Chemical Equations
How many moles are of NaCl are in 0.30 mg?
5.13 10-6 moles
What is the name for PO43-
Phosphate
The amount of heat required to raise the temp of 1 g of a substance by 1°C.
What is Specific Heat?
What type of electromagnetic radiation has the highest frequency?
Gamma rays
If a subshell contains two electrons, then it must be an s subshell— True or False
False. Any orbital in any subshell can contain up to two electrons. The maximum that an s subshell can hold is two.
What is the formula for Molarity?
M = moles of solute/ liters of solute
Balance the equation: _ H2 + _ O2 -->_ H2O
2H2 + O2 --> 2H2O
What law is used for the following: A 3.50 L sample of hydrogen gas has a pressure of 0.750 atm. What is its volume if its pressure is increased to 1.50 atm at constant temperature?
Boyle's Law: P1V1 = P2V2
What is the equation that relates the speed of light (c), wavelength (λ), and frequency (ν)?
c = λν.
What is the electron configuration of sodium (Na)?
1s2 2s2 2p6 3s1
What is the mass of 1 molecule of NH3 in amu?
17.01
Balance the equation:
_Al+ _O2 --> _Al2O3
4Al+3O2 -->2Al2O3
What law is used to solve the following: A sample containing 22.0 g of gaseous carbon dioxide occupies a volume of 15.3 L. What will the new volume be if an additional 15.0 g CO2(g) are added, with no change in temperature or pressure?
Avogadro's Law: V1/n1= V2/n2
If the frequency of a light wave is 5 × 10¹⁴ Hz, what is its wavelength? (Speed of light = 3 × 10⁸ m/s)
6 × 10⁻⁷ m (600 nm).
[Ar]4s23d5
Mn
What is the molarity of a solution prepared by dissolving 45.00 grams of KI into a total volume of 500.0 mL.
0.5422 M
What type of reaction is the following: 2 KI(aq) + Pb(NO3)2(aq) → PbI2(s) + 2 KNO3(aq)
Double-replacement reaction
What is the ideal gas law equation, and what do each of the variables represent?
The ideal gas law is PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the ideal gas constant (0.0821 L·atm/mol·K), and T is temperature in Kelvin.
If the wavelength of light is 400 nm, what is the frequency of the light? (Speed of light = 3 × 108 m/s)
7.5 × 10¹⁴ Hz.
What is the ground-state electron configuration for Fe3+
[Ar]3d5
What is the mass of 9.44 × 1024 molecules of NO2? The molar mass of NO2 is 46.01 g/mol. (NA = 6.022 x 1023/mol)
721 g
Determine the empirical formula of C6H6
CH
A sample of gas has a volume of 3.0 L at 1.0 atm. If the pressure is increased to 2.0 atm at constant temperature, what will be the new volume?
1.5 L.
Electromagnetic spectrum includes...
Radio waves, microwaves, infrared light, visible light, ultraviolet light, X-rays, and gamma rays.
what are the allowed mℓ values?
-2, -1, 0, +1, and+2.