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Polar solvents dissolve _____ solutes, and non-polar solvents dissolve _____ solutes. Pt 1: A. Polar B. Non-polar Pt 2: A. Polar B. Non-polar

How can millimoles (mmol) be calculated from molarity and volume? Given that molarity is defined as mol/L, why can molarity also be calculated from mmol/mL?

Draw the Lewis structure of the hypochlorite ion, including lone pairs.

Determine the molecular geometry about each interior atom and make a sketch of C2H2 (skeletal structure: HCCH).

What is usually the shelf life of hydrogen peroxide?

What is the correct Lewis structure for hypochlorous acid, HOCl? Hint: Oxygen is the central atom. A. :H-O-C: B. :H-O-CH-o-d:

Helium (He) has an atomic number of 2. Why is it chemically stable?

The molecule XeF2 does not obey the octet rule. Draw its Lewis structure. State the type of octet-rule exception. Include lone pair electrons in the Lewis structure.

What is the correct structure of aspirin? Select one: A. Benzene ring with carboxylic acid and hydroxyl substituents on adjacent carbons B. Benzene ring with carboxylic acid and methyl ketone substituents on adjacent carbons C. Benzene ring with carboxylic acid and methyl ester on adjacent carbons D. Benzene ring with carboxylic acid and methyl ester on opposite carbons E. Benzene ring with carboxylic acid and hydroxyl substituents on opposite carbons

An element has 35 protons, 36 electrons, and 45 neutrons. This is called a(n) __________ because there are __________ electrons compared to protons.

What is the Lewis structure for CH3CO2H?

Explain the following statement: "Dissolving sugar in water is a physical change, but heating sugar to form caramel is a chemical change."

What is the molar mass of CO?

Complete the paragraph to describe the characteristics of a silicon tetrahydride molecule (SiH4). The Lewis structure and table of electronegativities are given. The bond polarities of SiH4 are ______, the molecular shape is ______, and the molecule is ______.

What is the molar mass of KBr, and how did you find it?

A neutral atom of aluminum has 14 neutrons and 13 protons. How many electrons does this aluminum have?

What is the molar mass of CaSO4?

H₂S has what kind of molecular shape? A. Linear B. Bent C. Trigonal planar D. Tetrahedral

Is gasoline a mixture or a compound?

Which of the following is an exception to the octet rule? Ignore that hydrogen has a duet. A. CO2 B. NH4+ C. H2O D. SF6

How many valence electrons are available for bonding in bromine (Br)?

Draw the Lewis structure for COCl₂, including lone pairs. What is the molecular shape of COCl₂? Is the C-Cl bond in COCl₂ polar or nonpolar? What is the Cl-C-Cl bond angle? Is the molecule COCl₂ polar or nonpolar?

Determine the molar mass of KHP. Show your work with units. Calculate the mass of potassium hydrogen phthalate (KHP) required for a 25.0 mL titration with the prepared NaOH.

What is the molar mass of sodium oxide (Na₂O)? A. 30 grams B. 54.99 grams C. 61.98 grams D. 38.99 grams

Find the molar mass of PCl3. ​

Draw the Lewis dot structure for H2.

Draw the Lewis Dot Structure for Argon in the ground state.

Is HBr classified as a strong acid, weak acid, strong base, or weak base? Explain.

Draw the Lewis structure for the trisulfur [tex]S3[/tex] molecule. Be sure to include all resonance structures that satisfy the octet rule.

Elements that have 7 valence electrons are located in which group?

In a neutral solution, the concentration of hydrogen ions is equal to the concentration of hydroxide ions, whereas a basic solution has a(n) ____________________.

What is the number of valence electrons in a sodium ion (Na +1 )? (atomic number of Na = 11)

How many total valence electrons are present in copper (Cu)? Select one: A. 09 B. 64 C. 29 D. 11

The Lewis structure of N2 H2 shows: A. a nitrogen-nitrogen triple bond B. a nitrogen-nitrogen single bond C. each nitrogen has one nonbonding electron pair D. each nitrogen has two nonbonding electron pairs E. each hydrogen has one nonbonding electron pair

Compare and contrast synthesis reactions and decomposition reactions.

Write the Lewis symbols for each of the following ions: Li+

Express your answer as a chemical formula for acetic acid (vinegar solution). Identify the phase in your answer.

What element has the electron configuration of 1s22s22p63s23p5? A. Chlorine B. Sulfur C. Aluminum D. Neon

How do you convert grams to moles and moles to grams?

Choose the best Lewis structure for CH2 Cl2 .