Scin 131 quiz 4 Study guides, Class 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...

Question 5 of 32 3.0/ 3.0 Points `I was wading in the creek and discovered what I thought to be a small meteorite. I took a small sample of it home, ran some fancy schmancy chemical tests on it, and determined it was 18.0% chromium by mass. How many grams of this meteorite would I need to be able to have 15.0 g of chromium?  A. 100  B. 120.0  C. 2.7  D. 83.3 Feedback: Great! Mass percent discussed in Chapter 6.2. Question 6 of 32 3.0/ 3.0 Points Since 1983, pennies h...

SCIN 131 Lesson 4 QuizSCIN 131 Lesson 4 Quiz Question 1 of 12 4.0/ 4.0 Points `In terms of the size of the atom, which of these is the smallest? A.Ne B.Be C.O D.B E.Li Answer Key: A Feedback: Good. See section 9.9 Question 2 of 12 4.0/ 4.0 Points `If you were to put the different wavelengths of the electromagnetic spectrum (as discussed in THIS lesson) in the correct order from shortest to longest, which would be third? A.ultraviolet B.microwaves C.infrared D.x-rays E.radio waves ...

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 The result of collisions between gas molecules and the surfaces around them is: A.mass B.temperature ...

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 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 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...