Choose the correct answer below, to complete the sentence.  A crystal (solid) of NaCl was added to a NaCl solution. After some time, it was observed that the crystal did not change in size. The original solution was probably: Saturated b. Unsaturated c. Supesaturated

||| 43°F Mostly clear O ELECTRONIC STRUCTURE AND CHEMICAL BONDING Counting electron pairs in a Lewis structure with double or tripl... Below is the Lewis structure of the nitrogen (N₂) molecule. :N:::N: Count the number of bonding pairs and the number of lone pairs around the left nitrogen atom in this molecule. bonding pairs: lone pairs: Explanation Check X 3 Q Search ہے LO 1/5 Jessica V ? olo 8: 1 © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center Accessibility 9:36 PM 4/23/2023

In your first task, you are required to prepare a 100 mL solution of sodium bicarbonate at a concentration of 0.50 M. Complete the following table and calculate the mass of sodium bicarbonate needed to prepare this solution. Molecular weight of sodium bicarbonate Required final concentration Required final volume Amount of sodium bicarbonate needed to make 1 L at 0.5 M Amount of sodium bicarbonate needed to make 100 mL at 0.5 M Mass (g) = Amount (mol) × Molecular Weight (g/mol) Value 84.01 Now that you know the amount of sodium bicarbonate in mol needed to make your solution, you can convert this value into the mass by using the molecular weight of the compound. The following equation may be helpful: Mass of sodium bicarbonate needed to make 100 mL at 0.5 M Units g/mol M (mol/L) L mol mol g In the 100 mL 0.5 M solution, how many molecules of sodium bicarbonate have been added. Hint - In 1 mole there are 6.022 × 10²³ molecules.

Match the definition with it's correct word. A mixture composed of a solute dissolved in a solvent. The greater substance that does the dissolving in a solution. A term that describes when a solid solute does not dissolve in a solid solvent. [Choose ] [Choose ] Soluble Solvent Solution Insoluble Miscible Immiscible Solute >

A common colligative property is that a solute will...   Raise the boiling point   none of these   Raise the vapor pressure   Raise the freezing point   all of these

When a pure substance is added to water, the temperature of the water increases and a solution is formed that does not conduct electricity. The statement describes which of the following changes? Select one: a. dissociation and dissolving b. dissolving but not dissociation c. dissociation but not dissolving d. neither dissociation or dissolving occurs

3. Use the information in the solubility table below to respond to each of the following questions. a. Which salt is most soluble in water at 0 °C? b. Which salt is least soluble in water at 0 °C? c. Which salt is least soluble in water at 100 °C?

Explain how Compound A and Compound B will dissolve in water using the correct vocabulary including solvation, dissociation, ionic, and covalent. Br ) Br K Br Compund A Compund B Paragraph BIU ...

Which statement best describes the bond length(s) in the nitrite ion (shown)? The bond length of N-O is 136 pm and the bond length of N=O is 122 pm. Y-M |-- A. Both bond lengths are 258 pm. B. There are two bonds lengths, one is 136 pm and the other is 122 pm. C. Both bond lengths are 129 pm. O D. Both bond lengths are 136 pm.

Solid potassium chromate is slowly added to 125 mL of a 0.440 M barium nitrite solution until the concentration of chromate ion is 0.0127 M. The percent of barium ion remaining in solution is   %?