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ACS Chemistry 1151 Exam 2023 with 100% correct answers

Accuracy? - correct answer Closeness of measurements to the TRUE VALUE of what is being measured Precision? - correct answer Closeness of a SET of measurements How do you calculate Percent Error? - correct answer I experimental-accepted I ____________________ x 100 accepted value Are zeros infront of non-zero digis significant? - correct answer Nope! ex: 0.0071 is only 2 sig figs Are zeros at the end of a number and to the right of the decimal significant? - correct an...

Acids & Bases: 1. All are examples of Lewis acid-base reactions except (A) Cu2+(aq) + 4NH3(aq) →← [Cu(NH3)4]2+(aq) (B) HCl(g) + NH3(g) → NH4Cl(s) (C) H+(aq) + OH-(aq) →← H2O(l) (D) 2Na(s) + Cl2(g) → 2NaCl(s) - correct answer (D) 2Na(s) + Cl2(g) → 2NaCl(s) 2. According to the Lewis definition, an acid is a species (A) having a hydrogen ion. (B) donating a pair of electrons. (C) accepting a pair of electrons. (D) accepting a hydrogen ion. - correct answer (C) accepting ...

ideal gas law conditions - correct answer low pressure, high temperature boyle's law - correct answer p1v1=p2v2 gases are highly _________ - correct answer compressible gases expand ________ to fill the container they are placed in - correct answer spontaneously the distance between molecules in gases are _____ - correct answer far apart in gases 1 mol of any gas at STP is - correct answer 22.4 liters the lighter the gas, _____ - correct answer the faster the eff...

What is the difference between a homogeneous and heterogeneous mixture? Can they be separated? - correct answer A homogeneous mixture is a uniform composition throughout whereas a heterogeneous mixture has other substances. They can be separated but through physical processes. What is the difference between a physical and chemical property? Physical vs chemical change? - correct answer A physical property is one that can be determined without changing the identity of the mat...

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...

According to the Lewis definition, an acid is a species that _____________ a pair of electrons - correct answer accepts A system of two nuclei where each atom donates one electron to the other atom is called a ______________ bond - correct answer covalent Reactant molecules are forming products as fast as ____________ are reacting to form reactants - correct answer product molecules Chemical equilibrium is the result of ___________ reactions attaining equal speeds. - correct answ...

Layout of an element (mass # & atomic #) - correct answer atomic number = - correct answer # of protons mass number = - correct answer # of protons + neutrons the number of protons in a neutral atom will equal the - correct answer # of electrons how to find the correct number of neutrons - correct answer mass number - atomic number Forms of the same elements that differ in amount of neutrons - correct answer isotopes What particle, if lost from the nucleus, would N...

What do the next flashcards cover - correct answer Basic overall guidance relevant to the paper BASICS - correct answer Calculate time. Break down requirements. Read the scenario and highlight areas, ideas and points relevant. Calculate time remaining for each question. Prepare answer using sub headings. Answer all questions. How much do I need to write? Analysing the requirement - correct answer The wording of the requirement will provide guidance on the extent to which each of your...

How many credit hours are needed to complete the AA, AS, AE, and AFA degrees? - correct answer 60-61 credit hours Which 2 English classes are required for students who are pursuing an AA, AS, AE or AFA degree? - correct answer ENG 111, ENG 112 Which courses satisfies the COM/Humanities & Fine Arts requirement for AA & AS degrees? - correct answer COM 231, ART 111, ART 114, ART 115, ENG 231, ENG 232, ENG 241, ENG 242, MUS 110, MUS 112, PHI 215, PHI 240 Which courses satisfies the S...