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A: Repeatness means to perform an experiment again and again.
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- Constants I Periodic Table Part F State the volume at STP for 1 mol of hydrogen fluoride, HF. Express your answer to three significant figures and include the appropriate units. HA V = Value Units Submit Request Answer Part G State the number of molecules for 1 mol of sulfur hexafluoride, SF6. Express your answer using three significant figures. ΑΣφ molecules P PearsonnHMAC%3Def41415d9158412623399163083b2ede#10001 Spr. 2021 8 Gu HI, Leira v Sign Out Item 4 I Review | Constants | Periodic Table Alexandra decides to climb Mt. Krumpett, which is 5000 m high. She determines that this will require a total of 2250 kcal of energy for the trip. For her food supply, she decides to take nutrition bars. The label states that each bar contains 50 g of carbohydrates, 10 g of fat, and 40 g of protein. Part A How many nutrition bars should Alexandra pack? Express the number of bars numerically. > View Available Hint(s) ν ΑΣφ bars Submit Previous Answers 0V 12:33What is the molar mass of unknown Z, .0578g and 1.12 x10 -3moles. 2$ 4 5 dele R Y F G H. K L
- two groups were asked to prepare 250 ml sodium hydroxide (NaOH) stock solutions using 0.0625 g of solid NaOH and water for their chemistry class. The table below shows the recorded measurements obtained bu the two groups:Group x = 0.0626g 0.0627g 0.0624g 0.0623gGroup y = 0.0620g 0.0622g 0.0627g 0.0628ga.which group has most accurate resultb. what are the standard dev of group x and group y (6 decimal places)c.which group has precise measurementWhen asked to record the buret reading shown below, a student wrote down a reading of 15.300 mL. mL 15 16 Indicate if their reading is correct or why it is incorrect. Select one: O Their reading is correct. O The solution level was read incorrectly. O The student did not record to enough decimal places. O The reading has too many decimal places.E Account Balance esc 0 O STATES OF MATTER Using Avogadro's Law Explanation 52°F Mostly cloudy 1 A Z v Carbon disulfide gas and oxygen gas react to form sulfur dioxide gas and carbon dioxide gas. What volume of sulfur dioxide would be produced by this reaction if 7.7 cm of carbon disulfide were consumed? 3 Also, be sure your answer has a unit symbol, and is rounded to 2 significant digits. ? @ 2 Give to Queensborough X B Announcements - 2022 P X https://www-awu.aleks.com/alekscgi/x/Isl.exe/10_u-IgNslkr7j8P3jH-IBMBkpcnaFu0F7Uj... A 20 S X W Check X Schedule Builder # 3 E $ C 4 8 0.0 R X X % "do 40 09 V 5 T S DEG fo 4- 6 Y d+ & H 7 U B N 144 * 8 to Dell M ( 9 K Ⓒ2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Access ☎ (l) D W Ⓒ A ↓ 12:32 F 11/3/20 < DDI ✓ ) O A ALEKS-Chisom Obidiegw X B O ▬▬▬▬ 3/5 O D P { + [ ? = + prt sc A } € ♡ 1 Chi backspace pause
- 13. Richards and Willard determined the molar mass of lithium and collected the following data.Experiment Molar mass, g/mol1 6.93912 6.94073 6.94094 6.93995 6.94076 6.93917 6.9406 (a) Find the mean molar mass determined by these workers.(b) Find the median molar mass.(c) Assuming that the currently accepted value for the molar mass of lithium is the true value, calculate the absolute error and the percent relative error of the mean value determined by Richards and Willard.Chemistry temp: 8C, density 0.800 g/ml based on this data, how many molecules are contained in 30ml of ethanol at 8C? (MM of ethanol is 46.08 g/mol) a.) 8.6 x 10^-25 molecules b.) 3.1 x 10^25 molecules c.) 4.9 x 10^23 molecules d.) 6.7 x 10^26 moleculesMasses of compounds used and observations NaCI CuSO4-5H20 Bright blue crystaline solids (NH4)2Fe(SO4)2 pale, Blue-green crystalline solid colorless Crystals Appearance of solid Mass of vial and 12.8364 12.7398 12.9445 compound (g) Mass of emptied vial (g) 11.6023 11.4888 11.9221 Mass of compound used (g) 1.2341. 1.2510. 1.0224 Volume of prepared solution = Type response here. Mass of sodium chloride used = Type response here.
- 1. Calculate the normality of potassium permanganate (MW: 158.034 g/mol) if 0.2142 g of sodium oxalate (MW 134g/mol) consumed 29.0 mL of potassium permanganate. A 0.1102 N B. 0.1059 N C. 0.1054 N D. 0.1025 N E. None of the choices23. Which equation is incorrect? Assume that T1 and T2 are in Kelvin units. A. V2/V1 = P1/P2, for a given quantity of a gas at constant temperature B. P1V1T2 = P2V2T1, for a given quantity of a gas. C. V1/V2 = T1/T2, for a given quantity of a gas at constant pressure. D. T2/T1 = V1/V2, = constant, for a given quantity of a gas at constant pressure %3D %3D %3D1LDA 2) 10. Br OH GMH,SO,/A NH2 11. NH2 12.