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A “d” subshell can hold a maximum of how many electrons?

Find the molar mass of ethanol, (NH4)2SO4.

What is the percent composition by mass of nitrogen in ammonium carbonate (NH4)2CO3? 

Find the output of the following code. public class Test{          public static void main(String []args){          int a = 100;         ++a;        System.out.println(++a);    }  }    

Ammonia can be synthesized by this reaction: 3H2(g) + N2 (g) →{“version”:”1.1″,”math”:”→”} 2NH3 (g). What the theoretical yield of ammonia in grams can be synthesized from 25.3 g of N2 and 8.42 g of H2? 

 What is the charge on a magnesium atom that contains 10e-?

 All of the following compounds are soluble in water EXCEPT?

 Which of the following compounds is SOLUBLE?

What is the output of following program? public class Test{            static int start = 2;     final int end;     public Test(int x) {         end = x;     }     public void fly(int distance) {         System.out.print(end-start+” “);         System.out.println(distance);     }     public static void main(String []args){           Test test = new Test(10);         test.fly(7);     }   }  

 Fructose, a sugar found in fruit, has a molar mass of 180.2 g/mol and its empirical formula is CH2O. what is the chemical formula of fructose?