Pure platinum is too soft to be used in jewelry because it scratches easily. To increase the hardness so that it can be used in jewelry, platinum is combined with other metals to form an alloy. To determine the amount of platinum in an alloy, a 8.846 g sample of an alloy containing only platinum and cobalt is reacted with excess nitric acid to form 1.62 g of cobalt(II) nitrate. Calculate the mass percent of platinum in the alloy.
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Chemistry, 22.06.2019 03:30, fbillinton
In this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced?
Answers: 1
Chemistry, 22.06.2019 11:50, hadwell34
Which of the following statements about hybrid orbitals is or are true? choose all that apply. choose all that apply. under sp2 hybridization, the large lobes point to the vertices of an equilateral triangle. after an atom undergoes sp hybridization there is one unhybridized p orbital on the atom. the angle between the large lobes of sp3 hybrids is 109.5∘
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Chemistry, 22.06.2019 18:10, ellemarshall13
Measurements that have similar values are: a. usually accurate b. sometimes accurate c. always accurate d. never accurate
Answers: 1
Pure platinum is too soft to be used in jewelry because it scratches easily. To increase the hardnes...
Mathematics, 12.02.2020 06:29
Mathematics, 12.02.2020 06:29