A chocolate bar weighs 4.00 ounces. If the chocolate delivers 2.78 calories per gram, how many calories are in the chocolate bar?

Agas at 155 kpa and standard temperature has an initial volume of 1.00 l. the pressure of the gas rises to 500 kpa as the temperature also rises to 135°c. what is the new volume? 2.16 l 0.463 l 0.207 l 4.82 l

The clouds are grey and ground is wet. a quantitative b qualitative

What is avogadro’s number, and why is it useful