📚 Fri Dec 11 CFU Counting Atoms, the Mole, and Molar Mass

How many Nitrogen atoms are in ammonium oxide?

• 1

• 2

• 8

• 16

Tags

NGSS.MS-PS1-1

How many atoms are present if there is no subscript following the element symbol?

• 0

• 2

• only 1

• 1 million

Tags

NGSS.MS-PS1-1

How many atoms of Oxygen are in iron (III) nitrite?

• 6

• 3

• 9

• 1

Tags

NGSS.MS-PS1-1

The ______ are numbers found on the lower right-hand side of an element symbol.

• Coefficient

• Exponent

• Multiplier

• Subscript

Coefficients in chemical formulas...

• Multiply just the first atom

• Add to the subscripts at the end of the molecule

• Multiply elements without subscripts

• Multiply EVERYTHING!

Tags

NGSS.MS-PS1-1

4CF₂Cl₂

• C = 4, F = 4, Cl = 2

• C = 1, F = 8, Cl = 8

• C = 4, F = 8, Cl = 8

• C = 1, F = 4, Cl = 8

Tags

NGSS.MS-PS1-1

How many different elements are present in 3 molecules of ammonium acetate

• 15

• 36

• 5

• 4

Tags

NGSS.MS-PS1-1

Number of C's in 2 molecules of sodium carbonate

• 1

• 2

• 3

• 5

Tags

NGSS.MS-PS1-1

How many Oxygen atoms are in gallium sulfite?

• 4

• 9

• 7

• 24

Tags

NGSS.MS-PS1-1

Calculate the total number of atoms in calcium hydroxide

• 1

• 2

• 5

• 4

Tags

NGSS.MS-PS1-1