<p>Name Period </p><p>Formulas of Compounds Polyatomics How many of each element are present in the following compounds and what is the molar mass of each compound? Molar Mass KOH K = 1 O = 1 H = 1 56.11 g Ca(OH)2 Ca = 1 O = 2 H = 2 74.10 g Be(ClO4)2 MgSO4 H3PO4 (NH4)3P Sr(CN)2 FeCO3 RbMnO4 Fe2(CO4)3</p><p>The positive ion is on the left and the negative ion on the right. Use subscripts to make the compound neutral. Name the compound.</p><p>Positive Ion (Cation) Formula Name Negative Ion (Anion) + 3- Potassium K K3PO4 Potassium phosphate PO4 phosphate + - Lithium Li NO2 nitrite 2+ 2- Magnesium Mg SO4 sulfate Hydrogen H+ CN- cyanide + - Silver Ag HCO3 bicarbonate Calcium Ca2+ O2- oxide Strontium Sr2+ OH- hydroxide 2+ 2- Beryllium Be CO3 carbonate + 2- Sodium Na SO3 sulfite Gallium Ga3+ ClO- hypochlorite + - Potassium K MnO4 permanganate 3+ - Indium In NO3 nitrate 2+ - Barium Ba ClO3 chlorate Aluminum Al3+ N3- nitride Zinc Zn2+ Br- bromide + - Ammonium NH4 Cl chloride</p><p>Write the formula for the following compounds. This set has only binary compounds.</p><p>Name Cation Anion Formula Molar Mass Potassium chloride K+ Cl- KCl 74.55 g Calcium sulfide Aluminum bromide Lithium sulfide Barium iodide Gallium selenide Name Period </p><p>Write the formula for the following compounds.</p><p>Name Cation Anion Formula Molar Mass + 3- Potassium phosphate K PO4 K3PO4 212.27 g Ammonium chloride Strontium nitrate Gallium sulfite Sodium cyanide Beryllium chlorate Lithium carbonate</p><p>Fill in the following formulas.</p><p>Hydroxide Phosphate Carbonate Sulfate Nitrite Sulfite</p><p>Ammonium NH4OH (NH4)3PO4</p><p>Aluminum Al(OH)3 Strontium Gallium Calcium Hydrogen Vanadium(III) Magnesium</p><p>Fill in the following formulas. Place an X where no formula is possible. (Positive ion combined with a positive or a negative ion combined with a negative ion)</p><p>Hydroxide Gallium Ammonium Phosphate Magnesium Nitrite Hydrogen Nitrate Oxide Lithium Cyanide Barium Bicarbonate Sulfate Aluminum Beryllium</p>