Draw the resonance structures for the thiocynate ion then calculate the formal charges for the atoms and determine which one is more favorable structure with the explanation.
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Complete the following reactions using word and balanced equations including states. dilute phosphoric acid is added with a calcium hydroxide solution.

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17

Sum of brother and sisters age is 26. four times the brothers age is subtracted from three times the sisters age, the difference is 8. what are the ages of the brother and sister?