1) Given the mass in grams , how do you find the mole (n) of a substance? a) divide the mass (g) by the molar mass (g/mole) b) divide the molar mass (g/mole) by the mass (g) c) multiply the mass (g) by the molar mass (g/mole) 2) Find the mole of the 0.52 g methanol (CH3OH). The molar mass of methanol is 32.05 g/mole.  a) 0.016 mole b) 61.6 moles c) 16.66 moles 3) In solving for heat given out or taken in, the equation q = mc∆T is used. What is the unit for q? a) Joules b) Kelvin c) Celsius 4) To convert volume to mass, we use density. What is the density of water? a) 1 g/cm3 b) 100g/cm3 c) 4.18 J/g oC 5) what is the mass (g) of a 20 mL water? a) 20 g b) 20 g/ml c) 2 g 6) In calculating for the heat release in a reaction using the equation q = mc∆T. C is the specific heat of the substance. What is the specific heat of water a) 4.18 J/g oC b) 4.18 J c) 4.18 J/kg

Review - Basic Chem Computation

列印
嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?