Raspberry ketone is the naturally occurring compound responsible for the aroma in red raspberries. A 1500.0 μg sample was burned to give 4.020 mg CO2 and 0.987 mg H2O. a.) If raspberry ketone contains only C, H and O, what is its empirical formula?

b) The molecular mass of ethyl acetate is 164.204 amu. What is the molecular formula?

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? a. the balloons both rise. the cold balloon is larger than the warm balloon. b. the balloons rise at the same rate. both balloons are the same size. c. the warm balloon expands and rises. the cold balloon shrinks and sinks. d. the cold balloon expands and rises. the warm balloon shrinks and sinks.

Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?

How many moles of oxygen gas are produced from the decomposition of six moles of potassium chlorate