A textbook weighs 58.8 N on Earth. What is the mass of the textbook?

What do you mean by elementary and their classification

Can calcium replace gold?

A sample of benzene was vaporized at 25◦C. When 37.5 kJ of heat was supplied, 95.0 g of the liquid benzene vaporized. What is the enthalpy of vaporization of benzene at 25◦C? 1. 30.8 kJ/mol 2. 13.4 kJ/mol 3. 43.0 kJ/mol 4. 6.09 kJ/mol 5. 25.6 kJ/mol

The law of conservation of energy states that energy cannot be created or from one substance to another. be

Which is an example of a chemical change? A) ripping paper B) chopping wood C) baking a cake D) stretching a rubber band

Which elements did curies discover

When rubidium metal is exposed to air, two atoms of rubidium, Rb, combine with one atom of oxygen. If 1.98 grams of rubidium is exposed to air, what will be the mass of the product in grams

Fission reactions can get of of control without what taking place?

In which main energy level does the 's' sublevel first appear? K (first main energy level) L (second main energy level) M (third main energy level) N (fourth main energy level)

What is the nuclear charge of an alpha particle?