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
aliina [53]
3 years ago
12

How many electrons are in the element

Chemistry
1 answer:
Aliun [14]3 years ago
8 0

Answer:

Number of electrons differ from one elements to other elements .means that each elements have different numbers of electrons

for ex Hydrogen has only one electron whereas helium has 2 electrons

Number of electrons = Atomic number

Atomic number of an element tells the no. of electrons in it.

For ex

Hydrogen ( atomic no. 1 ) ---- 1 electron

helium ( atomic no 2 ) ---- 2 electron

Lithium (atomic no.3 ) ---- 3 electron

You might be interested in
A bowling ball rests on the floor. The bowling ball is given a push.
lyudmila [28]

Answer:

A. It will move.

8 0
2 years ago
What do chemists measure concentration with?
solniwko [45]
How to calcutate concentration of solution.
there is 12gram of solute in a 36 gram solution
then you take 12 divided by 24 because 36-12=24 which is youe solvent
8 0
3 years ago
Read 2 more answers
What does 2n² ?denote explain it with the help of two example<br>​
Lana71 [14]

Answer:

2n² means 2 × n × n . the power on the n represent the no. of time it is multiplied.

for ex 3x² = 3 × x × x

4x⁴ = 4 × X× X × X× X

8 0
3 years ago
The density of H2O2 is 1.407 g/mL, and the density of O2 is 1.428 g/L. How many liters of O2 can be made from 55 mL H2O2
balandron [24]

Explanation:

mass H2O2 = 55 mL(1.407 g/mL) = 80.85 g

molar mass H2O2 = 2(1.01 g/mol) + 2(16.00 g/mol) = 34.02 g/mol

moles H2O2 = 80.85 g/34.02 g/mol = 2.377 moles H2O2

For each mole of H2O2 you obtain 0.5 mole of O2 (see the equation).

moles O2 = 2.377 moles H2O2 (1 mole O2)/(2 moles H2O2) = 1.188 moles O2

Now, you need the temperature.  If you are at STP (273 K, and 1.00 atm) then 1 mole of an ideal gas at STP has a volume of 22.4 L.  Without temperature you are not really able to continue.  I will assume you are at STP.

Volume O2 = 1.188 moles O2(22.4 L/mole) = 0.0530 L of O2.

which is  53 mL.

8 0
2 years ago
When storing parts outside it is best to keep them under tarps or wrapped to stay in compliance. T or F
alex41 [277]

Answer : True

Explanation : When storing parts outside it is best to keep them under tarps or wrapped to stay in compliance is true, because when we store the parts outside the house there are high chances of the parts getting exposed to environmental moisture. Which will develop rust on the parts and make it useless later on. To avoid this situation it is safer to keep it covered under the tarps or wrap it with something which can protect it from moisture.

6 0
3 years ago
Read 2 more answers
Other questions:
  • What type of energy is present inside the bonds of atoms?
    6·2 answers
  • How does the amount of a substance affect the rate at which temperature changes?
    12·1 answer
  • Calculate the density, in grams per liter, of carbon dioxide (CO2) gas at STP.
    10·2 answers
  • Which is apart of the sales process ?
    9·2 answers
  • I NEED HELP FAST!!!!! Can you tell me about the structure of atoms??? I have a DBA in a few minutes and I don't know!!! Please u
    8·1 answer
  • Please answer asap!
    5·1 answer
  • What product or ratio of properties remains constant (PxT, TxV, P/V, V/T, etx)?When you have decided, label the "constant?" colu
    7·1 answer
  • he specific heat capacity of a pure substance can be found by dividing the heat needed to change the temperature of a sample of
    12·1 answer
  • Please help help ASAP Please help It’s do in a 1 hour What conclusion can you draw about the relationship between physical activ
    8·2 answers
  • Why are 99.9% of metals (pure) way more expensive than 95% metals?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!