Question: Q: What usually causes fractures on a bone? Choices: - compressive stress - shear stress - extra weight - excessive bending stress A:
Answer: excessive bending stress

Question: Q: Chemical equations in which heat is shown as either a reactant or a product are called what? Choices: - hydroelectric equations - thorium equations - feedstock equations - thermochemical equations A:
Answer: thermochemical equations

Question: Q: In order to determine its molecular formula, it is necessary to know what about the compound? Choices: - lipid mass - polar mass - protons mass - molar mass A:
Answer:
molar mass