Butanal and butanone have different chemical and physical properties primarily because of differences in their

(1) functional groups

(2) molecular masses

(3) molecular formulas

(4) number of carbon atoms per molecule

Which of the following is closest to the meaning of the term ancestor? A. a relative from long ago B. an organism that has evolved C. a trait that has changed over time D. an organism that is adapted to its environment

Viktor tests a solution with a strip of blue litmus paper. The paper turns pink. The solution is a

Ip a gas has a temperature of 310 k and a pressure of 100 kpa. part a find the volume occupied by 1.20 mol of this gas, assuming it is ideal.

A 1.00 * 10^-6 - g sample of nobelium, 254/102 No, has a half-life of 55 seconds after it is formed. What is the percentage of 254/102 No remaining at the following times? a) 5.0 min after it formsb) 1.0 h after it forms

In a controlled scientific experiment, a scientist ... ?

Which of the following actions will not increase the rate at which a solid dissolves in a liquid? A. increasing the surface area of a solid B. stirring the solid and the liquid C. increasing the amount of the solid D.

Does the amount of heat absorbed as 1 kg of saturated liquid water boils at 100°C have to be equal to the amount of heat released as 1 kg of saturated water vapor condenses at 100°C?

F. Protection of the body from infectious organisms is accomplished by which of these tissues? a) bone; b) muscle; c) nerve; d) blood

A compound that is composed of molybdenum (Mo) and oxygen (O) was produced in a lab by heating molybdenum over a Bunsen burner. The following data was collected: Mass of crucible: 38.26 g Mass of crucible and molybdenum: 39.

Which of the following elements has electrons in the 3d sublevel?