How many electrons does copper have?

A photon has a wavelength of 624 nm. calculate the energy of the photon in joules

Name three gaseous elements that will not burn?

Which properties make a metal a good material to use for electrical wires? malleability and reactivity conductivity and ductility ductility and malleability reactivity and conductivity

In the following balanced reaction, what volume of a 3.0 M H2SO4 is required to completely neutralize 200.0 ml of a 2.5 M NaOH? H2SO4 + 2NaOH → Na2SO4 + 2H2O A. 200 ml B. 83 ml C. 50 ml D. 170 ml

What is the main purpose of scientific models

The ideal gas law is a rearrangement of which of the following gas laws? Boyle's LawCharles's LawAvogadro's Law All of the Above

which activity most contributed to economic interdependence among West African peoples? farming, hurding, textiles, trade.

Why do experiment need to be repeatable?

Which is a compound. A. Water B. Iodine c. Calcium D. Air

Which chemical formula (s) represents the reactants? CO2+H2O+energy = C6H12O6+O2