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5 105
How many grams of oxygen can be prepared by the decomposition of 12 g of mercury (II) oxide? ( Atomic mass: Hg = 200 g/mol, oxygen= 16 g/mol.)
5 105
A catalyst increases the reaction rates by changing the reaction mechanism.
5 105
The reactions in which oxidation and reduction do not occur and such types of reactions are known as ___________.
5 105
When 20g of sulphur dioxide reacts with oxygen, 23 g of sulphur trioxide is formed. What is the percentage yield?
5 105
How many liters of sulphur trioxide are formed when 4800 cm³ of sulphur dioxide is burned in air?
5 105
How many moles of CaO are needed to react with excess water to produce 370 g of calcium hydroxide?
5 105
Consider the following chemical equation:
PCl₅ + H₂O ------>H₃PO₄ + HCl.
Then what is the coefficient of HCl after balancing of chemical equation?
5 105
What is the magnetic field strength when a current of 6A flows in a wire 3m long and produces a force of 36N ?
5 105
If matrix A is a 3 × 3 matrix and its 1st row elements are identical with 3rd row elements. Then matrix A is:
5 105
Let A be a 3 × 3 triangular matrix and its diagonal elements are 1, 4, and 2. Then which one of the following is not true about its determinate?
5 105
Change into passive voice:
He helps me every day.
Write your answer under the comment!
5 105
Of 100 staff members of a school, 48 drink coffee, 25 drink both tea and coffee and everyone drinks either coffee or tea. How many stuff members drink tea?
