General Chemistry Answers

Calculate the percentage concentration of a solution that contains 20 grams of sodium hydroxide, NaOH, in a 500 mL brine solution

Calculate the percentage concentration of a solution that contains 20 grams of sodium hydroxide, NaOH,. in a 500 mL brine solution

A 40.0 gram-sample of methanol, CH4O is mixed with 60.0 grams of ethanol, C2H60. What is the mole fraction of the methanol?

What is the mole fraction of the solute in a 40% by mass ethanol(C2H6O) solution in water?

4. NaOH react completely with Al(NO3)3.

a. Write the balance chemical equation

b. What volume of 0.300 M NaOH is required to react completely with 2.50 g Al(NO3)3

Cisplatin or Platinol has a chemical PtCl2(NH3)2 that is used in the treatment of certain cancers. Calculate (a) the amount (mol) of compound in 285.3 g of cisplatin

Is there a difference when the needle or metal clip is placed on the surface of distilled water and on the surface distilled water with dilute amounts of liquid detergent? Explain your observations in terms of the strength of IMFA present in each condition.

If the burette reading for NaOH was taken after rapid delivery of the titrant, what will be the effect

1. Using Hess’ Law and the following information calculate the heat of formation of _the plant hormone ethylene, C₂H₄ in the equation: 2 C(s) + 2 H₂(g) → C₂H₄(g)

thermochemical equation of One mole ammonium nitrate (NH4NO) dissolves in water to produce aqueous ammonium ions and nitrate ions accompanied by the absorption of 28.1kJ of heat.