A substance requires 50.0 J of heat to raise its temperature by 6.00°C. If the mass of the
substance is 5.00 g, what is the specific heat of the substance? 1.67 J/gºC

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

State one important difference between a physical change and a chemical change?

Which of the following is not an assumption that scientists must make about the natural world? a. regularity b. causality c. predictability d. plausibility