In the equation Ca (s) + 2H2O (l) - ->Ca (OH) 2 (aq) + H2 (g), list each element used as a reactant, and tell how many atoms of each are needed for this reaction.

With a 1.0-2.0 Sv dosage of radiation, an individual can expect to A. die. B. hemorrhage. C. see no immediate effect. D. have nausea and hair loss.

Carbon-12 contains 6 protons and 6 neutrons. The radius of the nucleus is approximately 2.7 fm (femtometers) ? and the radius of the atom is approximately 70 pm (picometers). Calculate the volume of the nucleus and the volume of the atom.

What would you expect to happen to the air pressure as a storm approaches? Question 7 options: A. It would increase B. It would decrease C. It would remain the same

Which of the following is NOT a type of Kinetic energy? A. Nuclear B. Electrical C. Thermal D. Mechanical

Why is a single system of measurements necessary throughout the scientific community? Make sure to use complete sentences.

Which organelles are unique to plant cells? chloroplasts mitochondria vacuoles nuclei

An atom that has 13 protons and 15 neutrons is an isotope of the element? How can I count it?

Which element is nuclear fusion least likely to produce? hydrogen, which has an approximate mass of 1 chlorine, which has an approximate mass of 35 argon, which has an approximate mass of 39 silicon, which has an approximate mass of 28 I know the

How deep does the surface current known as the Gulf Stream go A. 3,000 meters B. 3 meters C. 300 meters

What characteristics of a planet determine the strength of its gravitational force on other objects? A. diameter of the planet and its location in space B. the number of moons that the planet has C.