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
zhannawk [14.2K]
3 years ago
14

What is the total number of nitrogen atoms in 0.25 mole of no2 gas?

Chemistry
2 answers:
Lapatulllka [165]3 years ago
7 0
<span>Avogadro's number represents the number of units in one mole of any substance. This has the value of 6.022 x 10^23 units / mole. This number can be used to convert the number of atoms or molecules into number of moles.

0.25 mol NO2 (1 mol N/ 1 NO2) ( 6.022 x 10^23 atoms / mol ) = 1.5055x10^23 atoms</span>
Savatey [412]3 years ago
3 0

Answer:

1.5*10^23 atoms

Explanation:

What is the total number of nitrogen atoms in 0.25 mole of no2 gas?

mole is the amount of a substance. Its is calculated as mass of a substance over molecular mass(g/mol).

it contains 1 avogadro constant

1 mol=6.02*10^23 avogadros constant

0.25mol=x

so cross and multiply to get the value of x

6.022140857( 74 ) × 10 ^23

0.25*6.022*10^23

nitrogen atoms in such a molar quantity of nitric oxide,

1.5*10^23 atoms

You might be interested in
How are rechargeable batteries recharged? a. Adding new reactants c. Passing electric charge through the reactants b. Changing t
olchik [2.2K]
<span>c. Passing electric charge through the reactants Is the answer to you're question.

</span>
4 0
3 years ago
Determine the final temperature of sample with a specific heat of 1.1 J/g°C and a mass of 385 g if it starts out at a temperatur
Assoli18 [71]

Answer:

T2 =21.52°C

Explanation:

Given data:

Specific heat capacity of sample = 1.1 J/g.°C

Mass of sample = 385 g

Initial temperature = 19.5°C

Heat absorbed = 885 J

Solution:

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = Final temperature - initial temperature

885J = 385 g× 1.1 J/g.°C×(T2 - 19.5°C )

885 J = 423.5 J/°C× (T2 - 19.5°C )

885 J / 423.5 J/°C = (T2 - 19.5°C )

2.02°C = (T2 - 19.5°C )

T2 = 2.02°C + 19.5°C

T2 =21.52°C

8 0
3 years ago
What is the mole ratio of NO2 to O2
Mazyrski [523]
The mole ratio is 4 NO2 to 3 O2; 4:3
8 0
3 years ago
An element X forms a compound XH 3 with hydrogen. Another element Y forms a compound YX 2 with X. Given that the valency of hydr
Marina CMI [18]
XH_{3}
H has a positive 1 charge. This means that having 3H = +3<span>.  This is a neutral compound so x= -3 because X+3H= 0

Y</span>X_{2} is also neutral so 2X+Y= 0
we know X=-3 So, 2(-3)+Y=0
-6+y=0
Y=+6 charge

 
Answer: The valency of X is -3. The valency of Y is 6
7 0
3 years ago
What is the sequence in the formation of the Earth and the Universe?
Bezzdna [24]

Answer:

The Earth formed billions of years after the Universe formed

Explanation:

The "universe" is said to have been formed <em>billions of year ago</em> through an explosion. This was called the <em>"Big Bang Theory." </em>This lead to the<u> expansion of the universe</u> owing to its high temperature and density. After which, the universe cooled down. Galaxies and stars were then formed. Some of the stars died due to explosion, which then led to the <u>creation of planets</u>. Such formation of the planets happened around <u>4.5 billion years ago.</u> This is <em>9.3 billions of years later</em> than the universe was formed<em> (13.8 billions of years ago)</em>. So, this explains the answer.

3 0
3 years ago
Other questions:
  • Given the reaction zn(s) + pb(no3)2 (aq) = pb(s) +zn (no3)2 (aq) the oxidation number of zn metal is
    5·1 answer
  • You are provided with a compound fertilizer, 40-15-10. Calculate the quantity of fertilizer to add to a one hectare field to sup
    14·1 answer
  • Why are the alkali metals and the halogens very reactive
    15·1 answer
  • The test tube that contained the calcium metal was probably the most difficult of the test tubes to clean. Why was aqueous HCl u
    13·1 answer
  • Does the solubility increase whenever the temperature does?
    8·1 answer
  • What causes gas and bloating
    14·1 answer
  • Which molecular solid would have the highest melting point?
    14·1 answer
  • HELPPP MEEEEE!!!POR FAVOR
    11·1 answer
  • What mass does a nuetron have?​
    7·1 answer
  • PLEASE answer! Brainly if more than 2 answers - Liked comment - 5-star rating
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!