Question 1

Balance the equation for the reaction of silver nitrate with potassium phosphate to form silver phosphate and potassium nitrate. Write the reaction and the coefficients.

Accepted Answer

3AgNO₃ + K₃PO₄ → Ag₃PO₄ + 3KNO₃

Question 2

Assign the correct class name to each of the following reactions. A) 2Fe + O₂ → 2FeO B) BaCl₂(aq) + 2AgNO₃(aq) → 2AgCl(s) + Ba(NO₃)₂(aq) C) 2Al + 6HCl → 2AlCl₃ + 3H₂

Accepted Answer

synthesis; metathesis - precipitation; redox - single displacement

Question 3

Is each of the following compounds a covalent compound or an ionic compound? Write the answer in the blank. A) C₅H_{12 _____} B) Fe(OH)₃_{_____} C) HClO_{3 _____} D) K₃PO_{4 _____} E) (NH₄)₂SO_{4 _____}

Accepted Answer

covalent; ionic; covalent; ionic; ionic

Question 4

Which element, used in the production of transistors, is located in Period 5, Group 13?

Accepted Answer

Indium (In) is located in Period 5, Group 13 of the periodic table and is used in the production of transistors.

Question 5

Identify the best name for the compound AlCl₃, which is used in deodorants to prevent sweating.

Accepted Answer

AlCl3 is commonly known as aluminum chloride. The name aluminum trichloride is not used because the compound is ionic, and the prefix "tri" is unnecessary.

Question 6

Calculate the number of moles in 19.2 g of calcium chloride.

Accepted Answer

The answer of Calculate the number of moles in 19.2...

Question 7

Rank the following compounds in order from lowest melting point to highest melting point: CaF₂, MgO, NaCl

Accepted Answer

The melting point is influenced by the strength of ionic bonds. MgO has the highest melting point due to the strong ionic bonds from the +2 and -2 charges. CaF2 has a lower melting point than MgO but higher than NaCl due to its +2 and -1 charges. NaCl has the lowest melting point with +1 and -1 charges.

Question 8

Fill in the family name of each element.
A) calcium (Ca) _____
B) chlorine (Cl) _____
C) neodymium (Nd) _____
D) rubidium (Rb) _____
E) uranium (U) _____
F) xenon (Xe) _____

Accepted Answer

The answer of Fill in the family name of each...

Question 9

Calculate the number of grams in 2.1 moles AlPO₄.

Accepted Answer

The answer of Calculate the number of grams in 2.1...

Question 10

Select the formula for the compound lead(II) chloride, which is used to make ceramics.

Accepted Answer

Lead(II) chloride consists of one lead ion (Pb²⁺) and two chloride ions (Cl^-), resulting in the formula PbCl₂.

Question 11

Identify the formula for the compound calcium nitride, which is used as a source of the reactive nitride ion.

Accepted Answer

Calcium nitride has the formula Ca3N2, which reflects the combining of calcium ions (Ca2+) with nitride ions (N3-) in a 3:2 ratio to maintain electrical neutrality.

Question 12

Determine the theoretical yield of AgCl in grams that will be formed if 2.25 g of CuCl₂ react with 3.88 g AgNO₃, given the reaction CuCl₂(aq) + 2AgNO₃(aq) → Cu(NO₃)₂(aq) + 2AgCl(s).

Accepted Answer

The answer of Determine the theoretical yield of AgCl in...

Question 13

Calculate the number of moles in 16.1 g of NaBr.

Accepted Answer

The answer of Calculate the number of moles in 16.1...

Question 14

Given the reaction 2C₃H₈O + 9O₂ → 6CO₂ + 8H₂O, calculate the number of grams of carbon dioxide that will be produced when 15.4 g of oxygen reacts with excess C₃H₈O.

Accepted Answer

The answer of Given the reaction 2C₃H₈O + 9O₂ →...

Question 15

Which of the following is NOT a naturally occurring diatomic molecule?

Accepted Answer

Sulfur (S) naturally occurs primarily as an octatomic molecule (S8), not as a diatomic molecule.

