How does the density of a 4-g sample of copper compare to that of a 12-g sample of copper?

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.

The equation below shows the reaction of zinc with hydrochloric acid (hcl). zn (s) + 2 hcl (aq) —> zncl2 (aq) + h2 (g) what will happen if the concentration of hcl is decreased? a. more zncl2 will be produced. b. the reaction rate will slow down. c. the hydrochloric acid will become more acidic. d. the reaction will produce water instead of hydrogen gas.

Which compound should undergo substitution of the bromine by phenolate anion? draw the structure of the organic product?