Answer:
9
Explanation:
atomic mass = number of protons + number of neutrons = 4+5 = 9 amu
The answer would be: a "Chemical change."
One of the indicators of a chemical change is a change in color. This is seen in rusting metal. When exposed over time to air, metal changes color. The substance composition has changed through the breaking of bonds and formation of new bonds.
Explanation:
b. What useful functions do oxidation numbers serve?
It is used to show oxidation and reduction (loss and gain of electrons)
b. How many molecules are in 1 mole of molecules?
1 mole = 6.022 * 10^23 molecules
c. What is the name given to the number of molecules in 1 mole?
Avogadro's Number of molecules
21. a. What is the molar mass of an element?
This is the mass of an element divided by the number of moles.
Molar mass = Mass / Number of moles
b. Write the molar mass rounded to two decimal places of carbon, neon, iron and uranium.
amu = Atomic Mass Unit
Carbon = 12.01 amu
Neon = 20.18 amu
Iron = 55.85 amu
Uranium = 238.03 amu
Answer:
Explanation:
Geologic erosion influences soil formation and distribution. Accelerated erosion results from the removal of natural vegetation by human activities such as farming, ranching, forestry, and construction. The production of agricultural and forest products can be affected by excessive erosion
A theory is only accepted if it can't be disproven. A theory uses science, which is experimental data transformed into reality. A theory is more than an idea. It uses proven laws of physics and accepted standards.