How much heat is released (in calories) by a sample of sour patch kids burned in a calorimeter if the temperature of the 100 grams of water in the calorimeter was raised from 23.5°C to 62.8°C? Convert your final answer to Calories.

The rock in a lead ore deposit contains 89 % pbs by mass. how many kilograms of the rock must be processed to obtain 1.5 kg of pb?

The modern periodic table has groups.

Skills of homo sapiens were found an excavation. the skulls were preserved because the bodies were frozen. so, these fossils are (blank) fossils.the image shows the evolution of skulls beginning 2 to 3 million years ago. based on the image, modern human skulls(blank) ape skulls.