What occurs in a chemical reaction a. reactants break bonds and form new bonds to make new substances. b. reactants break bonds and reform the same bonds. c. reactants break bonds but do not form new substances d. no chemical bonds are broken

Amap that uses a range of colors and shading to represent the elevation, depth, or landscape of specific features on earth is a/an map.

He table below gives the atomic mass and relative abundance values for the three isotopes of element m. relative abundance (%) atomic mass (amu) 78.99 23.9850 10.00 24.9858 11.01 25.9826 what is the average atomic mass (in amu) of element m? 2.86 5.36 24.30 24.98

How much heat is added if 0.814g of water increase in temperature by 0.351 degree c?