2016
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Brilliant - Build quantitative skills in math, science, and computer science with hands-on, interactive lessons.
Equivalent Mass = Volume of Hydrogen Liberated (STP)Mass of the Metal×11200. 3 3 grams of metal reacts with \ce {dil_.HCl} dilX.HCl and liberates 2800\text { cm}^3 2800 cm3 of hydrogen gas at STP. Calculate the equivalent mass of the metal. Plugging in the given values in the previous equation, we get.
When dealing with positive integers, exponents can be thought of as a shorthand notation for "repeated multiplication" of a number by itself several times. For example, the shorthand for multiplying 5 copies of the number 2 is. 2 \times 2 \times 2 \times 2 \times 2 = 2 ^ 5. 2×2×2 ×2×2 = 25. In words, we say that " 2^ 5 25 is 2 2 to the ...
Rule of Sum. The rule of sum is a basic counting approach in combinatorics. A basic statement of the rule is that if there are n n choices for one action and m m choices for another action, and the two actions cannot be done at the same time, then there are n+m n+m ways to choose one of these actions.
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Set is a game played with cards that each contain four attributes, where each attribute takes on one of three possible values. The goal of the game is to find sets (hence the game's name) of three cards, such that for each of the four attributes, either all three cards have different values or all three cards have the same value. Each card contains four attributes, each of which take on three values: Number: …
