Which best explains why a crystal is incompressible? 0 its molecules remain in position without vibrating, o the molecules of a crystal behave like those of a gas. o there is little, if any, space left between its adjacent molecules, o its molecules switch positions when they are compressed

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.

Analyze the reaction to determine whether the reaction is exothermic or endothermic. explain your reasoning.

Scientists often deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. express each of these numbers in an alternate form.