What type of energy is playing the piano A. light
B. Thermal
C. electrical
D. mechanical
E. sound

Which produce would best increase the amount of heat energy that is actually gained by calorimeter b

An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have

Write the formula for the following chemicals. 7. e. trinitrogen tetraoxide a calcium phosphate f. magnesium acetate b. potassium sulfide g nickel(iii) cyanide c carbon dioxide h. silver sulfate d. cobalt(ii) chloride