Can someone best explain why a washing machine represents an open system

Consider the following equilibrium for nitrous acid, HNO2, a weak acid: HNO2 (aq) + H2O (l) - >< - H3O + (aq) + NO2^ - (aq) In which direction will the equilibrium shift if NaOH is added?

Investigations were carried out in a science lab to explore the topic of chemical and physical changes. Investigation A Step 1. Add 5 tsp. salt to 100 ml warm water and stir until most or all of the salt is no longer visible. Step 2.

What is the mass of 3.50 moles of silicon dioxide

What is the chemical symbol for the starting substance 2nacl+2h2o->2naOH+cl2+h2

What mass of KBr (in grams) do you need to make 250.0 mL of a 1.50 M KBr solution?

The three major groups p On the periodic table are the

Which of the following has the greatest mass, in grams? a. 1 atom of lead (Pb) b. 0.5 mol copper (Cu) atoms c. 0.3 mol gold (Au) atoms d. 25 atoms of mercury (Hg)

Which one is not a sedimentery rock a.) sandstone b.) limestone c.) quartz d. (coal

Which group is more reactive than the alkaline earth metals?

Why do you not want any of the water on the outside of the test tube to drip off into the calorimeter?