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3 years ago

What's the value if m 2m^2-m-3

SAT

1 answer:

antiseptic1488 [7]3 years ago

3 0

Answer:

m = 1/2

m = -1

Explanation:

Step 1 - Let y=0.

2m^2-m-3 = 0

Step 2 - Factor

(2m - 3 )( m + 1 ) = 0

Step 3

2m-1 = 0 m +1 = 0

Step 4 - Solve

2m = 1 (divide 2 on both sides) m+1 = 0 (subtract 1 on both sides)

m = 1/2 m = -1

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<h3>Definition of molarity</h3>

Molar concentration or molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:

$Molarity=\frac{number of moles}{volume}$

Molarity is expressed in units $\frac{moles}{liters}$ .

<h3>Concentration of CH₃OH</h3>

In this case, you know:

number of moles= 50 g× $\frac{1 mole}{32.04 g}$ = 1.56 moles, being 32.04 $\frac{g}{mole}$ the molar mass of CH₃OH
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Replacing in the definition of molarity:

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Finally, the concentration of CH₃OH in the solution is 3.12 $\frac{moles}{liters}$ .

Learn more about molarity:

<u>brainly.com/question/9324116</u>

<u>brainly.com/question/10608366</u>

<u>brainly.com/question/7429224</u>

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