Sig Figs and Measurement
The number of significant figures in 0.0450
3
The SI base unit for length
Meter
Density equals mass divided by this
Volume
The positively charged particle found in the nucleus
Proton
The number of particles in one mole
6.022 × 10²³
This term describes how close repeated measurements are to one another
Precision
2,500 grams expressed in kilograms
2.5 kg
The density of a 50.0 g sample that takes up 25.0 cm³
2.00 g/cm³
The positively charged particle found in the nucleus
The Atomic Number
The molar mass of water
18.02 g/mol
0.00372 written in scientific notation
3.72 x 10^-3
The metric prefix that means one-thousandth
Milli-
The method used to find the volume of an irregular solid
Water displacement
Isotopes of the same element differ in the number of these particles
Neutrons
The number of moles in 88.0 g of CO₂ (molar mass 44.01 g/mol)
2.00 mol
Adding 8.1 g and 2.46 g gives this total, correctly rounded
10.6 g
3.50 ft in meters (1 ft = 0.3048 m)
1.07m
The mass of 40.0 cm³ of a liquid with a density of 0.800 g/cm³
32 g
The number of neutrons in carbon-14
8
The number of molecules in 2.00 mol of any molecular substance
1.20 × 10²⁴
(3.0 × 10⁴)(2.5 × 10⁻²) in the correct number of sig figs
7.5 × 10²?
3.50 ft in meters (1 ft = 0.3048 m)
What is 4.20 × 10⁴ mg (42,000 mg)?
A 3.00 cm cube has a mass of 54.0 g. Give its density and say whether it floats in water
2.00 g/cm³, and it sinks
The average atomic mass of an element that is 75.0% mass 35.0 amu and 25.0% mass 37.0 amu
35.5 amu
The mass of 3.01 × 10²³ molecules of O₂ (molar mass 32.00 g/mol)
16 g