Subscripts Guides d'étude, Notes de cours & Résumés

Chapter 03 Stoichiometry: Ratios of Combination 1. Calculate the molecular mass of tetraphosphorus decaoxide, P4O10, a corrosive substance which can be used as a drying agent. A. 469.73 amu B. 283.88 amu C. 190.97 amu D. 139.88 amu E. 94.97 amu 2. Calculate the formula mass of rubidium carbonate, Rb2CO3. A. 340.43 amu B. 255.00 amu C. 230.95 amu D. 145.47 amu E. 113.48 amu 3. Calculate the formula mass of (NH4)3AsO4. A. 417.80 amu B. 193.05 amu C. 165.02 amu D. 156.96 amu E. 108.96 a...

tasteless, organic compounds correct answer: vitamins vitamins are required in small or large amounts correct answer: small vitamins help regulate correct answer: metabolism vitamins help convert energy in fat, carbs, and protein into correct answer: ATP vitamins promote ____ and ____ correct answer: growth and reproduction T/F: vitamin deficiencies can result in potentially serious symptoms correct answer: T when were vitamins discovered correct answer: about 100 years ...

CHEM 131 Introduction to Chemistry with Lab Test | Guide 2023. Suppose you were tasked with producing some nitrogen monoxide (a.k.a. nitric oxide). I'm sure this is often requested of you. You can do it by combusting ammonia (be careful!). The equation would be as follows: 4NH3 + 5O 2→ 4NO + 6H2O. If you form 3.50 mol of water, how much NO forms? A.2.33 mol. B.4.00 mol. C.4.50 mol. D.6.75 mol. E.none of the above Answer Key: A Feedback: Good. See section 8.6 Question 9 of 12 0.0/ ...

ABCTE- Basic Chemistry Part 2What is a chemical reaction - correct answer a chemical reaction? Some indications of a chemical reaction include what - correct answer a change in temperature, such as in fire, a color change that indicates the presence of a different substance, and the generation of electrical current by a battery. Chemical reactions are written using what - correct answer shorthand similar to a mathematical equation. reactant A + reactant B product C + product D Unli...

CMPSC 201 Final Exam Clicker Questions and Answers 2023 with complete solution In C++, the elements of the array (values stored in the array) must be A. of the same data type B. floating point numbers C. whole number D. positive whole numbers E. Boolean values A. of the same data type Which of the following would create an array that would hold up to 50 floating points numbers? A. float my array[51]; B. float my array[50]; C. in abc[50]; D. double xyz[50]; E. double xyz[49];...

Your initial post in the discussion this week consists of two parts. First, choose a molecule used in healthcare, industry, or found in a natural source and discuss the importance of this molecule. Be sure to include at least one outside source and make sure to follow APA citation guidelines. In the second part of your initial post, we will be practicing naming ionic and covalent compounds as well as polyatomic ions. To begin, give the chemical formula for each of the following: A covalent comp...

ABCTE- Basic Chemistry Part 2What is a chemical reaction - correct answer a chemical reaction? Some indications of a chemical reaction include what - correct answer a change in temperature, such as in fire, a color change that indicates the presence of a different substance, and the generation of electrical current by a battery. Chemical reactions are written using what - correct answer shorthand similar to a mathematical equation. reactant A + reactant B product C + product D Unli...

symmetric key encryption correct answers encryption method that uses the same key to encrypt and decrypt the data asymmetric key encryption correct answers encryption method that uses different keys to encrypt and decrypt the data. Each user has two keys, one public and one private key exchange protocol correct answers 1. A sends to B E(Kpub-B,(E(Kpriv-A,K)) where K is the symmetric key 2. B uses Kpriv-B to decrypt the Kpub-B encryption 3. B uses Kpub-A to decrypt the Kpriv-A enc...

What molality of pentane solution is obtained by dissolving 5.0 g pentane, C5H12, in 245.0 g hexane, C6H14? Enter your answer with two decimal places and no units. Molar mass pentane: 72.15 g/mol Molar mass hexane: 86.18 g/mol - 0.28 5 g pentane x (1 mol/ 72 g)= 0.069 mol pentane 245g > .245 kg hexane 0.069 mol/ .245= 0.28 If an aqueous CsCl solution is 7.28% CsCl (by mass) and has a density of 1.05 g/mL at 20.°C,what is the expected boiling point of the solution? Kb = 0.51°C/m for ...

Tests & Quizzes SCI 131 WEEK QUIZ QUESTIONS AND ANSWERS Lesson 05 - Week 05 Quiz Return to Assessment List Part 1 of 1 - 100.0 Points Question 1 of 25 `Sodium and chlorine are very dangerous by themselves. However, when we combine them together in a chemical 4.0 Points reaction, we eat it--it's table salt: 2Na + Cl2 → 2NaCl. If I want to make 50.0 g of my own salt (because I can and that's how I roll), how much elemental sodium would I need? NOTE: All numbers locate...

Atomic Structures - correct answer Know all the problems except #7,14,15 When looking at the atomic structure what does the left-hand subscript represent - correct answer Left hand subscript = atomic number When looking at the atomic structure what does the left-hand superscript represent - correct answer The mass number Where on the atomic structure would we find the ionic change (if the isotope has one) - correct answer On the right hand super-script The mass number = a com...