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
denpristay [2]
3 years ago
11

Boron B 10.811 Number of neutrons

Chemistry
1 answer:
andrew-mc [135]3 years ago
7 0

Answer:

6

Explanation:

To determine the number of neutrons we round 10.8 to 11 and subtract the atomic number (5) and get 6; therefore, boron has 6 neutrons.

You might be interested in
What is biotic?check all that apply​
sasho [114]
Where are the answers that apply .. hopes this help :)
5 0
3 years ago
Read 2 more answers
How to convert volts to electron volts?
SOVA2 [1]

Answer:

How to convert volts to electron-volts

How to convert electrical voltage in volts (V) to energy in electron-volts (eV).

You can calculate electron-volts from volts and elementary charge or coulombs, but you can't convert volts to electron-volts since volt and electron-volt units represent different quantities.

Volts to eV calculation with elementary charge

The energy E in electron-volts (eV) is equal to the voltage V in volts (V), times the electric charge Q in elementary charge or proton/electron charge (e):

E(eV) = V(V) × Q(e)

The elementary charge is the electric charge of 1 electron with the e symbol.

So

electronvolt = volt × elementary charge

or

eV = V × e

Example

What is the energy in electron-volts that is consumed in an electrical circuit with voltage supply of 20 volts and charge flow of 40 electron charges?

E = 20V × 40e = 800eV

Volts to eV calculation with coulombs

The energy E in electron-volts (eV) is equal to the voltage V in volts (V), times the electrical charge Q in coulombs (C) divided by 1.602176565×10-19:

E(eV) = V(V) × Q(C) / 1.602176565×10-19

So

electronvolt = volt × coulomb / 1.602176565×10-19

or

eV = V × C / 1.602176565×10-19

Example

What is the energy in electron-volts that is consumed in an electrical circuit with voltage supply of 20 volts and charge flow of 2 coulombs?

E = 20V × 2C / 1.602176565×10-19 = 2.4966×1020eV

Explanation:

4 0
3 years ago
Aluminum metal reacts with aqueous cobalt(II) nitrate to form aqueous aluminum nitrate and cobalt metal. What is the stoichiomet
Lelu [443]

Answer:

the stoichiometric coefficient for cobalt is 3

Explanation:

the unbalanced reaction would be

Co(NO₃)₂+ Al → Al(NO₃)₃ + Co

One way to solve is to build a system of linear equations for each element (or group as NO₃) , knowing that the number of atoms of each element is conserved.

For smaller reactions a quick way to solve it can be:

- First the Co as product and as reactant needs to have the same stoichiometric coefficient

- Then the Al as product and as reactant needs to have the same stoichiometric coefficient

- After that we look at the nitrates . There are 2 as reactants and 3 as products . Since the common multiple is 6 then multiply the reactant by 3 and the product by 2.

Finally the balanced equation will be

3 Co(NO₃)₂+ 2 Al → 2 Al(NO₃)₃ + 3 Co

then the stoichiometric coefficient for cobalt is 3

7 0
3 years ago
What ion does a base increase
cricket20 [7]
OH- is the ion that increases the concentration of a base
8 0
3 years ago
Study these images
Talja [164]
2. Because a cumulonimbus cloud is a towering vertical cloud
8 0
3 years ago
Read 2 more answers
Other questions:
  • An equilibrium mixture of CO, O2 and CO2 at a certain temperature contains 0.0010 M CO2 and 0.0100 M O2. At this temperature, Kc
    11·2 answers
  • When vinegar and baking soda are combined what bubbles form
    15·1 answer
  • In which two groups do the majority of the elements not form ions
    13·1 answer
  • Why is it necessary to mix the solution very rapidly when the bleach is added?
    12·1 answer
  • To produce 8 molecules of ammonia, NH3, we would need ___________ molecules of hydrogen, H2 and ____________ molecules of nitrog
    10·1 answer
  • When a solid undergoes _____ it takes up less space due to cooling
    8·2 answers
  • 2-8-6 refers to the proton configuration for sulfur.<br> True<br> Or False
    15·2 answers
  • 7. Marcie fills a graduated cylinder with 15.0mL of water. Paul finds the mass of a marble to be
    8·1 answer
  • Identify the nonelectrolyte
    15·1 answer
  • How many moles are in 8.25×10²⁵ molecules of water(H20)?​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!