Copper has a density of 8.96 g/mL. What is the mass of a block of copper that has a volume of 12.6 mL?

FacebookTweetPin Determine the number of moles of hydrogen in 0.0885 mol C4H10 Solution: There are 10 atoms of hydrogen in every molecule of C4H10. Therefore, 1 mol of C4H10 will have 10 moles of hydrogen. 0.0885 mol C4H10 * (10 moles of hydrogen/ 1 mol of C4H10) = 0.885 moles of hydrogen LINKS General Chemistry…

FacebookTweetPin Write a balanced equation for the reaction of gaseous carbon monoxide with hydrogen gas to form gaseous methane (CH4) and liquid water. Solution: If the question says solid, we need to write (s) next to the compound, liquid means (l), gaseous means (g) and aqueous means (aq). Gaseous carbon monoxide is CO(g). Gaseous hydrogen…

FacebookTweetPin Calculate the mass (in g) of 2.8*1022 H2O molecules Solution: To go from molecules to grams, we will first need to convert molecules to moles using Avogadros number and then convert moles to grams using Molar Mass of the molecule. LINKS General Chemistry Review Transformation Tutoring FacebookTweetPin