Answers created by ILoveMath11

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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=x-6# 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 y-intercept given #5x – 7y = 105#?
  
• How do you simplify radical 8?
  
• How to prove the identity ? #1- (tan^2x/(1+tan^2x)) = cos^2x#