1. The atomic mass is equivalent to 1/12 of the mass of a neutral atom of which element?

a. gold
b. hydrogen
c. carbon
d. oxygen

2. for an element, how does Avogadro’s number connect the atomic in the macroscopic scales?
a. it describes the number of moles in 1 grams of an element.
b. it describes the number of grams in 1 mole of an element.
c. it describes the number of atoms in 1 mole of an element.
d. it describes the number of atoms in 1 gram of an element.

3. The atomic mass of an element platinum (Pt) is 195.08 amu. How many atoms of platinum are in 195.08 grams?
a. 1.175 x 10^26 atoms
b. 6.022 x 10^23 atoms
c. 3.087 x 10^21 atoms
d. 1.951 x 10^25 atoms

4. The atomic mass of an element niobium (Nb) is 92.906 amu. which measurement is correct?
a. 1 mole of Nb= 92.906 atoms
b. 1 mole of Nb= 92.906 grams
c. 1 gram of Nb= 92.906 moles
d. 1 gram of Nb= 92.906 atoms

5. The atomic mass of copper (CU) is 63.546 amu, the atomic mass of sulfur (S) is 32.065, and the atomic mass of oxygen (O) is 15.999 amu. which molar mass is correct for copper sulfate (CuSO4)?
a. 446.440 g/mol
b. 225.802 g/mol
c. 111.610 g/ mol
d. 159.607 g/mol

9 answers

1. The atomic mass unit is equivalent to 1/12 of the mass of a neutral atom of which element?
-carbon

2. For an element, how does Avogadro's number connect the atomic and macroscopic scales?
-It describes the number of atoms in 1 mole of an element.

3. The atomic mass of the element platinum (Pt) is 195.08 amu. How many atoms of platinum are in 195.08 grams?
-6.022×10236.022×1023 atoms

4. The atomic mass of the element niobium (Nb) is 92.906 amu. Which measurement is correct?
-1 mole of Nb = 92.906 grams

5. The atomic mass of copper (Cu) is 63.546 amu, the atomic mass of sulfur (S) is 32.065, and the atomic mass of -oxygen (O) is 15.999 amu. Which molar mass is correct for copper sulfate (CuSO4)?
159.607 g/mol

Thanks heyo ❄

thank you heyo!!! <3

Thank you so much, "Heyo" you're 100% correct! Thank you!

Thank you heyo!! <33

Heyo!! <3

1) Carbon
2) It describes the number of atoms in 1 mole of an element.
3) 6.022×1023 atoms
4) 1 mole of Nb = 92.906 grams
5) 159.607 g/mol

THANKS heyo AND Fever!

<33333!!!!