An essential mineral needed in the human diet is the potassium ion. The movement of potassium ions, K+ (aq), in and out of nerve cells allows these cells to transmit the electrical impulses needed to control muscle responses. Explain, in terms of conductivity, why a solution of KCl is a "good" conductor, whereas solid KCl does not conduct at all. Refer to both substances in your answer.

Sarah wants to know where in her garden chamomile would grow the best. she thinks chamomile will grow best in the corner of the garden that gets the most sunlight. to test her hypothesis, she decides to plant several groups of chamomile in her garden as an experiment. which of the following variables will sarah need to measure to know which group of plants grew best? a. the location of the plants b. the type of plants c. the height of the plants d. the amount of water she gives the plants

Select the correct answer a modure consists of glucose and water. what is the percent composition of glucose in the mixture if it contains 1.3 moles of glucose (cho total mass of the mature is 276 grams? ) and the a 1775

Under which circumstances are kp and kc equal for the reaction aa(g)+bb(g)⇌cc(g)+dd(g)?