2. part 3: double-displacement reactions: for each double-displacement reaction, describe what happened in each well, including the colors of any products that formed. if a chemical reaction occurred, write a balanced equation for it. then use the a, b symbols to write a general equation for a double-displacement reaction. here are the chemical formulas of the reactants for each reaction:
• sodium chloride – nacl
copper sulfate – cuso4
• sodium hydroxide – naoh
copper sulfate – cuso4
• sodium phosphate – na3po4
copper sulfate – cuso4
• sodium chloride – nacl
silver nitrate – agno3
• sodium hydroxide – naoh
silver nitrate – agno3
• sodium phosphate – na3po4
silver nitrate – agno3

the answer is a and have a great day

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.