Scientific Instruments
What is used to measure Length?
A Ruler
What system of measurement do we use?
The Metric System
Is every Non-Zero a Significant figure?
Yes
What is a Mole equal to?
6.02 x 10^23
How do you get from Moles to Mass?
The Molar Mass
The liquids are generally measured in what?
Milliliters
Which Unit is larger?- Deci or Deka
Deka
Are trailing zeros following non zeros always Sig Figs?
No, only if there is a decimal
The Molar Mass in grams per mole is equal to what?
The mass of that expressed in atomic mass units
How do you get from Moles to Particles?
6.02 x 10^23
If the Actual mass of an object is 7 grams what is the precision of the following measurements?- 6.98, 7.01, 6.99?
It is Accurate and Precise.
Which measurements are used for the Base?
g, L, m
How Many Sig Figs?- 750
2
What is the Molar Mass of HCl?
Mass of .760 mol of MgBr2?
(.760)x(184.113)=139.93g
If the initial volume of a cylinder is 150 mL and an irregular object is placed into the cylinder which makes the volume of the cylinder rise to 180 mL, what is the Volume of the object?
30 mL
What is 0.06 Kg to dg?
600 dg
How many Sig Figs?-0.0101
3
What is the Molar Mass of NaCl2?
22.990+(2)35.453=93.896g/mol
Number of atoms in .78 mols of Mercury(Hg)?
(.78)x(6.02x10^23)= 4.695 x 10^23 atoms/Hg
What is the most accurate type of cylinder for measurement?
Graduated Cylinder
What is 8000 mL to ML?
8.0 x 10^-7
How Many Sig Figs?- 1090.0010
8
What is the Molar mass of C6H1206?
72.064+12.084+95.996=180.145g/mol
How many moles of Zinc Sulfate contain 5.40x10^24?
8.97 mol Zinc Sulfate