2.65 How many protons and neutrons are in the nucleus of the following atoms? (a) 27A1 (d) 207PB (b) 32s (c) 64Zn

hrome File Edit View History Bookmarks Profiles Tab Window Help 56% O Fri 4: St. John's University - My Appl x A ALEKS - Iffat Khan - Learn + A www-awn.aleks.com/alekscgi/x/lsl.exe/1o_u-IgNslkr7j8P3jH-lijkPWvZoZLqKt1FLIq7wcPWKzBYGfE9IMFjmjhOdH_SyFuybOA6NIIU_F3qHYTiQI6Ca5ojhYwiUE.. O STOICHIOMETRY Finding mole ratios from chemical formulae This is the chemical formula for acetic acid (the chemical that gives the sharp taste to vinegar): CH,CO,H An analytical chemist has determined by measurements that there are 42. moles of carbon in a sample of acetic acid. How many moles of hydrogen are in the sample? Round your answer to 2 significant digits. mol Check Explanation O 2021 McGraw-Hill Education. All Rights Reserved. Terms of Use Privac étv II

esc mb V ps lock Ft ! 1 control 141 PI Q >> A @ 2 * F2 28. NR # 80 F3 $ 888 FA % 20 FO A 244 FO & 44 F7 Aa * D'Il FB Some matches consist of a wooden stick and a head that contains tetraphosphorous trisulfide, P4S3(s), and that can be ignited on any rough surface. When the match is drawn across a rough surface, enough heat is generated to start the reaction represented by the following equation. and pur The energy that is transferred when 69.1 g of XeF4(s) is produced is DD FO Use the following information to answer the next question. Xenon tetrafluoride is a binary compound made from a noble gas. The formation of xenon tetrafluoride can be represented by the following equation. Xe(g) + 2 F₂(g) → XeF4(s) AH=-251 kJ Use the following information to answer the next two questions. DIDIOMBATILAI P4S3(s) + 8 O₂(g) → SO₂(g) A,HP,S, (S) A,HO P.O₁0(s) J F10 kJ. P4010(s) + 3 = -155.0 kJ/mol = -2 984.0 kJ/mol TULBUR di F11 F12 IN G elete 1 urn ift

Ba(NO,l(aq) + K,SOlaq) Baso(s) + 2 KNOlaq) Volume Volume Trial 0.10 M Ba(NO)2 (ml) 0.10 M K,SO, (ml) Mass Baso4 (s) Limiting Reagent 50. 20. 0.46 50. 40. 0.92 3 50. 50. 1.15 4 50. 60. 1.15 50. 80. 1.15 • Question 8 Use the data to identify the limiting reagent for each reaction performed. V Trail 1 a. Neither/Both EV Trial 2 b. Baso4 EV Trial 3 C. KSO4 EV Trial 4 d. Ba(NO3)2 EV Trial 5 e. KNO3 Question Help: Message instructor I Calculator Submit Question • Question 9 Why is the amount of precipitate in the Data Table above the same in Trials 3 through 5? Edit Insert Formats B IVX x' A

AutoSave w | homework – Saved to my Mac OFF ... Home Insert Draw Design Layout References Mailings Review View O Tell me R Share O Comments Calibri (Bo. v 11 v A A E vE v E v E E Aa v AaBbCcDdEe AaBbCcD AaBbCcDdE AaBb AaBbCcDdEe Paste BIU V ab x, x A v I v A v No Spacing Normal Heading 1 Heading 2 Title Styles Pane Dictate Sensitivity Please answer the following questions fully and to the best of your ability 1) Please state how you would synthesize the following polymer below and show the mechanism behind the reaction. Note that this also means you need to tell me which molecule you are starting with as well as specifying all conditions required. он OH 2) Will either the polymer or the monomers you used to make it show peaks if IR spectroscopy analysis was done on them, and if so where? How about if UV-vis spectroscopy was performed instead? Page 1 of 1 93 words E English (United States) O Focus 白

Using the proper conversion factor, convert 8.4 ft? into cm2. ! cm? Save for Later Last saved 1 day ago. Saved work will be auto-submitted on the due date. Auto- submission can take up to 10 minutes. Part 3 The parts of this question must be completed in order. This part will be available Part 4 Te ortc of thic question must he comnleted in order This part will be available

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Why should you wear black in the winter and white in the summer? should be an original thought, not Google’s 3-4 sentences asap please!! will rate!! Thank you!!

All changes save 7. When two solutions are mixed, a color change occurs. The data tables show the time between mixing and the color change for two sets of conditions. For Condition One, the solution concentrations were constant and temperature varied. For Condition Two, the temperature was constant and concentrations varied. Condition One: Concentration Time for Temperature (°C) Sample Color to Change 1 10° 36 sec 22° 14 sec Condition Two: Temperature Time for Concentration Sample Color to % Change 1. 100% 15 sec 2. 50% 24 sec Which of these statements is true according to the data? O The reaction rate is greater at 22°C than at 10°C. O Reducing the temperature increases the rate of the reaction. The reaction is affected by changes in temperature not by changes in concentration. O Decreasing the concentration increases the reaction rate. PREVIOUS 17 of 25 NEXT SAVE & EXIT

In our first lab experiment we will be identifying metals by measuring theirdensities and comparing them to known values. Here at NJIT we have a very large and generouslaboratory materials budget, so all sorts of exotic and extremely valuable metals will be providedfor the experiment. Using the values listed below, determine the identity of the metal samples.If the density value determined is not amongst the values below then one of those cheapRutgers samples crept into our stock of metal samples and you should answer “unknown metal”.Note: volume measurements are not very exact. If your density determination is off by 0.1 or0.2 from the known value, that’s probably good enough for an identity. Table in image 4a. You weigh your sample and determine it weighs 71.8 grams. You put the sample into 15.6 mL ofwater and the total volume rises to 22.4 ml. What metal do you have?4b. You weigh your sample and determine it weighs 56.3 grams. You put the sample into 28.9 mL ofwater and the total…