SciNote and SigFigs
A method for abbreviating numbers in science
What is scientific notation?
The number of atoms in 1.00 mol of C.
What is 6.02x1023 atoms?
The number of formula units in 1.00 mol of NaCl.
What is 6.02x1023 formula units?
The scientist for whom the mole number (NA) is named.
Who is Amadeo Avogadro (Avocado's Number)?
The smallest particle that has the properties of a covalent compound.
What is a molecule?
Means "times 10 to an exponent" in the calculator
What is E?
The number of atoms in 2.00 mol of Fe.
What is 1.20x1024 atoms of Fe?
The number of formula units in 3.00 mol of CaCl2.
What is 1.81x1024 formula units?
The number of moles in 6.02x1023 particles of any substance.
What is one mole?
The number of molecules in 10.0 mol of diatomic oxygen (O2).
What is 6.02x1024 molecules?
The number of rounded digits in the calculation when 1.23 is multiplied by 2.34.
What is 3?
The number of atoms in 2.50 mol of Ar.
What is 1.51x1024 atoms?
The number of formula units in 6.54 mol of Na3PO4.
What is 3.94x1024 formula units?
The number of moles in 2.41x1024 atoms of Kr.
What is 4.00 moles?
The number of molecules in 7.5 mol of carbon dioxide.
What is 4.5x1024 molecules?
Zeros that change the place value of digits in a measurement.
What are placeholders?
The number of atoms in 0.643 mol of Cu.
What is 3.87x1023 atoms?
The number of formula units in 0.0691 mol of FeS.
What is 4.16x1022 formula units?
The number of moles in 3.62x1022 molecules of water.
What is 0.0541 mol of water?
The number of molecules in 0.813 mol of methane (CH4).
What is 4.89x1023 molecules?
Zeros that do not affect the place value of other digits in a measurement.
What are significant digits (measured zeros)?
The number of Cl atoms in 1.65 mol of Cl2.
What is 1.99x1024 atoms (6.02x1023 x 1.65 x 2)?
The number of formula units in 15.6g of NaCl.
What is 1.61x1023 formula units?
The number of moles of oxygen atoms (O) in 3.76x1023 molecules of glucose (C6H12O6).
What is 3.75 moles of oxygen?
The number of atoms of carbon in 2.83 mol of ethane (C2H5OH).
What is 3.41x1024 atoms?