CHEM 120 Unit 1 Connect Assignment graded with all answers correct

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For the problems given below, show ALL work and always write appropriate units at all times. Question: You have samples of 3 different sanitizer bottles. They cost $10 a gallon, $20 a gallon and $3... 0 a gallon respectively. You would like to determine which one is the most effective. State your hypothesis, design an experiment, and state a result that would support your hypothesis. (3 points) Question: If a medicine has a dosage of 20 ml, how many doses are in a 4-gallon bottle? (2 points) Week 1 Assignment Practice For the two problems given below, show ALL work and always write appropriate units at all time Question: Convert your weight in pounds into Kilograms(2 points) Now change your weight from kilograms to grams. Question: If a medicine has a dosage of 2000 ml, how many gallons of fluid is that? This is a 2 step problem. Question: Aluminum has a density of 2.7 g/cm3, how much space in cm3 would 100 grams of aluminum occupy? (2 points) Question: Give the charges, and names of the 3 subatomic particles. (1 point for each row: 3 points total). Question: 92 inches = _______ cm (2 points) Question: 16500mL = _______ gallon (2 points) Question: If the density of a metal bar is 3.47 g/mL and volume is 30 mL, calculate the mass of the metal bar in gram (kilo). (2 points) Question: Identify the following as physical or chemical properties. (3 points, 0.5 point each) Question: If an atom contains 18 protons and 20 neutrons, its atomic number is __________ and mass number is ___________. It has ____________ electrons. Show calculation where applicable. Identify the element and write its full name and chemical symbol. (2 points) Question: If an atom contains 2 protons and 5 neutrons, its atomic number is ____________ and mass number is _________. It has ___________ electrons. Show calculation where applicable. Identify the element and write its full name and chemical symbol. (2 points) Question: Complete the following table based on information given about the element Boron. (1 point each row, 4 points total). [Show More]

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