Chemistry Quiz

In the compound Cu₂O₃, we do not know the charge of the element Copper (Cu) by just looking at the periodic table. Based on its bond to Oxygen (O), what is the charge of Copper (Cu)?

• a. +1

• b. +2

• c. +3

• d. +4

Calculate the amount of energy that the water in the foam cup absorbed after the unknown metal was placed inside using the equation Q=mcΔT. The specific heat of water is 4.18 J/g°C.

• 148.5 J

• 152.3 J

• 158.7 J

• 162.4 J

Calculate the specific heat of the unknown metal using the Q value obtained from number 10.

• 0.385 J/g°C

• 0.425 J/g°C

• 0.475 J/g°C

• 0.515 J/g°C

Name the compound AlBr₃ using the numerical prefixes.

• Aluminum tribromide

• Aluminum bromide

• Aluminum tetrabromide

• Aluminum dibromide

Name the compound Na₇O₁₀ using the numerical prefixes.

• Heptasodium decaoxide

• Heptasodium oxide

• Sodium decaoxide

• Sodium oxide

Write the chemical formula for Tetraphosphorus trioxide.

• P₄O₃

• P₃O₄

• P₄O₄

• P₃O₃

Write the chemical formula for Dicalcium tetrafluoride.

• Ca₂F₄

• CaF₄

• Ca₂F₂

• CaF₂

Find the mass in grams of 10.2 moles of C₆H₁₂O₆.

• 180 grams

• 102 grams

• 1836 grams

• 612 grams

Find the number of moles that are present in 156.21 grams of H₂SO₄.

• 1.59 moles

• 0.89 moles

• 2.00 moles

• 1.60 moles

When Lithium Hydroxide (LiOH) pellets are added to a solution of sulfuric acid (H₂SO₄), lithium sulfate (Li₂SO₄) and water are formed. Write the balanced chemical equation for this reaction.

• 2LiOH + H₂SO₄ → Li₂SO₄ + 2H₂O

• LiOH + H₂SO₄ → Li₂SO₄ + H₂O

• 2LiOH + H₂SO₄ → 2Li₂SO₄ + H₂O

• LiOH + H₂SO₄ → Li₂SO₄ + 2H₂O