What is the total number of joules of heat energy absorbed by 15 grams of water when it is heated from 30°c to 40°c?

Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.

All cells are made of four types of acids, lipids, proteins, and carbohydrates.

Which reason best explains why metals are malleable? a)because they have delocalized electrons b)because they have localized electrons c)because they have ionic bonds d)because they have rigid bonds