Extra credit homeworkCh2b

Extra credit homeworkCh2b - Chapter 2(Part B Extra-Credit...

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Chapter 2 (Part B) Extra-Credit e-homework! ANSWERS ARE GIVEN IN BOLD! 1. Write the name of each of the following polyatomic ions: (a) HPO 4 2- 1hydrogen phosphate (b) H 3 O + 2hydronium (c) NH 4 + 3ammonium 2. Write the formula and charge for the following polyatomic ions: (a) sulfate SO42- (b) hydronium H3O + (c) hydroxide OH- 3. Identify the cations and anions present in the following compounds. What is the ratio of cations to anions for each compound and why? (Use the lowest possible coefficients. Enter only whole numbers.) (a) Li 2 CO 3 cation anion
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chem Pad Help Li+ chem Pad Help CO32- ratio of cations to anions = 32 : 41 (b) (NH 4 ) 2 HPO 4 cation anion
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chem Pad Help NH4+ chem Pad Help HPO42- ratio of cations to anions = 72 : 81 (c) KCH 3 CO 2 cation anion
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chem Pad Help K+ chem Pad Help CH3COO- ratio of cations to anions = 111 : 121 4. Calcium phosphate is one of the compounds present in kidney stones. What is the formula unit for calcium phosphate? Ca3(PO4)2 5. What is the mass of one mole of fluorine atoms? (Give your answer to two decimal places.) 119.00 g 6.
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Which is lighter: a mole of silver or a mole of rhenium ? 1
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This note was uploaded on 09/16/2011 for the course CHM 1033 taught by Professor Staff during the Spring '08 term at FIU.

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Extra credit homeworkCh2b - Chapter 2(Part B Extra-Credit...

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