4. How much water would be needed to dilute at 750 ml solution of 2.8M HCl to a 1.0 M solution? 5. If 550 mL of a 3.50 M KCl solution is left out to evaporate until the volume is 275 mL, what would the
new Molarity be?

6. Extra Credit: A solution of H, SO, has a molarity of 0.14 mol/L in 750 mL. If 250 mL of water is added:
a. What is the new molarity of the solution?

Three questions in 1 less see how good really is

Please helll m

Oxidation-reduction reactions (often called "redox" for short) are reactions that involve the transfer of electrons from one species to another. oxidation states, or oxidation numbers, allow chemists to keep track of these electron transfers. in general, one element will lose electrons (oxidation), with the result that it will increase in oxidation number, and another element will gain electrons (reduction), thereby decreasing in oxidation number. the species that is oxidized is called the reducing agent or reductant. the species that is reduced is called the oxidizing agent or oxidant. to sum up: oxidation = increase in oxidation state = loss of electrons = reducing agent reduction = decrease in oxidation state = gain of electrons = oxidizing agent part a which element is oxidized in this reaction? fe2o3+3co→2fe+3co2 enter the elemental symbol. view available hint(s) is oxidized part b which element is reduced in this reaction? 2hcl+2kmno4+3h2c2o4→6co2+2mno2+2kcl+4h2o enter the elemental symbol. view available hint(s) is reduced

Correct relationship between molecular formula and empirical formula

What is the common name for the compound shown here? enter the common name of the compound shown?