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What is the charge of the anion O2− in coulombs?

Which of the following is the correct Lewis structure for ammonia (NH3)? Note: Hydrogen and nitrogen have one and five valence electrons respectively.

How many valence electrons does Silver (Ag) have? A. 1 B. 2 C. 3 D. 4

How many grams are in a gallon?

The electronic configuration of an element is 1s2 2s2 2p6 3s2 3p6 3d8 4s2. What is its group?

F₂ is diamagnetic while O₂ is paramagnetic. Explain this on the basis of molecular orbital theory.

What do the suffixes "-ite," "-ate," and "-ide" mean, and when do you use them?

A valid Lewis structure of ________ cannot be drawn without violating the octet rule. A. ClF₃ B. CO₂ C. CCl₄ D. PCl₃ E. SO₃

How much is 24 oz in ml?

Calculate the molar mass of Ba(C2H3O2)2 ​

Zinc (Zn) always has what charge?

What is the correct name of HNO2?

Write the formula for hydrosulfuric acid. Formula:

What is the name of the compound N2O5?

How would you describe the bonding in Br2? A. Nonpolar covalent B. Polar covalent C. Ionic

Draw the Lewis Dot Diagram for the following atoms and ions: Aluminum (atom and ion)

What type of compound is CS2 ? a) Ionic compound b) Covalent compound c) Metallic compound d) Polar compound

1 mg is equal to what type of unit?

What is the best resonance structure for SCN − , according to computer models and bond lengths? A. S-C double bond and C-N double bond. B. S-C single bond and C-N triple bond. C. S-C triple bond and C-N single bond. D. S-C single bond and C-N double bond.

On the periodic table, "Au" stands for the Latin word "aurum." What does "aurum" mean?

Which element, Oxygen (O) or Fluorine (F), has a smaller atomic radius? A. O, because the attraction between protons and valence electrons is weaker. B. F, because the attraction between protons and valence electrons is stronger. C. F, because the attraction between protons and valence electrons is weaker. D. O, because the attraction between protons and valence electrons is stronger.

What element has 14 protons, 14 neutrons, and 14 electrons?

Why does chromium have a 3+ charge? Why is chromium (VI) oxide [CrO3] not chromium (III) oxide?

How much is 30 mL in oz?

What is the molar mass of sodium bicarbonate, NaHCO₃?

The following name is incorrect. Select the correct IUPAC name. (E)-1-isopropyl-1-butene (select) (3E)-5,5-dimethyl-3-pentene (3E)-5-methyl-3-hexene (3E)-1,1-dimethyl-2-pentene (3E)-2-methyl-3-hexene

Nitroglycerin has a formula of C3H5 (NO3)3 . What is the molar mass of nitroglycerin?

Why is the symbol for potassium K instead of P?

On the basis of the reactions observed in the six test tubes, explain why the position of hydrogen cannot be fixed exactly with respect to all of the other elements listed in the activity series.

What elements have atomic numbers that add up to 200?

What is the charge on iodine (I) when it forms an ion? A. 1+ B. 1− C. 2+ D. 2−

What are the chemical formulas of the reactants in mixing vinegar and baking soda?

Determine the molecular geometry and bond angles for phosphorus trichloride, PCl3.

Locate the element helium (He) on the periodic table. What is the period number in which helium is found? What is the group name in which helium is found?

What is the molar mass of 2-propanol (C3H8O)?

A chemical reaction occurs when ______.

A 30.0 mL volume of 0.50 M CH3COOH (Ka=1.8*10^-5) was titrated with 0.50 M NaOH. Calculate the pH after addition of 30.0 mL of NaOH.

Guess how many water molecules self-ionize in one liter of water! A. 7 moles B. 1 mole C. 10,000,000 moles D. 0.0000001 moles

Draw the Lewis structure of SF2 , showing all lone pairs.

What makes a molecule polar? A. Nonpolar covalent bonds within the molecule that cancel out B. Ionic bonds between atoms of different electronegativities C. Bonds between atoms of the same electronegativity D. Polar covalent bonds within the molecule that are not symmetric