How would you make 100 mL of a 0.40 M solution of copper (II) sulfate ?

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li

An excess of lithium oxide undergoes a synthesis reaction with water to produce lithium hydroxide li2o+h2o→2lioh if 1.05 g of water reacted, what is the theoretical yield of lithium hydroxide? a) 5.83 x 10–2 g lioh b) 1.17 x 10–1 g lioh c) 2.79 x 100 g lioh d) 1.40 x 100 g lioh

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?