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Why are chemical reactions important?

What is the molarity of: 40.0 grams of sodium hydroxide in 1.50L of solution?
What is the molarity of: 4.10 grams of magnesium chloride in 300.mL of solution?

Write Cos 20° in terms of sin.?

What are common mistakes students make with Colligative Properties?

How do you solve #3x^2=x6# using the quadratic formula?

Your tank of alkali fish needs a pH of 8, and the pH is 6 at present. What should you do to the #H^+# concentration?

How do you multiply #6^ {  9} ( 6^ { 7} )#?

How do you multiply #e^(( 7 pi )/ 12 i) * e^( 3 pi/2 i ) # in trigonometric form?

How to find the yintercept given #5x – 7y = 105#?

How do you simplify radical 8?

How to prove the identity ? #1 (tan^2x/(1+tan^2x)) = cos^2x#