Give five examples of exothermic reactions in everyday life

Which is a way that paleontologists have contributed to humans' understanding of the history of life? They found evidence that climate has not changed significantly. They grouped organisms by the period in which they existed.

Now consider the decomposition of dinitrogen monoxide. N2O (g) → N2 (g) + ½ O2 (g) rate = k[N2O]2 Starting with an initial concentration of 1.0 M, what is the half-life of the reaction?

How to find out if a salt is acidic or basic or neutral?

In the chemical laboratory, what does a mortar and pestle function as? ... a. to increase surface area of a solute ... b. to decrease surface area of a solute ... c. to increase temperature of a solute ... d. to decrease temperature of a solute

When Mendeleev started his work on organizing the elements, about how many had been discovered? about 10 well over 100 about 60 the same as today

What mass of H2SO4 is contained in 60.00 mL of a 5.85 M solution of sulfuric acid

One isotope has 6 protons and 8 neutrons which reference names this isotope

When an atom that has no charge loses two electrons, it becomes a: A: positive ion. B: negative ion. C: positive isotope. D: negative isotope.

A 155.0 9 piece of copper at 182 °C Is dropped into 2500 g of water at 23.9 °C. (The specific heat of copper is 0.385 1/9°C.) Calculate the final temperature of the mixture. (Assume no heat loss to the surroundings.)

Which state of matter is characterized by having an indefinite shape, but a definite volume? Gas Liquid Solid None of the above