The atomic symbol represents
A) the number of electrons in an atom of an element.
B) the name of the element.
C) the history of the element.
D) All of the above.
E) Only two of the above.
Question 2
When we breathe we inhale oxygen, Image, and exhale carbon dioxide, Image, plus water vapor, ImageO. Which likely has more mass, the air that we inhale or the same volume of air we exhale? Does breathing cause you to lose or gain weight?
A) The air we inhale has more mass; Breathing causes you to lose weight.
B) The air we exhale has more mass; Breathing causes you to lose weight.
C) The air we inhale has more mass; Breathing causes you to gain weight.
D) The air we exhale has more mass; Breathing causes you to gain weight.
An illustration of the helium atom, depicting the nucleus (pink) and the electron cloud distribution
Chevrolet symbol
This advertisement from about 1885 represents an early stage of capitalism when individuals were ...
A thimble of water contains 4.0 x 1021 molecules. The number of moles of H2O is:
Determination of the Number of Polygenes (n)
What is the isotopic atomic mass of an isotope if 9.7023 1022 atoms weighs 4.0256 g?