Select all of the following reactions that would be expected to provide a positive change in entropy, AS > 0. I. 2K(s) + H₂O(1) 2KOH(aq) + H2(9) II. 2 K (s) + F2 (g) →→2 KF (s) III. 2 Al(s) + 3 Br2 (1)→ Al2Br6(s) O I and II only O III only O II only O I only I and II and III

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Methonor CCHqO, density = 361kg/m), prepponol CC3H8O, density =351KG) ethond (C2H60, donsety= 35,9 kglm) Butonol (CaH,oO density: 380 cglm?) m3 3.374ML f ethonol aue in a stoms of Hydnogen in this amerint of alcóhol sompe. Determine the numler of

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d. CECH 1. 1 eq. CH3CH₂MgBr 2. H3O+ 3. DMSO, COCI2, (CH3CH2)3N, CH2Cl2

Must answer all questions eslse downvote   A. MULTIPLE CHOICE. Choose the BEST answer. PLEASE HELP ME ANSWER EVERYTHING THANK YOU Q)What is used for heating small amounts of solids at a high temperature?a) Mortar and pestleb) Evaporating dishc) Crucible and coverd) Clay triangleQ)Which of the following is used in separation techniques?a-Rubber policemanb-Graduated cylinderc-Volumetric flaskd-Filter paperQ)Which of the following describes a centrifugate?a-Always clearb-Supernatant liquidc-Discarded via decantation onlyd-Solid particlesQThe inward force that pulls substances towards its center is called .a-Gravitational forceb-Centrifotal shiftc-Continental shiftd-Centrifugal forceQA "slippery floor" is considered a .a-hazardb-riskc-flash pointd-toxicantQ)Mrs. Lily Potter is 24 weeks pregnant. She was exposed to a chemical while making a potion. What is the type of the chemical she should be avoiding?a-neurotoxicantb-asphyxiantc-teratogend-carcinogenQ)Which of the following should be…

A. Determine whether the curved arrow(s) shown below generate a valid or invalid resonance structure. Draw the resonance structure that would result from each properly drawn arrow and identify the arrow pushing pattern (i.e. allylic positive charge, allylic lone pair, pi bond between atoms of a different electronegativity, lone pair adjacent to a positive charge, alternating pi bonds in a ring.