How many calories of heat are needed to heat 39g water from 22 to 27 degrees celcius

In this scenario a battery is used to supply chemical potential energy. The potential energy is transformed and produces kinetic energy. The battery causes a fan to spin and that kinetic energy can also be described as mechanical energy.

How can the number of electrons be predicted in a neutral atom?

How might we one day be able to prove the absence of God through science?

What is the mass number of an atom of 5 protons and 7 nuetrons

What are the uses of zinc

Do pure substances have the same chemical and physical properties

How is matter conserved in a chemical reaction

Define Percent transmittance

Express (3 x 104) (4 x 1023) in scientific notation

The theoretical yield of aspirin in a reaction is 721 g. What is the percent yield if 461 g is produced?