HOMEWORK: GRADE 7. DIRECTION: Perform the following operationally. Use ½ crosswise intermediate paper as your answer sheet. 1. Calculate the percentage concentration in following solution? a. 2g of sucrose in 80g of water b. 10ml ethanol in 50ml solution 2. What is the percentage by mass of sodium nitrate in a solution made by dissolving 8.50 gram of sodium nitrate in enough water to give 88.88 gram of solution? 3. A 15ml of benzene and sufficient carbon tetrachlorate were mixed to make a 50ml solution. Determine the concentration of benzene in percent by volume.
Posted on: Thu, 27 Jun 2013 09:20:01 +0000