Chamberlain College of Nursing CHEM 120 Comprehensive Assignment- Key math problems
dentify an atom that has 4 protons and 6 neutron. What is the number of electrons in that atom? Calculate mass number. Beryllium (Be) Has 4 electrons Mass number = 4+6 = 10 If the number of neutrons are 6, then the mass number will be sum of neutrons and protons 6+4 = 10 Pick any nonmetric to metric equality and convert it. For example, 8.9 lb = _______________ g To find out how many grams in "x" pounds (lb), multiply the number of pounds by 453.59237. 1 lb (pounds) equals 453.592 grams Therefore, 8.9 lb (pounds) = 453.59 x 8.9 = 4037.04 gm A gas at a pressure of 10 atm occupies a volume of 50 mL. Assuming constant temp., determine the volume at 0.75 atm. At constant temperature you can refer to Boyle's Law: P1V1 = P2V2 P1 = 10 atm V1 = 50 ml P2 = 0.75 atm V2 = ? ml (10 atm)(50 ml) = (0.75 atm)(x ml) x = 667 ml = 670 ml A gas at a temperature of 10 degrees C occupies a
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