Questions asked by alaa

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• 41) A compound that is composed of carbon, hydrogen, and oxygen contains 70.6% C, 5.9% H, and 23.5% O by mass. The molecular weight of the compound is 136 amu. What is the molecular formula? A) B) C) D) E)
  
• The concentration of urea in a solution prepared by dissolving 16 g of urea in 39 g of is __________% by mass. The molar mass of urea is 60.0 g/mol??
  
• Write an inequality to describe the situation. Do not solve. carols paid less than $850 including $45 for shipping and 4% sales tax when he bought his new computer. Let represent the price of the computer?
  
• What is the equation in standard forms using only integers? y=1/6x+10