Everything Atomic
Which is positive, an Anion or a Cation.
Cation
C136
What is Carbon-13's Atomic Number?
6
What element is Atomic Number 1?
Hydrogen (H)
How many moles of H3O in a 105 g sample (H3O Molar Mass: 19g/mol).
7 moles H3O
What numbers of moles of O2 is needed to produce 28.2 grams of P4O10 from P? (Molar Mass of P4O10: 284 g/mol)
100%
What element has 80 protons?
Mercury
Isotopes are atoms with the same number of ______ and different number of _____.
Protons; Neutrons
How many protons in Atomic Number 16?
16, Sulfur.
What is the mass of 1.58 moles of CH4 (CH4 Molar Mass: 16.0g/mol)?
25.3g of CH4
What is the mass percent of Iron in Iron Oxide (Fe2O3 Molar Mass: 159.69 g/mol)?
69.9%
What is the element name for Atomic Number 25?
Manganese
How many neutrons in Mo9642?
54 neutrons
A "staircase" seperates the periodic table. What does it seperate?
What is the mass of 5.34×1015 particles of C2H6?
2.66×10-7 g C2H6
False
What is the element name for Atomic Number 26 with 6 neutrons?
Carbon or Carbon-12
When an atom loses a proton it is a different element. When an atom loses a neutron it is a(n) ______.
Isotope
The top right of the periodic table is more ________ than the bottom left.
Electronegative
How many molecules of H2O in a 1.44g sample (H2O Molar Mass: 18.0g/mol)?
4.82 x 1022 particles.
What is the mass percent of Oxygen in Diethyl ether (C2H5)2O?
21.6%
What can a mass spectrometer determine?
Unknown compounds via molecular weight.
Atomic Weight, Isotopes and just unknown compounds are all valid answers.
What is another way to write Carbon-11?
C116
What alkali metal is most reactive in water?
Potassium (K)
What mass of CO2 gas occupies a volume of 100L (CO2 Molar Mass: 44.0 g/mol)?
196g of CO2
A sample of an unknown compound with a mass of 0.847 g has the following composition: 50.51 % fluorine and 49.49 % iron. When this compound is decomposed into its elements, what mass of each element would be recovered?
.428g F
.419g Fe