Blog

Identify thenumber of significant figures in thefollowing number 56.01058

Which of the following shows the balanced equation for  Copper(II)oxide with sulfuric acid

Identify the name of the following molecule Mg(NO3)2

Identify thenumber of significant figures in thefollowing number 56.0560

Calculate the heat of reaction for 50.00 mL of 0.400 M CuSO4 at 22.5 Celsius that is mixed with 50.00 mL of 0.600 M NaOH at 22.5 Celsius. After the reaction occurs, the final temperature of the mixture was 24.75 Celsius. The density of this mixture is 1.02 g/mL and assume the reaction is run in water. [The specific heat capacity of water is 4.184 J/(gxCelsius)] Heat = mass x specific heat x change in temperature

The net ionic equation for the reaction of sodium carbonate with hydrochloric acid is Doc2.docx

A 3.180 g sample containing KHP was dissolved in approximately 50.00 mL of water. This resulting solution required 30.180 mL of 0.250 M NaOH solution to neutralize it. What percent of the solid sample was pure KHP? (Assume no other acids are present. KHP = Potassium hydrogenphthalate KHC8H4O4; the molar mass= 204.22 g/mol) (Hint: Balance the reaction. KHP has ONE acidic H, hence, the reaction ratio is 1:1)

Find the derivative of .

A calorimeter is to be calibrated:  51.203 g of water at 55.2 Celsius is added  to a calorimeter containing 49.783 g of water at 23.5 Celsius. After stirring and waiting for the system to equilibrate, the final temperature reached 37.6 Celsius. Calculate the calorimeter constant.  Heat =mass X specific heat X change in temperature 

The magnetic properties of molecular oxygen (due to TWO unpaired electrons) can be observed by which of the following theory?