evaluate the expression 12( + 2)

Evaluate the expression 12 2 - 3 2 - 4 2 . => 125 or 121 or 119 or 123..

Question: Speed of 90 km/h when expressed in m/s is . 1. 2.5 2. 25 3. 250 4. 90000 Answer: 2..

What is the value of the expression 14 - 4 × 6 + 12? => 2 or -4 or 6 or 8..

Find the value of the expression 3(12 - 4) 2 . => 192 or 64 or -192 or None of the above..

What is the base of exponential expression? (4 - 2 - 1.2) 3 => 2.04 or 0.8 or 2 or 0.2..

Express verbally the probability of getting a product of 12 when two dice are rolled. => 3 out of 36 or 2 out of 36 or 5 out of 36 or 4 out of 36..

Fill the blank using an appropriate symbol for the expression: 2 4 × 2 5 __ 2 12 . =>> or ≥ or < or =..

The half-life of 92 U 238 against alpha decay is 4.5 x 109 years. How many disintegrations per second occur in 1 g of 92 U 238 ? Suggested solution: Again, since one k mole of any isotope contains Avogadro's number of atoms, there fore 1 g of 92 U 238 contains Half life T = 4..

The amounts of reactants and products in a chemical reaction are related by stoichiometry. Therefore, the concentration of any reactant or product can be used to express the rate of a reaction. Take for e.g., in the reaction A + B C for every molecule of A consumed, a molecule of B is als..

Rate Law Expression - Experimentally, it is found that the rate of a reaction is proportional to the concentrations of the reactants raised to some power, provided that other factors, which also affect the rate of the reaction are kept constant. For e.g., for the hypothetical reaction, th..