Other Chemistry Answers

Which are the product(s) of this chemical reaction?

FeCl3 + 3NH4OH

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A 10.0 mL sample of H₂SO₄ was exactly neutralized by 13.5 mL of 1.0 M KOH. What is the normality of the H₂SO₄?

2.   A carbonate buffer of pH 10 is needed by a chemist. How many grams of Na₂CO₃ is needed to dissolve in 1.5L of 0.2M NaHCO₃ to make the buffer? K_a of HCO₃^- = 4.7 x 10^-11

If the pH of a substance is 4, what will the pOH be?

calculate the heat required to boil 325 g of water

If the hydrogen ion concentration of an unknown solution is 4.56E-7, what is its pH and will this form an acid or a base?

5.A balloon has a volume of 2.25 L when the temperature is 400C. What will be the volume if the balloon is cooled to 120C? Assume the pressure to be constant.

4. A 2.5 litre sample of a gas is heated from 250 C to 550C at constant pressure. Compute the volume at the higher temperature?

2. A tank ( not rigid) contains 2.5 litres of helium gas at 280C . At constant pressure, what will

be the volume of the tank after heating it and its content to 430C temperature?

Titration of 0.2121 g of pure Na2C2O4 (134.00 g/mol) required 43.31 mL

of KMnO4.What is the molar concentration of the KMnO4 solution?