P.S. -Atoms, Gram Formula Mass, and Resistance

Determine the gram-formula mass of H₂O.

• 3 g/mol

• 18 g/mol

• 8 g/mol

• 1 g/mol

What is the GFM of NaCl?

• 28 g/mol

• 58.5 g/mol

• 2 g/mol

• 17 g/mol

Calculate the molar mass of Ba(C₂H₃O₂)₂

• 255.3 g/mol

• 237.3 g/mol

• 228.3 g/mol

• 196.3 g/mol

Calculate the molar mass of NH₄NO₂

• 50 g/mol

• 60 g/mol

• 64 g/mol

• 78 g/mol

Determine the gram formula mass of H₂O₂?

• 18 g/mol

• 34 g/mol

• 8 g/mol

• 1 g/mol

What is the unit of measurement for resistance?

• Voltage

• Ampere

• Watts

• Ohms

If the current through a resistor is 2A and the voltage across it is 12V, what is the resistance

• 12Ω

• 6Ω

• 24Ω

• 0.167Ω

How do you calculate resistance?

• Current x Voltage

• Voltage x Power

• Voltage ÷ Current

• Current ÷ Voltage

How do you calculate current from voltage and resistance?

• Current = voltage x resistance

• Current = resistance x power

• Current = voltage ÷ resistance

• Current = resistance ÷ voltage

What is the resistance if the current is 2A and the voltage is 10V?

• 8 Ω

• 20 Ω

• 12 Ω

• 5 Ω