A 25 g piece of copper wire is heated, and the temperature of the wire changes from 20°C to 75°C. The amount of heat absorbed is 250 cal. What is the
specific heat of copper?
343.8 kJ
0.18 J/g °C
0.18 cal/g °C

Un cierto gas tiene un volumen de 800ml a 80°c y 600ml a 80°c y 600mmhg de presión. ¿cual será el volumen del gas a condiciones normales? sí el gas es oxígeno, ¿cuál será su peso? y ¿cuántas moléculas están presentes en el sistema?

Margaret wants to make an orange flavored drink by stirring powdered drink mix into a glass of water. she doesn't like drinks that have small clumps of powdered solid in them, so she wants the drink to be a perfect solution. what factors should margaret not consider when deciding how much powder to add to her glass of water?

Define a is a tiny pavket of energy