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- 70 Ga 31 Express your answers as integers separated by commas. ? Np, Nn, Ne = Submit Request AnswerWeight of coin 1 (g) 11.4286 Weight of coin 2 (g) 11.4633 Weight of coin 3 (g) 11.4632 Weight of coin 4 (g) 11.5468 Weight of coin 5 (g) 11.5691 Mean (g) 11.4942 SD 0.0604068290841 %RSD 0.53% Check for suspicious outliers by using the Grubb’s test.10 11 12 13 14 15 16 17 18 19 20 Calculate the solubility of BaCro, in water at 25 °C. You'll find K data in the ALEKS Data tab. sp Round your answer to 2 significant digits. Continue MacBook Air
- Perform the calculation and record the answer with the correct number of significant figures. (34.123 +4.20) (98.76546.639) F4 Z $ F5 010 % = A F6 F7 & F8 F9 Ale A- F10 !!! A+ F11 Pause ] F12 Scr Lk PrtSc SysRq +G Unit 4 Test goformative.com/formatives/605a3bd6021bbe6342a71d44 OYouTube Maps 3 4 6. 7. 8. 10 11 12 13 14 15 16 17 18 19 20 21 9. Keyon and Jarred performed the following experiment: A piece of magnesium was placed on a watch glass; the watch glass and magnesium together weighed 2.00 g. They burned the magnesium and it produced bright light, smoke, heat and a white residue. They then weighed the white residue on the watch glass. Watch glass with residue weighed 2.25 g. From this information, they reached separate conclusions: 1 Keyon: The magnesium gained mass, but it was due to some type of problem with their measurements. Jerrod: The extra mass had to come from the oxygen in the air; burning something always means it combines with oxygen. Which student has the best explanation for the gain in weight and why? Keyon because the experiment should be done several times to make sure they are getting accurate measurements. Jerrod is correct because oxygen in the air added mass, by…Chromatography can be used as a means to purify a reaction product or to analyze a reaction mixture. Group of answer choices True False
- Test Tube #2: Unknown sample (KCLO3 + KCL) 1. Determine the weight of unknown heated. 2. Determine the weight of oxygen gas released using the constant weight obtained after completion of the heating's. 3. Determine the number of oxygen gas (0₂) lost? 4. Using stoichiometry, use the number of O₂ gas released to determine the moles of KCLO 3 decomposed, 5. Determine the number of grams of KCLO, decomposed. 6. Based on the number of grams of KCLO, decomposed and the total amount of unknown placed in the test tube, determine the percent KCLO3 present within the unknown.Part D You know that a number 8 less than 60 is the number 52. So, you could rewrite your answer from the previous part as, "What number can you multiply by 4 to get 52?" This is just the definition of 52 divided by 4! So, what is the number x you are looking for? Express your answer as an integer. ΑΣΦ ? x = Submit Request Answer Next > Provide Feedback P PearsonA bucket of water has a volume of 0.473 kL . How many dL is this? STARTING AMOUNT ADD FACTOR ANSWER RESET *( ) 47300 1000 0.001 0.01 10 4730 0.0000473 100 0.473 0.1 1 0.00473 473 0.000473 kL dL +
- Question 1 of 20 A barrel of crude oil has a volume of 42 gallons, only approximately 45% of which is processed into gasoline. If your car achieves 32 mi/gal, and you drive 36,000 miles in one year, how many barrels of crude oil are required to run your car for a year? Tap here or pull up for additional resources9 Schoology 9 Schoology F) Fisher Selence Education 104 FIGURE 1 FIGURE 2 Since the two magnets are not touching, what is responsible for the changes in the balance? O gravity O interaction of magnetic fields interaction of atoms O friction 4. 5 8. 6 9. 7. 1. 2. ubispurse Home n/course.html?courseld%3D15769386&HepID3D169f9f4bdc9f2df8dc5b7368af32865e#10001 e Home troduction to MasteringChemistry 2 of 15 roduction to Numeric Answers Part B When entering large numbers in the answer box, do not use commas. For example, enter 1276400 for the number 1,276,400. Do not enter 1, 276, 400. If you accidentally enter commas, you will receive feedback as a reminder. Answer the following question by typing the numeric answer into the answer box. What is the sum of 9260 and 3240? Express your answer numerically to at least three significant figures. • View Available Hint(s) Eν ΑΣφ sum = Submit Scientific notation You may want to enter 367.000 000 in scientific notatinn as 3 67 x 10° There are twn ways to do this P Pearson Dormicdonc Contact l. Copuriaht 0207 0 Doarcen Education Inc Alrightr rorornd Armr 12:58 hp