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In analytical process, the efficiency at each step is 90%. A chemist is analyzing a sample
for Nickel using DMG. He follows these steps: dissolution, precipitation, filtration, drying
and weighing. If he starts with 1000 ppm of Nickel sample. Write down the steps and yield
at end of reaction. (M.W. (Ni = 58.7g; DMG = 116g, d= 1.37g/cc)
State the periodic law of an element
Compound is are primary alcohols
- A 2.15 L volume of KOH of an unknown concentration is mixed with 2050 mL of 0.445 M NaOH. The resulting solution is 0.985 M. Assuming the volumes are additive, find the molarity of the first KOH solution.
- A student prepares a 600.0 mL of 500.0 ppm of glucose solution. What volume of this solution (in millilitres) contains 0.115 g of glucose?
A patient weights 146 lbs and is to recieve a dosage of 45.0 mg per kg of body weight. the drug is supplied as solution that contains 25.0 mg of drug per mL of solution. what volume of drug should the pateint recieve?
If this reaction produced 23.0 g KCl,
23.0 g KCl, how many grams of
O2 were produced?
When heated, KClO3 decomposes into KCl and O2.
2KClO3⟶2KCl+3O2
If this reaction produced 23.0 g KCl, how many grams of O2 were produced?
