A student experimentally determines the density of a metal cube using the caliper method, liquid displacement method, and suspension method. The experimentally determined densities are listed in the table. The cube's true density is 2.0322 g Student's Data Method Caliper Liquid Displacement Caliper Liquid Displacement Cube's Density Suspension 1.89 Suspension Rank the methods in the order of most accurate (1) to least accurate (3). 1.70 2.11 mL I X cm
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- Q How X 2 Conv X 3 USCI: X O Login x b Answ x My H x * Minc x * Mind x о Итал х м Почт х * Appli x O NH4 X ng.cengage.com/static/nb/ui/evo/index.html?elSBN=9781305968646&id%3D160085644&snapshotld=456877& CENGAGE MINDTAP Q Search t oter 4: Forces between Particles Note the positive charge; compare with NH4 †. 4.55. C Predict the shape of each of the following polyatomic ions by first drawing a Lewis structure, then applying the VSEPR theory: a. NH2 (each H is bonded to N) b. PO3- (each O is bonded to P) c. BeCl,- (each Cl is bonded to Be) d. ClO4 (each O is bonded to Cl) e d) ENG 144 prt sc delete home 8 9. + backspace num %3D lock K enter Dy Ho P.Given: The following data for the Oswald viscometer test were determined. Time Density (g/ml) water 24.27 sec 0.9971 solution 1 38.93 sec 1.0399 solution 2 60.87 sec 1.0830 solution 3 95.26 sec solution 4 157.61 sec 1.1166 1.459 Calculate for the viscosity of the solutions. Describe the relationship between viscosity and density of liquids.29-CHEM 101 HW 3-Convers X app.101edu.co Aktiv Chemistry ype here to search Google Translate O EI ASWSUV X G mass of cylinder Google Search X Bronze is an alloy made of copper (Cu) and tin (Sn). The volume of the cylinder is 6.010 x 10³ cm³. The composition of the bronze is 79.42% Cu and 20.58% Sn and the densities of Cu and Sn are 8.94 g/cm³ and 7.31 g/cm³, respectively. Calculate the mass of the bronze cylinder. Question 14.b of 16 acer + 1 4 7 +/-
- The minimum number of centrifuge tubes in a centrifuge machine during its operation is one. * True Falsen eFundi : NCHE 121 1-1 P 202 x b My Questions | bartleby G condenser of the distillation NCHE 121 - Practical test 5 - ADVANCED CHEMISTRY FOR X A docs.google.com/forms/d/e/1FAlpQLSeoSJFyh92VzGCHUJHTnR1Qhr07K-15YDL6mRq2jPckCRyPIQ/formResponse Question 7: Balance the chemical equation in Figure 7 in acid medium. How many moles of sulphuric acid do you have to add to balance this chemical equation? [The answer is a whole number.] * Jou antwoord Figure 7 OH Cr,0,* Cr+ Question 8: Consider the information in your answer to Question 7. What minimum mass in grams of potassium dichromate is required to produce 1.500 grams of the ketone? [Molar masses: Alcohol = 100.159 g-mol-"; Ketone = 98.143 g-mol-; K2Cr2O, = 278.185 g-mol-. [Give only the number without the unit. Round 17:51 P Type here to search 23°C Mostly sunny 2021/10/26 0= 1Must 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…
- For each problem, you must: 1) Calculate the degree of unsaturation. -1 2) Assign the principal IR absorption bands above 1500 cm 3) Draw the structure of the compound 4) Label the protons on your structure with letters and assign them to peaks on the NMR spectrum (see the example below). 4.0 C 2H 3.5 3.0 2.5 D 1H 3.0 This peak is a magnified version of this peak A 2.8 2.0 1H B zum 2.6 B 2H Each problem contains the formula of the compound, the IR spectrum (with axes in cm³¹ vs. % transmission), and the ¹H NMR spectrum (with axis in PPM shift). Some NMR spectra show a peak hovering above the baseline. This is a magnified view of one of the actual peaks, to allow you to see splitting more clearly. 1.5 2.4 OHD A 3H 1.0 PPM 0.5NSIRF J8P3JH-hUBkp4SahozV2zAJZQWQzk-VBhd98uVE3L5BbHc_DkUtSypJbH3ZDdOWuKprUeFfOA.. Apple Uconnect D2L HOME M McGraw-Hill Educ. S Metric Prefixes an.. A ALEKS - Katherine.. A ALEKS - Katherine. •KhanAcademy O kt school Netfli O GASES Using Avogadro's Law Katheri Hydrogen chloride gas and oxygen react to form water vapor and chlorine gas. Whatť volume of water would be produced by this reaction if 3.59 mL of oxygen were consumed? Also, be sure your answer has a unit symbol, and is rounded to the correct number of significant digits. Explanation Check O 2020 McGraw-Hill Education. All Rights Reserved. Terms of Use | Privacy | Accessibility NOV 22 MacBook Pro olo1. excess CH3| 2. Ag20 3. heat N. APR étv MacBook Air 888 F5
- Identify and provide an explanation of the differencesbetween homogeneous and heterogeneous sampling in the context of samplingmethods.M Mathway| Algebra Prol X G rmolar mass of zinc chle x Launch Meeting-Zoom x G 0.16kg to g- Google Se x + www-awu.akeks.com/alekscgi/x/Isl.exe/1o_u-IgNslkr7j8P3jH-lix5uFZIVj2iEJjąd1WoxT77ErtzZZpGbzESWhuQ5KnLFr-AdqJckJ3tzP4DtHEOm2H4pGXeoGQgUw9Q Lco06TW. O GASES, LIQUIDS, AND SOLIDS 三 Using the Kf and Kb equations with electrolytes Jenee The normal freezing point of a certain liquid X is 2.30 °C, but when 74.0 g of barlum hydroxide (Ba(OH),) are dissolved in 900. g of X the solution freezes at -1.4°C Instead. Use this information to calculate the molal freezing point depression constant K, of X. Be sure your answer is rounded to the correct number of significiant digits. °C kg K, = [] mol x10 Check Explanation ©2021 McGraw-Hill Education. All Rights Reserved. Terms of Use Privacy | Acces MO hpALEKS - Alec Nema - Knowledge x G converta^4 to cm^4- Google S x AFreezing Point Depression and Bc X iCPa7ZMmym9SLFOBedXazQM4lzqmR-1UH_pgXn9vQgZypE -→ C合 www-awu.aleks.com/alekscgi/x/Isl.exe/1o_u-lgNs convert m^4 to cm^4- Google Search 出 Apps Sprouts Academy. 6 Online Tutoring C 400 Request Head google.com Question 20 Knowledge Check A NASA spacecraft measures the rate R of at which atmospheric pressure on Mars decreases with altitude. The result at a certain altitude is: 1 R=0.0914 kPa•km Convert Rto J.cm -4 J cm I Don't Know Submit O2020 McGraw-Hill Education, All Rights Reserved. Terms of Us Type here to search II