Which of the following states of matter has a definite shape? A. solids and liquids only B. liquids and gases only C. liquids only D. solids only

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains

How many moles of sulfuric acid (h2so4) are needed to react completely with 6.8 moles of lithium hydroxide (lioh)? 2lioh + h2so4 → li2so4 + 2h2o a. 3.4 mol h2so4b. 6.8 mol h2so4 c. 10.2 mol h2so4 d. 13.6 mol h2so4