Give the general formula and class of organic compounds for each of the following;
a) CH3-OH methanol
b) CH3-O- CH3 either
How are aldehydes and ketones alike? How are they different?
Aldehydes and ketones are much alike in many of their reactions, owing to the presence of the carbonyl functional group in both
How many moles of atoms are there in each of the following?
a. 40.1 g Ca 1.00 mol Ca
b. 11.5 g Na 0.500 mol Na
c. 5.87 g Ni 0.100 mol Ni
d. 150 g S 4.68 mol S
e. 2.65 g Fe 0.0475 mol Fe
f. 0.007 50 g Ag 6.5 x 10^-5 mol Ag
1. What is the mass in grams of 2.25 mol of the element iron, Fe?
2.25 mol Fe x (55.9g Fe/ 1 mol Fe)= 126g Fe
2. What is the mass in grams of 0.375 mol of the element potassium, K?
0.375 mol K x (39.1g K/ 1 mol)= 14.7g K
11. Write the chemical equation that relates to each of the following word equations. Include symbols for physical states in the equation.
a. solid zinc sulfide + oxygen gas ⎯→ solid zinc oxide + sulfur dioxide gas
2ZnS(s) + 3O2(g) ⎯→ 2ZnO(s) + 2SO2(g)
b. aqueous hydrochloric acid + aqueous barium hydroxide ⎯→ aqueous barium chloride + water
2HCl(aq) + Ba(OH)2(aq) ⎯→ BaCl2(aq) + 2H2O(l)
c. aqueous nitric acid + aqueous calcium hydroxide ⎯→ aqueous calcium nitrate + water
2HNO3(aq) + Ca(OH)2(aq) ⎯→ Ca(NO3)2(aq) + 2H2O(l)