Question

ii. atomic masses
copy the masses of the following common elements. use at least two decimal places.
h ______ amu
c ______ amu
s ______ amu
o ______ amu
ca ______ amu
n ______ amu
na ______ amu
cl ______ amu

Explanation:

Step1: Recall Atomic Masses

We use the standard atomic masses (in amu) from the periodic table, rounded to two decimal places.

• Hydrogen (H): The atomic mass of H is approximately 1.01 amu.
• Carbon (C): The atomic mass of C is approximately 12.01 amu.
• Sulfur (S): The atomic mass of S is approximately 32.07 amu.
• Oxygen (O): The atomic mass of O is approximately 16.00 amu.
• Calcium (Ca): The atomic mass of Ca is approximately 40.08 amu.
• Nitrogen (N): The atomic mass of N is approximately 14.01 amu.
• Sodium (Na): The atomic mass of Na is approximately 22.99 amu.
• Chlorine (Cl): The atomic mass of Cl is approximately 35.45 amu.

Answer:

Element	Atomic Mass (amu)
C	12.01
S	32.07
O	16.00
Ca	40.08
N	14.01
Na	22.99
Cl	35.45