Correct and Verified Solutions 2025-
2026 Updated.
Which of the following is a heterogeneous mixture?
a.) bottled water
b.) snickers bar
c.) grape juice
d.) apple juice - Answer B.) Snickers bar
Which group of elements forms monoatomic ions with a charge of +2? - Answer Alkaline
earth metals
What is the name of an element that corresponds to a period 3 chalcogen? - Answer Sulfer
What is -40 degrees C in Fahrenheit and in Kelvin? - Answer -40 fahrenheit, 233 kelvin
Which scientist completed the oil drop experiment? What did he discover? - Answer
Millikan-the charge of an atom
Convert 15.0Mg/dL to ng/kL - Answer 1.5x10^20 ng/kL
How many grams of oxygen are in 100g of Glucose (C6H12O6) - Answer 53.33g
If you have equal masses of the following compounds, which would contain a greater number of
ions
a.)NaBr
b.)KCl
c.) Na2S - Answer Na2S
Which of the following four electron transitions in the hydrogen atom is associated with
radiation having the shortest wavelength?
a.) n=1 -> n=2
b.)n=2 -> n=3
c.)n=3 -> n=4 - Answer A.) n=1 -> n=2
,What is the energy of a photon of light that has a wavelength of 99.4 nm? - Answer E=
2.00x10^-19 J
What is the wavelength of radiation of a photon that gives off 5.00x10^-19 J of energy ? -
Answer 397 nm
TempK to TempC - Answer Temp C + 273.15
Temp F to Temp C - Answer TempC x 9/5 + 32
Temp C to Temp F - Answer 5/9 ( Temp F - 32)
Temp C to Temp K - Answer Temp K - 273.15
Planck's Constant (h) - Answer 6.626x10^-34 Jxs
Speed of Light (c) - Answer 2.998x10^8 m/s
How to find (E) - Answer HxW
How to find (c) - Answer (~/)De broglie x V
Avogadro's Number - Answer 1 mol = 6.022x10^23
1mL = - Answer 1cm ^3
Density - Answer mass/volume
femto (f) - Answer 1 fm = 10^-15 m
pico (p) - Answer 1 pm = 10^-12 m
nano (n) - Answer 1 nm = 10^-9 m
micro (ju) - Answer 1 jum = 10^-6 m
, milli (m) - Answer 1 mm = 10^-3 m
centi (c) - Answer 1 cm = 10^-2 m
deci (d) - Answer 1 dm = 10^-1 m
deka (da) - Answer 1 dam = 10^1 m
hecto (h) - Answer 1 hm = 10^2 m
kilo (k) - Answer 1 km = 10^3
mega (M) - Answer 1 Mm = 10^6 m
giga (G) - Answer 1 Gm = 10^9 m
tera (T) - Answer 1 Tm = 10^12 m
Peta (P) - Answer 1 Pm = 10^15 m
Atom - Answer smallest particle of an element that retains the chemical characteristics of
that element.
Element - Answer substance that cannot be separated into simpler substances by a chemical
process
Compound - Answer Substance composed of proportions of two or more elements
chemically bonded together; can be separated by chemical processes.
Array - Answer ordered arrangement of something
Law of Definite Proportions - Answer Compounds always contain the same proportion of
their component elements.
ex.) all water is water