The formulas for the given compounds.
Answer to Problem 20R
The formulas for the compounds potassium iodide, phosphorus pentachloride, magnesium hydroxide, aluminum sulfate, dichlorine heltoxide and calcium nitrate trihydrate are KI,
Explanation of Solution
Given:
The compounds are potassium iodide, phosphorus pentachoride, magnesium hydroxide, aluminum sulfate, dichlorine heltoxide and calcium nitrate trihydrate.
Calculation:
The combination of two or more elements is called a compound.
In potassium iodide, the negative ion is iodine and the positive atom is potassium. The charge on the potassium is +1 and on iodide is -1.
Therefore, the formula for potassium iodide is KI.
In phosphorus pentachoride, the negative ion is chlorine and the positive atom is Phosphorous. The charge on Phosphorous is +5 and on chlorine is -1.
Therefore, the formula for phosphorus pentachoride is
In magnesium hydroxide, the negative ion is hydroxide and the positive atom is magnesium. The charge on magnesium is +2 and on hydroxide is -2.
Therefore, the formula is
In ammonium sulfate, the negative ion is sulfate and the positive atom is ammonium. The charge on ammonium is -2 and on sulfate is +2.
Therefore, the formula is
In dichlorine heptoxide, the negative ion is heptoxide and the positive atom is chlorine. The charge on heptoxide is -7 and on chorine is +7.
Therefore, the formula is
In calcium nitrate trihydrate, the negative ion is nitrate and the positive atom is calcium. The charge on nitrate is -2 and on calcium is +2.
Therefore, the formula is
Conclusion:
Hence, the formulas for the compounds potassium iodide, phosphorus pentachoride, magnesium hydroxide, aluminum sulfate, dichlorine heltoxide and calcium nitrate trihydrate are KI,
Chapter 18 Solutions
Glencoe Physical Science 2012 Student Edition (Glencoe Science) (McGraw-Hill Education)
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