.

The formula is,

P₁ x V₁ = P₂ × V₂

Where,

P₁ is initial pressure = 1 atm

P2 is final pressure = ? (Not Known)

V₁ is initial volume = 10 L

V₂ is final volume = 15 L

Now put the values in the formula,

\begin{gathered}\rm 1\times 10 = P_2\times 15\\\\\rm P_2 = \frac{10}{15\\} \\\\\rm P_2 = 0.67\end{gathered]

Therefore, the answer is 0.67 atm.

5 0
2 years ago
Read 2 more answers
Almost 99% of earths atmosphere is made up of two gases. What are the two gases and the percents of each?
Natali5045456 [20]
The Answer Is A 21% oxygen and 78%nitrogen
5 0
3 years ago
Read 2 more answers
Worth many points (timed test)
ANEK [815]

Answer:

2.335 J/g*degrees celcius

Explanation:

6 0
3 years ago
Which physical method can separate a mixture of steel ball bearings and marbles
Lana71 [14]
Sorting is a method that could separate those materials

6 0
3 years ago
Read 2 more answers
Other questions:
  • How many moles of NAHCo3 are present in a 2.oog sample
    14·1 answer
  • Is it true or false that Science is a collection of facts that does not evolve. We have gained all the knowledge we can from sci
    8·1 answer
  • Which of the following distinguishes a nuclear reaction from a chemical reaction? a.It involves atoms.
    12·1 answer
  • During which of the fallowing chemical changes does a precipitate form??
    7·1 answer
  • Identify the precipitate (if any) that forms when NaCH3COO (also written as NaC2H3O2) and HCl are mixed
    8·2 answers
  • The atomic masses of any two elements contain the same number of
    14·1 answer
  • Arrange the following ions in order of increasing ionic radius: K+, P3–, S2–, Cl–.
    8·1 answer
  • The density of aluminum is 2.7 g/cm3. A metal sample has a mass of 52.0 grams and a volume of 17.1 cubic centimeters. Could the
    11·1 answer
  • Write in short adsorbent chromatography
    13·1 answer
  • Which of the following statements is not true for Coulomb's law?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!