Sciency Definitions
This prefix should be used to measure the size of an atom.
What are Nanometers?
A scientist obtained 0.0008367070 on a calculator. If the number actually had 5 significant figures how would it be written
What is .00083671
Which of these is NOT an element: Pt, Y, No U, Nm?
What is Nm?
This is the average weight of an element and all of its Isotopes.
What is AMU?
How many atoms are in 4.3g of solid Sulfur?
8.1 x 1022 atoms
How many protons neutrons and electrons are in the following:
Al3+
Protons:13
Neutrons:10
electrons :10
What is the name of
wavelengths shorter than visible light, ranging from 10 to 400 nanometers
What are Ultraviolet Waves?
Convert 851 miles to km (1m = 1.094 yds, 1 mile= 1760
1370km
Which choice has more electrons?
Au4+, Re, Os-1, Ta-3
Os-1
I have a DEFINITE volume and a relatively HIGH density. What state(s) am I?
Solid and Liquid
Find the frequency of a photon with a wavelength of 4,443.1 nm. Provide your answer in the units of Terahertz (1 THz = 1012 Hz). For the purposes of this problem, take the speed of light to be equal to 3.00 x 108 m/s.
67.5 THz
With 1g, you would have more mols of which: Cl, Ni2, C10, O2?
O2
A photon with a wavelength of 10 cm can be classified as:
(Hint: Electromagnetic)
What are microwaves?
With 9.6 grams of glucose C6H12O6 and 3.5 grams of NaCl Salt, which has more mols?
(Hint, these are compounds when finding their molar weight)
Salt
0.0599 > 0.0533
Write the isotope for the following imaginary neutral atoms:
a. Uf (29 protons, 28 neutrons, 29 electrons)
b. Mj (50 protons, 49 neutrons, 50 electrons)
5729Uf , 9950Mj