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Problem 1 Problem 2 Problem 3 Problem 4 Problem 5 Problem 6 Problem 7 Problem 8 Problem 9 Problem 10 Problem 11 Problem 12 Problem 13 Problem 14 Problem 15 Problem 16 Problem 17 Problem 18 Problem 19 Problem 20 Problem 21 Problem 22 Problem 23 Problem 24 Problem 25 Problem 26 Problem 27 Problem 28 Problem 29 Problem 30 Problem 31 Problem 32 Problem 33 Problem 34 Problem 35 Problem 36 Problem 37 Problem 38 Problem 39 Problem 40 Problem 41 Problem 42 Problem 43 Problem 44 Problem 45 Problem 46 Problem 47 Problem 48 Problem 49 Problem 50 Problem 51 Problem 52 Problem 53 Problem 54 Problem 55 Problem 56 Problem 57 Problem 58 Problem 59 Problem 60 Problem 61 Problem 62 Problem 63 Problem 64 Problem 65 Problem 66 Problem 67 Problem 68 Problem 69 Problem 70 Problem 71 Problem 72 Problem 73 Problem 74 Problem 75 Problem 76 Problem 77 Problem 78 Problem 79 Problem 80 Problem 81 Problem 82 Problem 83 Problem 84 Problem 85 Problem 86 Problem 87 Problem 88 Problem 89 Problem 90 Problem 91 Problem 92 Problem 93 Problem 94 Problem 95 Problem 96 Problem 97 Problem 98 Problem 99 Problem 100 Problem 101 Problem 102 Problem 103 Problem 104 Problem 105 Problem 106 Problem 107 Problem 108 Problem 109 Problem 110 Problem 111 Problem 112 Problem 113 Problem 114 Problem 115 Problem 116

Problem 42 Easy Difficulty

A hydride of silicon prepared by the reaction of $\mathrm{Mg}_{2} \mathrm{Si}$ with acid exerted a pressure of 306 torr at $26^{\circ} \mathrm{C}$ in a bulb with a volume of 57.0 $\mathrm{mL}$ . If the mass of the hydride was 0.0861 $\mathrm{g}$ , what is its molecular mass? What is the molecular formula for the hydride?

Answer

92 $\mathrm{g} / \mathrm{mol}$

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Chemistry 101
Chemistry

Chapter 18

Representative Metals, Metalloids, and Nonmetals

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Nonmetals Chemistry

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Video Transcript

this question is an ideal gas law question and then a Moeller math calculation question. You are given the volume, temperature and pressure of the silicone hydride that was created with the pressure, temperature and volume of the silicone hydride. You can use the ideal gas law in order to calculate the moles of the silicone. Hydride will convert the pressure from tour to atmospheres, convert the mill leaders. Two leaders use our our value of 0.8 to 06 and then convert our Celsius temperature 26 degrees Celsius to Kelvin temperature by adding on to 73. Then this gives us 9.35 times 10 to the negative four moles of the silicone hydride to calculate Mueller Massa's you recall, Mueller, Mass is the mass of something divided by the moles of that something the mass was given to us at 0.861 g. We just calculated the moles. So the question of these two numbers gives us the molar mass. 92.1 g per mole with 92.1 g in one mole that allows for three silicones and then eight hydrogen, which gives us essentially the same Mueller Mass at 92.3

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Paul Flowers, Klaus Theopold, Richard Langley, William R. Robinson

Chemistry

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