Question 16

Name the compound Ca(C₂H₃O₂)₂, which is used to help prevent high blood phosphate levels in patients who are on dialysis.

Accepted Answer

Calcium acetate is the correct name for the compound Ca(C2H3O2)2, which is used to manage high blood phosphate levels in dialysis patients.

Question 17

Calculate the molar mass of dichlorine heptoxide.

Accepted Answer

The answer of Calculate the molar mass of dichlorine heptoxide....

Question 18

Name the compound Fe₂S₃, a compound produced as a by-product of desulfurization of fuel.

Accepted Answer

Fe₂S₃ is named iron(III) sulfide because it contains iron in the +3 oxidation state.

Question 19

Identify the name for the compound SO₃, a precursor for sulfuric acid.

Accepted Answer

Sulfur trioxide (SO3) is the correct name for the compound, which is a precursor for sulfuric acid.

Question 20

Which of the following compounds is NOT a salt?

Accepted Answer

Salts are ionic compounds composed of cations (positively charged ions) and anions (negatively charged ions). Choices A, B, and C represent ionic compounds: A) KI (potassium iodide), B) CaCO3 (calcium carbonate, with a typo in the question), and C) NH4Cl (ammonium chloride). Choice D, represented with subscript and superscript formatting issues, does not correspond to a known salt formula and is likely intended to represent a compound that does not fit the definition of a salt, such as a molecular compound.

Quiz 4: Chemical Evidence

Balance the equation for the reaction of silver nitrate with potassium phosphate to form silver phosphate and potassium nitrate. Write the reaction and the coefficients.

Assign the correct class name to each of the following reactions. A) 2Fe + O₂ → 2FeO B) BaCl₂(aq) + 2AgNO₃(aq) → 2AgCl(s) + Ba(NO₃)₂(aq) C) 2Al + 6HCl → 2AlCl₃ + 3H₂

Is each of the following compounds a covalent compound or an ionic compound? Write the answer in the blank. A) C₅H_{12 _____} B) Fe(OH)₃_{_____} C) HClO_{3 _____} D) K₃PO_{4 _____} E) (NH₄)₂SO_{4 _____}

Which element, used in the production of transistors, is located in Period 5, Group 13?

Identify the best name for the compound AlCl₃, which is used in deodorants to prevent sweating.

Calculate the number of moles in 19.2 g of calcium chloride.

Rank the following compounds in order from lowest melting point to highest melting point: CaF₂, MgO, NaCl

Fill in the family name of each element. A) calcium (Ca) ___ B) chlorine (Cl) _ C) neodymium (Nd) _ D) rubidium (Rb) _ E) uranium (U) _ F) xenon (Xe) ___

Calculate the number of grams in 2.1 moles AlPO₄.

Select the formula for the compound lead(II) chloride, which is used to make ceramics.

Identify the formula for the compound calcium nitride, which is used as a source of the reactive nitride ion.

Determine the theoretical yield of AgCl in grams that will be formed if 2.25 g of CuCl₂ react with 3.88 g AgNO₃, given the reaction CuCl₂(aq) + 2AgNO₃(aq) → Cu(NO₃)₂(aq) + 2AgCl(s).

Calculate the number of moles in 16.1 g of NaBr.

Given the reaction 2C₃H₈O + 9O₂ → 6CO₂ + 8H₂O, calculate the number of grams of carbon dioxide that will be produced when 15.4 g of oxygen reacts with excess C₃H₈O.

Which of the following is NOT a naturally occurring diatomic molecule?

Name the compound Ca(C₂H₃O₂) ₂, which is used to help prevent high blood phosphate levels in patients who are on dialysis.

Calculate the molar mass of dichlorine heptoxide.

Name the compound Fe₂S₃, a compound produced as a by-product of desulfurization of fuel.

Identify the name for the compound SO₃, a precursor for sulfuric acid.

Which of the following compounds is NOT a salt?

Quiz 4: Chemical Evidence

Balance the equation for the reaction of silver nitrate with potassium phosphate to form silver phosphate and potassium nitrate. Write the reaction and the coefficients.

