5th assessment review

What is the molar mass of NaBr

• 381.9g/mol

• 102.9 g/mol

• 213.6g/mol

• 93.0g/mol

What is the mass of one mole of aluminum?

• 27 g

• 13 g

• 54 g

• 14 g

Find the percent composition of CaCl₂?

• Ca: 36.11%; Cl: 63.88%

• Ca: 53.12%; Cl: 100%

• Ca: 36.11%; Cl: 83.56%

• Ca: 46.11%; Cl: 63.88%

An empirical formula:

• is a formula that calculates the coefficients of a compound in a balanced equation.

• is the simplest whole-number ratio of moles of elements in the compound.

What is the empirical formula of the following molecular formula:  C₃H₆

• C₃H₆

• CH₂

• C₂H₄

• CH₃

Is the equation balanced?: 2H₂O + O₂ --> 4MgO + 3Fe

• Yes

• No

Balance this equation-
__P₄ + __O₂ --> __P₂O₃

• it is already balanced

• 2, 1, 3

• 1, 2, 3

• 1, 3, 2

What type of reaction occurs between an element and a compound?
Zn + 2HCl --> ZnCl₂ + H₂

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

What kind of reaction is this:
2H₂O₂ →2 H₂O + O₂

• Synthesis

• Decomposition

• Single Replacement 

• Combustion

What is coach T’s name?

• Terry

• Tumlinson

• Tumbleson

• Trackandfield