Chem 120 assignment Study guides, Class notes & Summaries

CHEM 120 Week 5 Assignment; Redox and Organic Chemistry (20 points)

CHEM 120 Week 3 Assignment; Stoichiometry and Solution Chemisrty

CHEM 120 Week 1 Assignment; Remediation Dropbox

CHEM 120 Week 7 Quiz Assignment (Highly Rated Paper) Questions and Answers

For the problems given below, show ALL work and always write appropriate units at all times. 1. Question: You have samples of 3 different sanitizer bottles. 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. (3 points) 2. Question: If a medicine has a dosage of 20 ml, how many doses are in a 4-gallon bottle? (2 poin...

CHEM 120 / CHEM120 Week 6 Assignment GRADED A+ / CHEM 120 / CHEM120 Week 6 Assignment GRADED A+

1. In your own words, describe what is occurring during the process of electron beta decay, explaining what is ejected from the unstable nucleus and focusing subatomic changes. (2 points for clear and accurate description). 2. Write balanced chemical reactions for the following: (1 point each, 4 points total) a. Cobolt-60 undergoes beta decay b. Americium-241 undergoes alpha decay c. Copper-60 undergoes positron emission d. Gallium-66 undergoes electron capture 3. Strontium-89 is an is...

1. In terms of electrons, what is an excited state? Give an example of an electron configuration for an excited state. (1 points) 2. Give the ground state electron configuration for Fe. (1 points) 3. What is a valance electron? How many valance electrons does Si have? (1 points) 4. What is the shorthand electron configuration of a potassium ion (K+)? (1 points) 5. Give the chemical formula (with charge) for each of the following polyatomic ions: (0.5 points each, 2.5 points total) 6. What ...

Solve these ideal gas law problems. Show all work for credit. 1. A gas occupies 250 mL at 739 mmHg. For a gas at constant temperature, determine the volume of gas at 514 mmHg. (1.5 points) 2. Use the molar volume of a gas, at STP, to determine the number of moles of CO2 in 4.00 L of CO2 gas. (1.5 points) 3. A sample of nitrogen (N2) has a volume of 50.0 L at a pressure of 2 ATM. What is the volume of gas at a pressure of 15 atm, if there is no change in temperature? (1.5 points) 4. A 0.6 L...