A component of protein called serine has a percent composition as follows. Calculate the empirical formula.
C = 34.95 % H=6.844 % 0 = 46.56 % N= 13.59 %

Asmall amount of a solid is added to water. the observation made after fifteen minutes is shown in the figure. which of these solids has been probably added to water? a) oil b) sand c) sugar d) wood chips

Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat

Which of the following best supports the concept that genetic information is passed on to offspring from both of their parents, not just one?