Scin 131 week 4 Study guides, Revision notes & Summaries

SCIN 131 WEEK 4 Exam QUIZ Questions With Answers Latest Graded. A sample of pure lithium carbonate contains 18.8% lithium by mass. What is the % lithium by mass in a sample of pure lithium carbonate that has twice the mass of the first sample?  A. 75.2%  B. 18.8%  C. 9.40%  D. 37.6% Feedback: Mass percent discussed in Chapter 6.2. Question 5 of 25 4.0/ 4.0 Points `I have some aliens in my basement who have developed a chemical weapon in an attempt to escape. I was able...

SCIN 131 WEEK 4 QUIZ (Questions With Answers) Latest GRADED A. What is the empirical formula for a compound if the compound contains 49.97% carbon, 10.51% hydrogen, and 39.52% fluorine by mass?  A. C2H5F2  B. C2H5F  C. C4H10F2  D. C4H10F4 Feedback: Great! Empirical Formula discussed in Chapter 6.2. Question 8 of 25 4.0/ 4.0 Points `One of the compounds listed below represents an empirical formula. Which one?  A. C22H34O10  B. C5H12O2  C. C6H6  ...

SCIN 131 Week 1 quiz SCIN 131 Week 1 quiz Questions & Answers Graded A SCIN 131 Week 1 quiz Question 1 of 25 4.0 Points Which of the following is a law? A.The universe began as a cosmic explosion called the Big Bang. B.A stone dropped from an altitude of 450 m falls to the ground in 9.6 s. C.A body in motion stays in motion unless acted upon by force. D.The star closest to Earth is moving away from Earth at high speed. Question 2 of 25 4.0 Points T...

SCIN 131 WEEK 4 QUIZ Complete With Answers Latest Graded 100%. 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, wh...

SCIN 131 WEEK 4 QUIZ (Questions with Answers) Complete Latest Graded 100%. A sample of pure lithium carbonate contains 18.8% lithium by mass. What is the % lithium by mass in a sample of pure lithium carbonate that has twice the mass of the first sample?  A. 75.2%  B. 18.8%  C. 9.40%  D. 37.6% Feedback: Mass percent discussed in Chapter 6.2. Question 5 of 25 4.0/ 4.0 Points `I have some aliens in my basement who have developed a chemical weapon in an attempt to escape....

SCIN 131 Week 4 Exam Quiz 2023 (Questions with Correct Solutions) Graded. A sample of pure lithium carbonate contains 18.8% lithium by mass. What is the % lithium by mass in a sample of pure lithium carbonate that has twice the mass of the first sample? • A. 75.2% • B. 37.6% • C. 18.8% • D. 9.40% Feedback:Great! Mass percent discussed in Chapter 6.2. Question 11 of 25 4.0/ 4.0 Points `One of the first chemical WMDs, researchers initially produced VX nerve agent for retail sa...

CHEMISTRY SCIN 131 Week 4 Quizess (Questions with Correct Solutions) Nicotine (C10H14N2), a member of the nightshade family of plants, is an oily liquid that makes up between 0.6 to 3% of a cigarette's mass. Contact with the liquid pure form can cause death within hours, as nicotine passes through the dermis and heads directly for the bloodstream. Overdoses and death can easily occur in those smoking cigarettes with nicotine patches applied on their body. How many nicotine molecules are i...

CHEMISTRY SCIN 131 Week 4 Quizess | Questions with Correct Solutions. 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 point of the compound • D. the molar mass of the compound. • E. non...