Cards in this guide (32)
How many moles of magnesium oxide are formed when 4 moles of magnesium react with oxygen
Four (4) moles of magnesium oxide are formed when 4 moles of
magnesium react with oxygen.
The subscripts of a compound indicate
Which of these is determined by an empirical formula
the lowest whole number ratio of elements in a compound A+
A gas held at 798 mmHg in a 400 mL flask is released into a 3 L flask What will be the new gas pressure
The ideal gas law measures pressure in
Laboratory data indicates a compound is composed of 43.3 percent sodium 11.3 percent carbon and 45.3 percent oxygen How many grams of each element could be presumed to be present
43.3 g Na, 11.3 g C and 45.3 g O
In the ideal gas law n represents
Sophie was asked to distinguish gases from solids and liquids Which of the following answers would be most correct
Gases are the least dense, have the greatest particle energy,
and have no specific shape.
Subtracting four from the period number of an inner-transition metal will indicate the number of shells
Choose the compound that has a molar mass of 18 grams
What is The law that states The volume of a gas increases as its pressure decreases and the volume of a gas decreases as its pressure increases
Choose the empirical formula
The formula for sulfuric acid is HËÃSOËÅ A mole of sulfuric acid would have a mass of grams
It would have a mass of 98 grams.
What term is defined as the number of moles of solute divided by the number of liters of solution
Molarity, abbrev. M, units: mol/L, mmol/ml
An unknown sample with a molecular mass of 180.0g is analyzed to yield 40 percent C 6.7 percent H and 53.3 percent O What is the empirical formula and the molecular formula of this compound
A compound is found be 36.5 percent Na 25.3 percent S and 38.0 percent O What is its empirical formula
The elements in an imaginary compound exist in the mole ratio of 1 3 1 for elements XY What will the empirical formula for the compound be
Vinegar contains acetic acid The formula for acetic acid is CHËÄCOOH One mole of acetic acid has a mass of grams
Type the capital letter that represents this equation after it has been correctly balanced Press Enter
A baker uses the term one dozen to indicate a specific quantity 12 What quantity does the chemists term one mole indicate
When determining empirical formulas from laboratory data the mole ratio is used to determine what
Calculate the number of moles in 27.50 grams CaCOËÄ Type the correct answer then press Enter
Using the periodic chart indicate the most common charge of magnesium
Calculate the empirical formula of a compound formed from 3 percent C 0.3 percent H and 96.7 percent you Which formula below correctly represents the empirical formula
A compound formed of 0.059 mol hydrogen and 0.94 mol oxygen has a molecular mass of 34.0 gmole What is the molecular formula of this compound
The formula for sugar is C12H22011 how many moles of carbon are in 2 moles of sugar
If there are 2 moles of sugar. and 12 atoms of carbon per sugar
molecule then there will be 24 moles of carbon atoms.
What law does the formula pv c
The formula PV = C is done by the Gas Law to measure pressure
and volume's relationship.
A compound found to contain 75.7 arsenic and 24.3 oxygen would have which of the empirical formulas below
The formula for methane is CH4. Four moles of methane would have a mass of how many grams
Four moles of methane would have a mass of 64,12 grams.
The formula for ethyl alcohol is C2H5OH. The mass of 2 moles of ethyl alcohol would be how many grams
The mass of 2 moles of ethyl alcohol would be 92,14 grams.
Use the electronegativity chart to determine the type of bond that will form between this pair of elements.
Use the electronegativity chart to determine the type of bond
that will form between this pair of elements.
N + N
Choose the best definition of STP
a term that indicates a combined measurement of standard atmospheric pressure and room temperature. A+