Will give brainliest !
a chef places sugar crystals in a cooking pan. he turns on the burner under the pan. in a few minutes, the sugar begins to melt. which process is most directly responsible for transferring heat from the burner into the sugar?
radiation
convection
conduction
resonance

In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?

Which statement correctly describes the phosphate ion, ? it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge on the phosphorus atom. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge on the phosphorus atom.

How many moles of no2 will form when 3.3 moles of cu are reacted with excess hno3?