Chemistry, 01.10.2019 22:00 zacksoccer6937
Awhite powder is known to be a mixture of magnesium oxide and aluminum oxide. 100cm3 of 2moldm-3 naoh(aq) is just sufficient to cause the aluminum oxide in x grams of the mixture to dissolve. the reaction occurring is al2o3 + 2oh- + 3h2o > 2al(oh)4- 800cm3 of 2 moldm-3 hcl (aq) is just sufficient to cause all of the oxide in x grams of the mixture to dissolve. the reactions occurring are al2o3 + 6h > 2al3+ + 3h2o and mg2+ +h2o. how many moles of each oxide are present in x grams of the mixture ? a. aluminium oxide 0.05, magnesium oxide 0.25 b. aluminium oxide 0.05, magnesium oxide 0.50 c. aluminium oxide 0.10, magnesium oxide 0.25 d. aluminium oxide 0.10, magnesium oxide 0.50
Answers: 2
Chemistry, 22.06.2019 06:00
How many atoms of mg are present in 97.22 grams of mg? 6.022 × 1023 2.408 × 1024 4.818 × 1024 5.855 × 1025
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Chemistry, 23.06.2019 01:20
Use the de broglie's wave equation to find the wavelength of an electron moving at 7.3 × 106 m/s. show your work. note: h = plank's constant (6.62607 x 10-34 j s)
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Chemistry, 23.06.2019 02:00
Which statement is true about the model of the electromagnetic spectrum a: it change the frequencies of light. b: it compare wavelengths of light. c: the color of light waves can be changed using the model. d: the intensities of light waves can be decreased using the model.
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Chemistry, 23.06.2019 05:40
Why is any chemical reaction always balanced? give reasons and explain the easiest way to solve the balancing problems in chemical equations with stoichiometric coefficients upto 20 as hit and trial doesn't always work. give full reasoning
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Awhite powder is known to be a mixture of magnesium oxide and aluminum oxide. 100cm3 of 2moldm-3 nao...
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