The total mass of the protons in an atom of gold-198 is approximately

(1) 79 atomic mass units

(2) 119 atomic mass units

(3) 198 atomic mass units

(4) 277 atomic mass units

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If a population grows larger than the carrying capacity of the environment, which of these is most likely to happen? A. The death rate may rise. B. The birthrate may rise. C. The death rate must fall. D. The birthrate must fall.

A sample of hydrated calcium sulfate has a mass of 20.88 g. After it is heated, it has a mass of 16.51 g. What is the percentage by mass of water in the hydrate

Write the structural formula for m-chlorophenyl ethyl ether.

All of the following can be used to define an acid except a hydrogen ion donor in a reaction a substance that increases the hydronium ion concentration of a solution an electron-pair acceptor in a reaction a substance that increases the hydroxide

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What is the oxidation number of iodine in KIO4? (1) + 1 (3) + 7 (2) - 1 (4) - 7

Which uses of iron are due to its chemical properties? Select two options. producing colored sparks in fireworks changing from liquid to gas at 2,862°C rusting in the presence of water and oxygen changing from solid to liquid if heated to 1,538°C

What type of sedimentary rock is formed from mechanical weathering debris

What type of energy travels in the form of electromagnetic waves?