Question
How many oxygen atoms are present in a molecule of
Aluminum sulfate, Al₂(SO4₄)₃ ?Solution
Aluminum sulfate, Al₂(SO4₄)₃, contains three sulfate groups, each comprising four oxygen atoms, totaling twelve oxygen atoms. This compound is frequently used in water purification and paper manufacturing.
A cube has a volume of 216 cm³. Determine the area of a single face of the cube?
Let A be a 3×3 matrix such that AT =−A and all diagonal entries are zero.
Which of the following is always true ?
50 men takes 10 less days to do a work than 30 men takes time for same work. Find in how many days 15 men can complete the 2/5th of the work?
If log₃(2x + 3) = 2 + log₃(x – 1), find x.
In what time will Rs. 25000 amount to Rs. 26530.20 @ 4% compound interest payable half-yearly?
A shopkeeper mixes two types of rice, costing $30 per kg and $50 per kg, in the ratio 3:2. He sells the mixture at $45 per kg. What is his percentage pr...
"M' sold a watch to 'N' making a profit of 20%. 'N' then sold it to 'X' at a 10% loss. If 'M' had directly sold the watch to 'X' ...
- The average weight of 6 students in a group is 45 kg. If one student is replaced by person 'B', the average weight of the group increases by 5%. Find the d...
In a triangle ABC, AB = AC and the altitude from A to BC is 8 cm. If BC = 12 cm, find the area of the triangle.
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