If the atomic number of an element is 6 and its mass number is 13, how many protons are contained in the nucleus

A 50g ice cube at 0 degrees celcius is added to a glass containing 400g of water at 45 degrees celcius. What is the final temperature of the system? You may assume that no heat is lost to the surroundings.

What is the smallest particle that has all the properties of a specific element?

What are elements with atomic numbers above 95 called?

What is the electrolysis of calcium hydroxide

What is approximate half-life of carbon-14?

Hanna hypothesizes that granite is denser than sandstone. How can Hanna test her hypothesis?

It is possible to determine the environment of sedimentation for various sand dunes by

Which change results in the formation of different substances? (1) burning of propane (2) melting of NaCl (s) (3) deposition of CO2 (g) (4) solidification of water

Suppose that a solid cube of some material floats on the surface of an oil puddle at a service station with 75.1 % of its volume submerged. The density of the oil is 923 kg/m 3. What is the density of the cube's material

What is modern periodic table?