Celery stalks that are immersed in fresh water for several hours become stiff and hard. similar stalks left in asalt solution become limp and soft. from this we can deduce that the cells of the celery stalks are

A radioactive element is one that is: a. stable b. not stable c. found in all living organisms d. both b & c

If a measurement is recorded as 1.2 cm, what is the smallest marking on the instrument?

Energy is stored in glucose bonds. A. True B. False

The physician has ordered 1.0 g of tetracycline to be given every six hours to a patient. If your stock on hand is 500 mg tablets how many will you need for one days treatment

For the reaction N2 (g) + 3H2 (g) 2NH3 (g), what will happen if more ammonia gas is added?

The total number of valence electrons in the phosphate ion is

The reaction below has an equilibrium constant kp=2.2*106 at 298 k. 2cof2 (g) ⇌co2 (g) + cf4 (g) calculate kp for the reaction below. cof2 (g) ⇌12co2 (g) + 12cf4 (g)

The electrical conductivities of the following 0.100 M solutions were measured in an apparatus that contained a light bulb as the indicator of conductivity. Rank the solutions in order of decreasing intensity (brightest to dimmest) of the light bulb.

What is the name of a list of elements arranged according to the ease with which they undergo certain chemical reactions?

Why is it harder for the earth to recover from some natural disasters now? A) Human influence may compound the damage. B) The natural disasters have gotten worse. C) This statement is not true.