Jason wanted to find out how he could increase the number of popcorn kernels that pop when cooked. he hypothesized that more kernels would pop if he used more oil. to test this, he placed 100 kernels of “pop rite’ popcorn into a popcorn popper that contained different amounts of oil. he used the following amounts of oil: 5 ml, 10 ml, 20 ml, and 30ml. he used 5 ml of oil as the control. he conducted the test 3 times for each amount of oil. he then counted the number of kernels that had popped. each time he heated the oil for 2 minutes and cooked the popcorn for 4 minutes.

Zirconium has an hcp crystal structure and a density of 6.51 g/cm3. (a) what is the volume of its unit cell in m3? (b) if the c/a ratio is 1.593, compute the values of c and a.

There is a theory that indicates that dinosaurs became extinct when about 65 million years ago, a large asteroid hit the earth surface. dust caused by this collision blocked the sunlight reaching the earth's surface and many forms of life became extinct due to the cold. fearing this threat, how large the radius of an asteroid should you be looking for if the dangerous asteroid size is approximately the same as the one that killed the dinosaurs? available data suggests that about 18% of that asteroid's mass ended up as a dust spread evenly over earth after eventually settling out of the upper atmosphere. about 0.0180 g/cm^2 of dust, which is chemically different than the earth's rock, covered the earth's surface. typical asteroids have a density of about 1.9 g/cm^3. now that we know the size of the asteroid, how much energy was released during impact, assuming all of it was just the kinetic energy of the asteroid right before the impact?

Heena wants to measure the volume of a ball that is 24 cm across. how should she set up her equation?