Answer:
a. 52.8
Explanation:
To find the number of moles of HCl we use the relation M₁V₁=M₂V₂
where M₁ is the initial molarity, M₂ the new molarity, V₁ the initial volume used, and V₂ the final volume obtained.
M₁=7.91 M
M₂=2.13 M
V₁=?
V₂=196.1 mL
Replacing these values in the relationship.
M₁V₁=M₂V₂
7.91 M× V₁=2.13 M×196.1 mL
V₁=(2.13 M×196.1 mL)/7.91 M
=52.8 mL
A i just had this question and i got it right
Answer:
There are alot of facts but here are a few
Explanation:
Atoms:
There are 3 parts to an atom
Protons have a positive electrical charge
Atoms are the smallest particles to make an element
Elements:
Hydrogen is the most common element in the world
An element is a substance that is made entirely from one type of atom.
An element is a substance that cannot be broken down into any other substance.
No, pure cocoa powder is not very soluble. A hot cocoa mix will dissolve well under warm temperatures.
