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Isotopes are atoms of the same element (having the same number of protons) that differ in the number of neutrons they possess. This variance in neutron number can affect the atomic mass and stability but does not alter the chemical properties of the element.
A chemist combines three solutions with active ingredient concentrations of 10%, 20%, and 30% in the ratio 2:3:5. If the total volume of the mixture is ...
Two vessels, A and B, contain mixtures of milk and water in the ratios 11:9 and 13:37, respectively. The quantities of mixtures in A and B are in the ra...
Coins are distributed among Anoop, Bishnu, Chinky, and Danny such that the difference between Chinky’s share and Danny’s share is equal to the diffe...
The ratio of the ages of A and B is 3:5. If the difference between their ages is 10 years, what is the sum of their ages?
P gave out 'a' cookies to Q, R, S, and T. The cookies received by Q and S are in a 4:7 ratio, and those received by R and T are in a 2:3 ratio. If R rec...
If the surface areas of two spheres are in the ratio of 4 : 25, then find the ratio of their volumes.
120 cookies were distributed among 20 students in a class such that each boy gets 8 cookies and each girl gets 4 cookies. Find the number of boys in the...
