MILLIONAIRE FINAL EXAM

WHO WANTS TO BE A MILLIONAIRE

A chemist millionaire actually

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PbNO₃

Pb₂I

PbI₂

PbI

When potassium iodide (KI) reacts with lead (II) nitrate (Pb(NO₃)₂), forming a bright yellow precipitate and a soluble salt, what is the precipitate formed?:

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Moles (Mass in grams) / (Atomic Mass)

Moles (Mass in g) / (Molarity Mass)

Moles (Mass in grams) x (Molar Mass in g/mol)

Moles (Molarity) x (Mass in g)

Which formula is used for the convention of grams to moles?

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CuSO₄

FeSO₄

Cu

Fe₂(SO₄)₃

In a single replacement reaction between iron (Fe) and copper sulfate (CuSO₄), where iron's oxidation state changes from 0 to +2, what is the product formed?

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Matter cannot be created or destroyed in a chemical reaction

Atoms can not be created or destroyed as needed during a chemical reaction

The mass of reactants always decreases while the base increases.

Mass cannot be created or destroyed in a chemical reaction

What is the law of conservation of mass?

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Moles (CO2) ≈ 3.42 moles, Molecules (CO2) ≈ 2.04 × 10^24 molecules

Moles (CO2) ≈ 0.57 moles, Molecules (CO2) ≈ 3.42 × 10^23 molecules

Moles (CO2) ≈ 1.14 moles, Molecules (CO2) ≈ 6.85 × 10^23 molecules

Moles (CO2) ≈ 2.27 moles, Molecules (CO2) ≈ 1.37 × 10^24 molecules

If you had 50 grams of Carbon dioxide (CO2). How many moles and molecules of carbon dioxide do you have?

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80.7g

30.3g

60.2g

40.5g

How many grams are in 30 moles of Hydrogen H2?

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1:2:2:1

3:1:1:2

3:1:2:2

1:1:1:1

Balance the following equation C12H22O11 + H2O ----> C6H12O6 + C6H12O6

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Iron(III) sulfate

Iron sulfate

Ferrous sulfate

Iron(II) sulfate

What is the name for the compound with the formula Fe2(SO4)3?

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10

Avogadro's number is the molar volume of one mole of a gas.

Avogadro's number is the molar mass of one mole of a substance.

Avogadro's number is the number of atoms or molecules in one mole of a substance.

Avogadro's number is the number of moles in one mole of a substance.

How does Avogadro's number relate to the concept of a mole?

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1.8 x 10^24

6.02 x 10^23

9.03 x 10^23

If you have 3 moles of oxygen gas (O2), how many oxygen molecules are present?

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Decomposition reaction

Synthesis reaction

Combustion reaction

Single displacement reaction

When iron (Fe) reacts with sulfur (S) to form iron sulfide (FeS), what type of reaction is this?

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The law of conservation of matter only applies to closed systems.

The law of conservation of matter is violated because mass is not conserved.

The law of conservation of matter is upheld because the total mass before and after the reaction is the same.

The reaction is not balanced, so the law of conservation of matter does not apply

In a chemical reaction, if 10 grams of reactant A react with 15 grams of reactant B to produce 20 grams of product C, which statement is true?

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2:5:3:2:10:8:12

5:2:1:2:10:8:1

2:5:3:2:10:6:2

2:5:3:2:10:8:1

Balance the following equationKMnO4 + H2C2O4 + H2SO4 -> MnSO4 + CO2 + H2O + K2SO4

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Yes, the water + salt weigh the same when reacted than when they are not reacting

No, the salt crystals disappear because they react so their mass is lost

Yes, the water + salt weigh the same when mixed than when they are not mixed

Yes, the salt-water mix weighs more than the starting water, demonstrating that the mass was conserved

Does dissolving salt in water demonstrate the conservation of mass?

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N=+5 H=+1 P=+5 O= -2

N=+3 H=+1 P=+5 O= -2

N=-3 H= +1 P= +3 O= -2

N= +5 H= -1 P= +5 O= -2

What are the oxidation numbers for (NH4)(PO3)?

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Al2O3 Aluminum Oxide

Al3O2 Trialuminum Dioxide

AlO3 Aluminium Trioxide

Al2O3 Dialuminum Trioxide

What is the name and formula for the binary compound with aluminum and oxygen?

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Ti(C2H3O2)

Ti(Cr2O7)

Ti2(Cr2O7)

Ti(HBrO3)

Which is the chemical formula of titanium acetate?

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10

Decomposition, as the reactants break down into multiple products.

Single displacement, because one element displaces another in the products.

Double displacement, where the positive ions in the reactants switch places.

Synthesis, since there are two reagents forming one product.

In the reaction between sodium hydroxide (NaOH) and hydrochloric acid (HCl) to produce sodium chloride (NaCl) and water (H2O), which type of chemical reaction is occurring?

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YOU WIN!