What kind of materials and with what weight will appear if we add 30 gram of sodium hydroxide to the 49 gram solution consists of sulfuric acid??? Pls explain your answer

The wave shown on the electromagnetic spectrum disturb the medium it passes through a)different frequency. b)the same frequency .

In france, grapes are 1.95 euros per kilogram. what is the cost of grapes, in dollars per pound, if the exchange rate is 1.14 dollars/euro? (2.6)

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.