Can you include the pome pls
Answer:
100
Explanation:
Step 1: Subtract 50 by 300 to find the total mass of the marbles
300 - 50 = 250
Not hard, right?
Step 2: Divide 250 by 2.5
250 ÷ 2.5 = 100
And... 100 is your answer :)
Hope this helps :)
-jp524
<span>Throughout the development of particle physics, scientists have created different models to understand the atom. When we are talking about the diameter of an atom, we would refer to the Bohr radius, which is the radius from the nucleus to the orbiting electron.
In this case, a hydrogen atom has one electron, and the Bohr radius in the ground state is 5.29 x 10^{-11} meters. To find the diameter, we just multiply the Bohr radius by 2.
diameter = 2 x 5.29 x 10^{-11} meters
diameter = 10.58 x 10^{-11} meters
diameter = 1.058 x 10^{-10} meters
The diameter of a hydrogen atom in ground state is:
1.058 x 10^{-10} meters</span>
Answer:
Diluted solution
Explanation:
It is simple in terms of looking in to it, solute is the solid part of the solution and if a small quantity is dissolved in a solvent which can hold more then the solute added will make the solution diluted and for more info- other answers depict that there is more solute in the solution therefore others can not be the answer
Answer:
0.161 moles
Explanation:
Given parameters:
Mass of Fe = 18g
Unknown:
Number of moles of Fe₂O₃ = ?
Solution:
To solve this problem, we have to work from the known to the unknown specie.
One cogent point we need to take from this problem is that oxygen gas is in excess. The Fe reacting is therefore the limiting reactant which implies that it will determine the extent of the reaction.
Now, the known specie is Fe;
The balanced reaction equation is shown below;
4Fe + 3O₂ → 2Fe₂O₃
Proceed to find the number of moles of Fe given;
Number of moles of Fe = 
Molar mass of Fe = 56g/mol
Number of moles of Fe = 
= 0.32mole
From the balanced reaction equation;
4 moles of Fe produced 2 moles of Fe₂O₃
0.32 moles of Fe will produce 
= 0.161 moles of Fe₂O₃
