8) In science lab, Sue estimated that there were 140 amoebas under her microscope, but there were actually 150. What was the percent error of her estimate?

A) 6.7%

B) 8.3%

C) 9.4%

D) 10%

With respect to NO and For the reaction NO + O 3 NO 2 + O 2, the reaction was expressing concentrations as molarityare the units of the found to be first order both with respe rate constant k for this reaction?

What energy does a rock resting on a hilltop store? gravitational energy chemical energy thermal energy nuclear energy radiant energy

What is the word equation for sulfuric acid and copper oxide.

Complete the chemical equation for the formation reaction of ethyl alcohol (C2H5OH, l) from its constituent elements in their standard states.

An isotope undergoes radioactive decay by emitting radiation that has no mass. What other characteristic does the radiation have? some shielding required positive or negative charge low penetrating power no charge

Was the relationship among temperature, heat, and thermal energy?

What will most likely happen when a warmer air mass exists above a polar ice sheet? The temperature of the ice sheet will be lowered. Heat will be transferred from the air mass to the ice. The air mass will exert high pressure and rise upwards.

A 2.00 L sample of gas at 35 C is to be heated at constant pressure until it reaches a volume of 5.25 L. To what Kelvin temperature must this sample be heated?

Of the following reactions, which one produces oxygen gas? Fermentation Anaerobic respiration Aerobic respiration Photosynthesis

Describe the electrodes in this iron-copper galvanic cell.