Indigenous people sometimes cook in watertight baskets by placing hot rocks into water to bring it to a boil. what mass of 500ºc rock must be placed in 4.00 kg of 15.0ºc water to bring its temperature to 100ºc, if 0.0250 kg of water escapes as vapor from the initial sizzle? you may neglect the effects of the surroundings and take the average specific heat of the rocks to be that of granite. (answer in kg)

Ais a machine that makes work easier when a single force is applied. a simple machine b compound machine c endangered machine d complex machine

Define the terms moral development and moral reasoning.

Two models of the same compound are shown. in what way is model b better than model a? model b shows the types of elements in the compound, but model a does not. model b shows the three-dimensional shape of the molecule, but model a does not. model b shows how the atoms in the molecule are connected, but model a does not. model b shows the number of atoms of each element in the molecule, but model a does not