CHEM 120 Week 1 Assignment (20 Points)
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$15.00
Institution | CHEM 120 Introduction to General, Organic, and Biological Chemistry with Lab |
Contributor | Amanda |
For the two problems given below, show ALL work and always write appropriate units at all times
- You have samples of 3 different dandelion poisons. They cost $10 a gallon, $20 a gallon and $30 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. (1 point)
- If a medicine has a dosage of 20 ml, how many doses are in a 4 gallon bottle? (1 point)
- If you have a car that gets 30 miles to the gallon and fuel currently costs $2.60 a gallon, how many miles can you drive if you have 5$ worth of fuel? (1 point)
- Aluminum has a density of 2.7 g/cm3, how much space in cm3 would 100 grams of aluminum occupy? (1 point). Show all work.
- Give the masses, charges, and names of the 3 subatomic particles. (1 point for each row: 3 points total).
- Explain what an atom is and how it is structured. 1 point.
- 2.92 inches = 2.92 x 2.54 = 7.42 cm (1 point)
- 16500 µl = .0044 gallon (1 point)
- 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 kilogram (kg). (1 point)
- Identify the following as physical or chemical properties. (3 points, 0.5 point each)
- If an atom contains 18 protons and 20 neutrons, its atomic number is 18 and mass number is 38 (20neutrons +18 protons). It has 18 electrons. Show calculation where applicable. Identify the element and write its full name and chemical symbol. (0.5 points a blank 1.5 points total)
- If an atom contains 2 protons and 5 neutrons, its atomic number is 2 and mass number is 7 (2 protons + 5 neutrons). It has 2 electrons. Show calculation where applicable. Identify the element and write its full name and chemical symbol. (0.5 points a blank 1.5 points total)
- Complete the following Table based on information given about the element Boron. (0.75 points each row, 3 points total).
Instituition / Term | |
Term | Year 2022 |
Institution | CHEM 120 Introduction to General, Organic, and Biological Chemistry with Lab |
Contributor | Amanda |