How many liters of solution are needed to make a 1.85 M solution containing 2.40 moles of KMnO4?

Volume of solution L = 1.3 L

Explanation:

Given data:

Volume of solution needed = ?

Molarity of solution = 1.85 M

Moles of KMnO₄ = 2.40 mol

Solution:

Formula:

Molarity = number of moles / volume of solution L

1.85 M = 2.40 mol /  volume of solution L

now we will put the values.

Volume of solution L = 2.40 mol  / 1.85 M

          M = mol/L

Volume of solution L = 1.3 L

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.

the answer is the first option

explanation:

just googled it m8. not that hard

lol