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- SCH3U Table 15 K¹+ Mg²+ A13+ . Writing Chemical Formulas S²- Br¹- Date: N³-Mail - Mary X D21 Grades - Sp X G when does X Submit Answer AT HOMEWOR 735112480241329813180832311&elSBN=9781305862883&id=1707785907&snapshot!.... References A X Sample A is found to contain 34.9 g of nitrogen and 39.9 g of oxygen. Sample B is found to contain 87.9 g of nitrogen and 201 g of oxygen. Och.1 classif x of Definite and Multiple Proportions: This is group attempt 1 of 10 Use the References to access important values if needed for this question. Two samples that are known to come from binary compounds of nitrogen (N) and oxygen (0) are analyzed. Autosaved at 10:33 PM G Do samples A and B obey the law of definite proportions, the law of multiple proportions, both laws, or neither law? Could A and B be samples of the same compound or are they different compounds? MindTap - ( X Q Search this ☐ Regenerate GILAam.aspX#b 1.008 4.003 Ba 69419.012 11 Na 22.99 2431 10.81 12.01 14.01 16.00 19.00 20.18 13 12 14 15 16 26.98 28.09 30.97 32.07 3545 3995 32 Ge 19 20 21 Se 22 TI 23 25 Cr 24 26 27 28 30 33 34 Ma 35 36 39 10 40.08 44.96 47.88 50.94 52.00 54.9455.85 58.93 58.69 63.55 65.38 69.7272.59 24.92 78.96 79 3ア 38 42 90 83.80 39 40 41 43 44 45 46 Rh Pd 50 Sr Zr Te 51 52 53 $4 Nb Mo Ru As ca 1079 112 414.8118.7121.S 127 6 126.9 131 78 In Sn S 85 47 87.62889191 22 92.919594 (98) 101. Te Xe 102.9 106. 56 57 72 Hr 73 74 75 76 80 81 82 83 84 85 86 Ba La Ta Re Os Ir TI Pb Bi Po Pt Au Hg At 329 1373138 9|178.5 180.9 183.9 186.2190.21922 195.1 197.0 200 6 204.4 2072 209.0 (209) (210)222) 87 88 Ac Fr Ra 223) 226 (227) 89 How many grams are needed to prepare 250.0 ml of 0.2500 M of Potasium Hydrogen phthalate KHP (204.224 g/mol) from the primary standard KHP solid? 1 O 24578 g 2 20 452 g 30 12 764 g 4. O30.124 g
- ce the following equations: _103+ HSO3 + H* + _HSO3 → -√₂ + + _H₂O 103 ->> CamScanner _H* + -1₂ + — SO-2 H₂O 94² + SOA H*Legisla x S Midterm Review Guide x s Unit 3 Legislative Branc x 9 Schoology 9 Chemistry: Section 4|| x 9 Atomic Theory project x A kent.schoology.com/common-assessment-delivery/start/4847085469?action=onresume&submissionld=495973856 Chemistry midterm State the law of conservation of mass. Write out a lab that would help you prove the law. Make sure to explain in detail how the lab would prove the law B = 而 0/ 10000 Word Limit 12 13 14 15 16 17 18 19 20 21 Next > Sign dut bo m20gCuO to particles =
- G.210.What is the chief factor that determines thephysical slateof a sample of matter?The mass of 4.375 x 1016 molecules of compound with the molecular formula C3H9N is ______ g. Report your answer in scientific notation and to 3 s.f. For example, if your answer was 1.076 x 10-10 you would report it as 1.08e-10.
- History stry Bookmarks X O8 https://app.101edu.co FEB 13 Tools Window 80 Aktiv Chemistry F3 Balance the following chemical equation (if necessary): Si₂H3(s) + O₂(g) → SiO₂(g) + H₂O(g) 1 $ + Reset Help SIO₂ O F4 X 04 03- 3 0₂ 03 ) + F5 Question 40 of 47 0²- 4 0 ↑ H₂O < 0- 5 05 □+ ALL F6 6 0 1 MacBook Air 2 2+ & 7 Si₂H3 07 (s) (1) (g) (aq) 4 F7 8 9 0 08 09 Do • x H₂O 4+ ♫ A * 0₂ FB Delete tv w O O DD F9bo A sample of ethanol, C₂H6O, has a mass of 51.25 g. Calculate the number of ethanol molecules in the sample. 20 E 15 D number of molecules: C S 288 R F V % 5 FEB 15 T G BUsing the phase diagram below (figure 2) for the aluminium-magnesium system, determine i. the phases present and ii. the composition (wt% Mg) of each phase and i. the amount of each phase for: a. an aluminium-magnesium (5 wt % Mg) alloy at 500 °C. b. an aluminium-magnesium (20 wt % Mg) alloy at 550 °C. с. an aluminium-magnesium (80 wt % Mg) alloy at 300 °CSEE MORE QUESTIONS
