(Scientifc Notation/Sig Figs)
how many sig figs is in the number 102.34
5
How many meters are in 252 mm?
0.252 M
what is the charge of hydrogen
+1
What is the density of a 5 g piece of copper that has a volume of .0124 g/cm3
403.23 or
4.03x 102
what is the fundamental SI unit for length
meter
When adding or subtracting numbers what is the sig fig rule.
least number of decimal places
How many cg are in 0.497 g?
49.7 cg
What are the diatomic elements and how are they written.
Nitrogen, oxygen, fluorine, clorine, bromine, idoine
If the mass of a lead ball is 23.5 g and the volume is 3.5 mL, what is the density of the lead ball?
6.7g/mL
what elements are the metaloids
Boron, silicone, germanium, arsenic, antimony, and tellurium.
9.87 x 10-3
How many kL are in 8383 L?
8.383 kL
what group is the alkali earth metals
group 2
Given: Dphosphorus = 1.82 g/cm3, 3.49 g
Wanted: volume of phosphorus in cm3?
1.92 cm3
two species that have the same atomic number but a different number of neutrons is called a(n)____ whereas two species with the same atomic number but a different number of of electrons is called a(n)____
Isotope; Ion
What is 9,336,500,000 in scientific notation?
9.3365 × 109
How many cc's are in 979 mL?
979
what group is the halogens
group 17
If the density of propanol is 0.828 g/mL and a sample has a mass of 14.5 g what is the volume?
17.5 ml
What are the 2 ways to find volume
Vf-Vi= Vobject
LxWxH
what is the number 44502 in scientifc notation?
A: 445.02 x 10-4
B: 44.502 x104
C: 4.4502 x 10-4
D: 4.4502 x 104
D: 4.4502 x 104
how many microliters are there in 2.86 x 10-5 kL
2.86 x104 microliters
How many neutrons are present if the atomic mass is 23
12 neutrons
11 protons
11 electrons
The density of ethanol is 0.802 g/mL. How much in grams does 9.85 x 10-2 L mass?
79.0 g
1 cm3 = ?
1 ml