Honors-Mole Conv, % Comp, Emp/Mol Formulas

The number used to do moles-atoms conversions is known as?

• Avogadro's number, 6.022 x 10^23

• Planck's constant, 6.626 x 10^{-34}

• Boltzmann's constant, 1.38 x 10^{-23}

• Faraday's constant, 96485 C/mol

Tags

NGSS.HS-PS1-7

The formula used to find molar mass when provided with mass and number of moles is:

• Molar mass = mass / number of moles

• Molar mass = number of moles / mass

• Molar mass = mass x number of moles

• Molar mass = mass + number of moles

Which one will have the highest mass; 1 mole of oxygen, 1 mole of gold, 1 mole of hydrogen, or 1 mole of sodium?

• 1 mole of oxygen

• 1 mole of gold

• 1 mole of hydrogen

• 1 mole of sodium

When given a compound’s name, you need to determine the formula. Which of the following is the first step in this process?

• Identify the elements present in the compound

• Determine the valency of each element

• Write the symbols of the elements

• Balance the charges to write the formula

Tags

NGSS.MS-PS1-1

What is the equation for percent composition?

• Percent composition = (mass of element/mass of compound) x 100

• Percent composition = (mass of compound/mass of element) x 100

• Percent composition = (mass of element/mass of compound) x 10

• Percent composition = (mass of element/mass of compound) x 1000

Calculate the molar mass for the compound H₂SO₄.

• 98.08 g/mol

• 100.10 g/mol

• 98.00 g/mol

• 99.09 g/mol

Write the correct chemical formula for Lithium carbonate.

• LiCO₃

• Li₂CO₃

• Li(CO₃)₂

• Li₃CO₃

Tags

NGSS.MS-PS1-1

Write the correct chemical formula for tetraphosphorus hexoxide.

• P₄O₆

• P₄O₁₀

• P₂O₅

• P₂O₃

The compound N₂O is known as:

• Nitrogen Dioxide

• Mononitrogen Oxide

• Nitric Tetraoxide

• Dinitrogen monoxide

The correct name for the compound Ca(OH)₂ is:

• Calcium Hydroxide

• Calcium Oxide

• Calcium Carbonate

• Calcium Sulfate

Tags

NGSS.MS-PS1-1