Astudent formulated a hypothesis that cotton will grow larger bolls ( pods ) if magnesium is added to the soil. the student has two experimental fields of cotton, one with magnesium and one without. which data should be collected to support this hypothesis?
(a) height of the cotton plants in both fields
(b) diameter of the cotton bolls in both fields
(c) length of the growing season in both fields
(d) color of the cotton bolls in both fields

What is the formula of the ionic compound composed of calcium cations and chloride anions

Aplanet similar to earth has four moons roughly the same distance away. the moon that will most affect tides on the planet is the one that has the greatest a) mass. b) volume. c) density. d) amount of water.

Suppose a pair of chemical compounds a and b can react in two different ways: a + b -> c reaction 1 gives product c. a + b -> d reaction 2 gives product d. the following facts are known about the two reactions: . reaction 1 is endothermic and reaction 2 is exothermic. if a reaction vessel is charged (filled) with a and b , then at first d is produced faster than c. use these facts to sketch a qualitative reaction energy diagram for both reactions. note: because these sketches are only qualitative, the energies don? t have to be exact. they only have to have the right relationship to each other. for example, if one energy is less than another, that fact should be clear in your sketch.