Assign the correct class name to each of the following reactions. A) 2Fe + O2 → 2FeO B) BaCl2(aq) + 2AgNO3(aq) → 2AgCl(s) + Ba(NO3)2(aq) C) 2Al + 6HCl → 2AlCl3 + 3H2

Is each of the following compounds a covalent compound or an ionic compound? Write the answer in the blank. A) C5H12 _____ B) Fe(OH)3 _____ C) HClO3 _____ D) K3PO4 _____ E) (NH4)2SO4 _____

Which element, used in the production of transistors, is located in Period 5, Group 13?

Identify the best name for the compound AlCl3, which is used in deodorants to prevent sweating.

Calculate the number of moles in 19.2 g of calcium chloride.

Rank the following compounds in order from lowest melting point to highest melting point: CaF2, MgO, NaCl

Fill in the family name of each element. A) calcium (Ca) _____ B) chlorine (Cl) _____ C) neodymium (Nd) _____ D) rubidium (Rb) _____ E) uranium (U) _____ F) xenon (Xe) _____

Calculate the number of grams in 2.1 moles AlPO4.

Select the formula for the compound lead(II) chloride, which is used to make ceramics.

Identify the formula for the compound calcium nitride, which is used as a source of the reactive nitride ion.

Determine the theoretical yield of AgCl in grams that will be formed if 2.25 g of CuCl2 react with 3.88 g AgNO3, given the reaction CuCl2(aq) + 2AgNO3(aq) → Cu(NO3)2(aq) + 2AgCl(s).

Calculate the number of moles in 16.1 g of NaBr.

Given the reaction 2C3H8O + 9O2 → 6CO2 + 8H2O, calculate the number of grams of carbon dioxide that will be produced when 15.4 g of oxygen reacts with excess C3H8O.

Which of the following is NOT a naturally occurring diatomic molecule?

Name the compound Ca(C2H3O2) 2, which is used to help prevent high blood phosphate levels in patients who are on dialysis.

Calculate the molar mass of dichlorine heptoxide.

Name the compound Fe2S3, a compound produced as a by-product of desulfurization of fuel.

Identify the name for the compound SO3, a precursor for sulfuric acid.

Which of the following compounds is NOT a salt?

Assign the correct class name to each of the following reactions. A) 2Fe + O₂ → 2FeO B) BaCl₂(aq) + 2AgNO₃(aq) → 2AgCl(s) + Ba(NO₃)₂(aq) C) 2Al + 6HCl → 2AlCl₃ + 3H₂

Is each of the following compounds a covalent compound or an ionic compound? Write the answer in the blank. A) C₅H_{12 _____} B) Fe(OH)₃_{_____} C) HClO_{3 _____} D) K₃PO_{4 _____} E) (NH₄)₂SO_{4 _____}

Identify the best name for the compound AlCl₃, which is used in deodorants to prevent sweating.

Rank the following compounds in order from lowest melting point to highest melting point: CaF₂, MgO, NaCl

Fill in the family name of each element. A) calcium (Ca) ___ B) chlorine (Cl) _ C) neodymium (Nd) _ D) rubidium (Rb) _ E) uranium (U) _ F) xenon (Xe) ___

Calculate the number of grams in 2.1 moles AlPO₄.

Determine the theoretical yield of AgCl in grams that will be formed if 2.25 g of CuCl₂ react with 3.88 g AgNO₃, given the reaction CuCl₂(aq) + 2AgNO₃(aq) → Cu(NO₃)₂(aq) + 2AgCl(s).

Given the reaction 2C₃H₈O + 9O₂ → 6CO₂ + 8H₂O, calculate the number of grams of carbon dioxide that will be produced when 15.4 g of oxygen reacts with excess C₃H₈O.

Name the compound Ca(C₂H₃O₂) ₂, which is used to help prevent high blood phosphate levels in patients who are on dialysis.

Name the compound Fe₂S₃, a compound produced as a by-product of desulfurization of fuel.

Identify the name for the compound SO₃, a precursor for sulfuric acid.