Questions from General Chemistry

Q: When iron rusts in moist air, the product is typically a

When iron rusts in moist air, the product is typically a mixture of two iron–oxygen compounds. In one compound, there is an equal number of iron and oxygen atoms. In the other compound, there are thre...

Q: How many protons and neutrons are contained in the nucleus of each

How many protons and neutrons are contained in the nucleus of each of the following atoms? For an atom of the element, how many electrons are present?

Q: Though the common isotope of aluminum has a mass number of 27

Though the common isotope of aluminum has a mass number of 27, isotopes of aluminum have been isolated (or prepared in nuclear reactors) with mass numbers of 24, 25, 26, 28, 29, and 30. How many neutr...

Q: How did Robert Boyle define an element?

How did Robert Boyle define an element?

Q: How many electrons are present in each of the following ions?

How many electrons are present in each of the following ions? a. Se2- b. Br- c. Cr3+ d. Rb+ e. Bi3+ f. Cu2+

Q: Which English unit of length or distance is most comparable in scale

Which English unit of length or distance is most comparable in scale to each of the following metric system units for making measurements? a. a centimeter b. a meter c. a kilometer

Q: Give the chemical symbol for each of the following elements.

Give the chemical symbol for each of the following elements. a. barium b. potassium c. cesium d. lead e. platinum f. gold

Q: Which of the following series of elements is not matched with the

Which of the following series of elements is not matched with the correct description? a. F, Cl, Br—halogens b. He, Ne, Ar—noble gases c. Mg, Ca, Sr—alkaline earth metals d. Fe, Co, Ni—transition...

Q: Give the chemical symbol for each of the following elements.

Give the chemical symbol for each of the following elements. a. silver b. aluminum c. cadmium d. antimony e. tin f. arsenic

Q: For each of the following chemical symbols, give the name of

For each of the following chemical symbols, give the name of the corresponding element. a. Te b. Pd c. Zn d. Si e. Cs f. Bi g. F h. Ti