Steel ball weight four kg from a height of 60 m will it fall more rapidly through water at 25 degrees Fahrenheit or water at 45 degrees Fahrenheit. Or will it make no difference?

How many neutrons does an element have if its atomic number is 50 and its mass number is 166

Exit what is the density of an object having a mass of 5.0 g and a volume of 45.0 cm3?

Which of the following is not a characteristic of a hydrogen bond? 1. it is responsible for the unusual physical properties of water. 2. it is weaker than a covalent bond. 3. it is stronger than other dipole-dipole interactions. 4. it can occur when hydrogen is covalently bound to very electronegative elements liks f, cl, br and i.