19) Which if the following is a heterogeneous mixture?

a. Air

b. Steel

d. Soil

An aqueous potassium chloride, KCl, solution is made by dissolving 0.295 0.295 mol KCl in 740.0 740.0 g of water. Calculate the molality of the solution.

What is the correct balanced equation for the following: potassium iodide + lead (II) sulfide - -> lead (ii) iodide + potassium sulfide (A) 2KI + PbS - > Pbl2, + K2S (B) KI + PbS-> Pbl + KS (C) KI + Pb25 - > Pb2l + KS (D) 2KI + Pb25 - > Pb2l2 + K2s

Ejercicios sobre análisis gravimétrico y análisis volumétrico. 3. Calcule el pH de una solución que tiene una concentración de iones H3O + de 3.6x10-4 M 4. Calcule el volumen de H2SO4 0.2M que se requieren para titular 23 mL de NaOH 0.1M 5.

Archimedes used what method to find the volume of the golden crown?

What are the 2 main sources of sulfur and nitrogen gases in Canada?

What is the percent mass/volume of a solution having a mass of 65.00 grams and a volume of 600ml

This element has 3 electrons in its Lewis dot structure and is in the 3p orbital section.

In an exothermic reaction, energy is transferred from a. the reactants to the surroundings. c. one reactant to another. b. the surroundings to the reactants. d. the container to the chemicals.

In any chemical compound the elements are always combined in the same proportion by__. a) charge b) mass c) volume d) density

Which would exhibit characteristics of both a metal and a nonmetal? select one: a. si b. ge c. sb d. po e. all of the above exhibit characteristics of both a metal and a nonmetal?