The nucleus of an atom of Cobalt-58 contains:

1. 27 protons and 31 neutrons

2. 27 protons and 32 neutrons

3. 59 protons and 60 neutrons

4.60 protons and 60 neutrons

How is the earth like a gigantic recycling center

Discussion Questions 1. Given the equilibrium equation for a general reaction, A + B  C + D, explain what happens to the reactants and products from time 0 until the time at which the reaction reaches equilibrium. 2.

An object exerts force of 500 n and sits on an area of 4.5m X 1.5m. Calculate the amount of pressure exerted by the object in torr.

Table salt is formed when an electron is transferred from a sodium atom to a

Which chemical in the atmosphere of Titan (a moon of Saturn) appears to play the same role that water plays on Earth in producing "rain" and forming lakes and streams, at the temperature encountered on the moon?

Complete the following statement by checking all that apply Creativity allows scientists to develop multiple approaches to solving problems. adapt to changes in scientific knowledge. look at old problems in new ways.

The atomic weight of hydrogen is 1.00794. a. True b. False

Describe What kind of ions do metals form? What kind of ions do nonmetals form?

A car is driven through streets treated with salt and then parked in a warm garage. a) How will the rate of rusting compare with a car that has not been driven in the streets treated with salt but left parked outside?

Amalgam is an alloy that contains mercury and other metals. Which of these atoms would most likely form metallic bonds with mercury? Check all that apply. bromine copper hydrogen iodine silver tin