Scin131 Study guides, Class notes & Summaries

Question 1 of 25 4.0/ 4.0 Points `One of the first chemical WMDs, researchers initially produced VX nerve agent for retail sale in the 1950s as a pesticide. Thankfully, your likelihood of coming in contact with VX is extremely low - the world's stockpiles have been destroyed, including the United States' main stockpile in Anniston, AL. The molecular formula for this nerve agent is C11H26NO2PS, and it has a molar mass of 267.37 g/mol. Given this information, what is its empirical formula?...

Lesson 04 - Week 04 Quiz Return to Assessment List Part 1 of 3 - 44.0/ 52.0 Points Question 1 of 25 4.0/ 4.0 Points `Eureka! I've discovered a new compound! Yay for me. I have determined that its empirical formula, but in order to determine its actual molecular formula, I need to know which of the following? • A. the number of moles of the compound in a 1.00 g sample of the substance • B. the density of the compound • C. the boiling point and freezing poin...

CHEMISTRY IS THE SCIENCE OF WHAT MATTER DOES BY STUDYING ATAM AND MOLECULES. THEORIES ARE VALIDATEB BY... EXPERIMENTS A BRIEF STATEMENT THAT SUMMARIZES PAST OBSERVATIONS AND PREDICT FUTURE ONES IS CALLED SCIENTIFIC LAW THE SCIENTIFIC METHOD EMPHAIZES OBSERVATION AND EXPERIMENTATION. A THERORY BEFORE IT BECOME WELL ESTABLISHED HYPOTHESIS THE FIRST STEP IN THE SCIENTIFIC METHOD OBSERVE SOME ASPECT OF NATURE THE CONNECTION THAT HOLD ATOMS TO EACH OTHE...

SCIN131_Week_1_Quiz

SCIN131 QUIZ 3 2024 WITH REAL EXAM QUESTIONS AND CORRECT ANSWERS GRADED A+ Part 1 of 2 - 56.0/ 60.0 Points Question 1 of 25 4.0/ 4.0 Points `If you were to count the numbers of each type of atom in the formula Ca3(PO4)2, what would the answer be? • A. Ca = 3, P = 1, O = 8 • B. none of these • C. Ca = 3, P = 1, O = 4 • D. Ca = 3, P = 2, O = 4 • E. Ca = 3, P = 2, O = 8 Feedback: use formula to count. Use naming rules and charge balancing. Topic discussed in 3.7 and 4.3....

SCIN131 QUIZ 1 WITH REAL EXAM QUESTIONS AND ANSWERS Question 1 of 25 4.0/ 4.0 Points How many significant figures will be in the final answer of this calculation? (3.8 - 0.72) × 12.36 = A. 2 B. 3 C. 4 D. 6 E. none of the above Feedback: Good. Significant figures are discussed in Chapter 1. Question 2 of 25 4.0/ 4.0 Points

SCIN131 QUIZ 4 2024 WITH REAL EXAM QUESTIONS AND ANSWERS SCOREDA+ Question 1 of 25 4.0/ 4.0 Points `One of the first chemical WMDs, researchers initially produced VX nerve agent for retail sale in the 1950s as a pesticide. Thankfully, your likelihood of coming in contact with VX is extremely low - the world's stockpiles have been destroyed, including the United States' main stockpile in Anniston, AL. The molecular formula for this nerve agent is C11H26NO2PS, and it has a molar mass of ...

SCIN131 QUIZ 6 2024 WITH REAL EXAM QUESTIONS AND 100% CORRECT ANSWERS SCORED A+ Question 1 of 25 4.0/ 4.0 Points `I'm looking at the barometer in my lab as I type this question. It says the pressure is 760 torr. What is this pressure expressed in mm Hg? • A. 1 • B. 760 • C. 14.7 • D. 29.92 Feedback: Great! Gas Laws discussed in Chapter 8. Question 2 of 25 4.0/ 4.0 Points I have a sealed cylinder in my lab that contains 250 L of gas. If I keep temperature the same and decr...

SCIN131 QUIZ 3 2024 WITH REAL EXAM QUESTIONS AND CORRECT ANSWERS

SCIN131 QUIZ 4 2024 WITH REAL EXAM QUESTIONS AND ANSWERS