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
BARSIC [14]
3 years ago
15

Uranium has atomic number 92. Its most common isotope is 238U, but the form used in nuclear bombs and nuclear power plants is 23

5U. How many neutrons are in each of these two isotopes of uranium
Chemistry
1 answer:
Yakvenalex [24]3 years ago
3 0

Explanation:

Atomic Number = Number of protons

Mass Number = Number of protons + Number of neutrons

Isotopes are simply atoms of an element with the same number of protons and different number of neutrons.

First Isotope -- 238U

Number of neutrons = Mass Number - Atomic Number

Number of neutrons =  238 - 92 = 146

Second Isotope -- 235U

Number of neutrons = Mass Number - Atomic Number

Number of neutrons =  235 - 92 = 143

You might be interested in
HELP !<br> 85g of NiCl2 dissolves in 350ml of H2O. What is the Molarity? Show your work
trapecia [35]

Answer:

1.874 M.

Explanation:

<em>Molarity is defined as the no. of moles of a solute per 1.0 L of the solution.</em>

<em />

M = (no. of moles of solute)/(V of the solution (L)).

<em>∴ M = (mass/molar mass)of NiCl₂/(V of the solution (L)).</em>

<em></em>

∴ M = (mass/molar mass)of NiCl₂/(V of the solution (L)) = (85.0 g / 129.59 g/mol)/(0.35 L) = 1.874 M.

7 0
3 years ago
Using the knowledge of kinetic particle theory, when salt is dissolved in a glass of water without stirring, all of the water so
Paha777 [63]

Explanation:

This is because the salt particles are colliding with the water particles

6 0
3 years ago
For a particular reaction, ΔH° is 34.2 kJ and ΔS is 99.2 J/K. Assuming these values change very little with temperature, over wh
Nostrana [21]

 Over 344.76 K  the  forward reaction will be spontaneous

 <u><em>calculation</em></u>

ΔG  = ΔH° -TΔs

if ΔG =0

therefore  0 =ΔH°-TΔs

ΔH°   = TΔs

divide  both side  by   Δs

T = ΔH°/Δs

convert 34.2 kj into j

 that  is 1 kj = 1000 j

        34.2 kj =? j

<em>by cross  multiplication</em>

=[34.2 kj x 1000j / 1 kj] = 34200 j

T  is therefore = 34200 j÷99.2 j/k =344.76 k

if  T is greater than  344.76 k  the forward reaction  will be spontaneous

3 0
3 years ago
Read 2 more answers
Select the structure that corresponds to the molecule name:
Pepsi [2]

Answer:

Option B

Explanation:

The name of the molecule is;

1,1,1,3,3,3-Hexachloropropanone

Now, we can see that it contains propanone which is also called acetone. So it will have a double bond with Carbon(C) and Oxygen (O).

Option B has that double bond between C and O that indicates it propanone or acetone.

Thus, it is the correct option.

6 0
3 years ago
How many moles of water will be produced if 14 moles of hydrogen are mixed with 7 moles of oxygen gas
IrinaK [193]

Using simply rational here:

1 Water= two hydrogen atoms+ 1 oxygen atom

The numbers provided would create seven water molecules based on having fourteen hydrogen’s (which would be seven times the two required for water) and seven oxygen.

So, 7

5 0
3 years ago
Other questions:
  • Which substance would have the highest melting point, based on electronegativity?
    15·1 answer
  • The mechanism of chymotrypsin can be viewed as a two-step process, acylation of the enzyme active site followed by a deacylation
    14·1 answer
  • Jason ran 5/7 of the distance around the school track sara ran 4/5 of Jason distance what fraction of the total distance around
    10·1 answer
  • Who Invented microscopes? (This one is for fun. I will be giving away 50 points to the first person!)
    6·1 answer
  • What happens when the angle of the sun is perpendicular to the Earth's surface?
    8·1 answer
  • What does pressure measure
    5·1 answer
  • U-235 undergoes many different fission reactions. For one such reaction, when U-235 is struck with a neutron, Ce-144 and Sr-90 a
    7·1 answer
  • Which of the following best describes what happens when hydrogen and oxygen to form water?
    7·1 answer
  • Guys help me, please
    6·2 answers
  • Which of the following is a completely elastic collision? A. a ball rebounds against a wall, reversing its direction, but at onl
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!