You are going to do a precipitate reaction to determine the % purity of the CaBr2 in a very old and crusty bottle labeled “Calcium Bromide.”  You carefully measure out 20.000 grams of solid CaBr2 and add water until the total volume of the solution is 750.00 mL. You recently bought a guaranteed 1.0000 M solution of high quality Na3PO4.  You measure out 200.00 mL of the 1.0000 M Na3PO4 and add 100.00mL of water to make a dilution. You are going to mix 50.00 mL of your CaBr2 solution with some of your diluted Na3PO4 and filter out the precipitate. Write the molecular equation (it is always implied that you must balance equations and include s,l, g, or aq) Write the net ionic equation (it is always implied that you must balance equations and include s,l, g, or aq) Calculate the molarity of the CaBr2 solution you made if the CaBr2 was 100% pure.  (The molar mass of CaBr2 is 199.88 g/mol)

In the laboratory you are given the task of separating Ba2+ and Pb²+ ions in aqueous solution. For each reagent listed below indicate if it can be used to separate the ions. Type "Y" for yes or "N" for no. If the reagent CAN be used to separate the ions, give the formula of the precipitate. If it cannot, type "No" Y or N Reagent Formula of Precipitate if YES 1. Na₂CO3 2. 3. NaOH Na₂S

Exp # 2: suppose you have a {Zn2+(aq), Fe3+(aq)} solution, and you’re asked to separate the two ions, how do you seperate the ions and form a precipitate?

In the laboratory, you are given the task of separating Ba2+ and Co2+ ions in an aqueous solution. For each reagent listed below, indicate if it can be used to separate the ions. Type "Y" for yes or "N" for no. If the reagent CAN be used to separate the ions, give the formula of the precipitate. If it cannot, type "No" Y or N Reagent Formula of Precipitate if YES   HCl  Na2S  K2CO3

A science teacher needs to determine the concentration of an old, unmarked bottle of hydrochloric acid. She prepares a base titrant by dissolving 40.0 g of potassium hydroxide in 500.0 mL of water. The base is pipetted into a 28.00 mL sample of the acid, which also contains phenolphthalein as an indicator. The solution turns from clear to pink after the addition of 7.34 mL of base. What is the concentration of the hydrochloric acid?

O Microsoft O shift V A chemistry student weighs out 0.0608 g of formic acid (HCHO₂) into a 250. mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.1400M NaOH solution. OCHEMICAL REACTIONS Determining the volume of base needed to titrate a given mass... Calculate the volume of NaOH solution the student will need to add to reach the equivalence point. Be sure your answer has the correct number of significant digits. W Microsoft Microsoft 6.52.210... tab esc caps lock mL control Explanation ! 1 (8) Q A Check N © 2 W S #3 X T option command E x10 X D NOV 14 $ 4 C R S F do L % 5 V T G tv ♫ 6 MacBook Pro 9 Y & 7 H Ⓒ2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility U 8 1 9 BN M A O J K O O JOD 05 L H W P > { I command option DOCX + 11 ? | 1 9 OC

A researcher has a sample of potassium chloride that is contaminated with magnesium chloride. They weigh 5.00 g of the sample, dissolve it in 1.00 L of water, and determine the chloride ion concentration to be 0.0708 M. What mass (in g) of the 5.00 g sample was magnesium chloride?

OCHEMICAL REACTIONS Determining the volume of base needed to titrate a given mass... chemistry student weighs out 0.0570 g of chloroacetic acid (HCH₂CICO2) into a 250. mL volumetric flask and dilutes to the mark with distilled water. He lans to titrate the acid with 0.2000M NaOH solution. Calculate the volume of NaOH solution the student will need to add to reach the equivalence point. Be sure your answer has the correct number of significant digits. mL Explanation Check AUG 2 0.0 X e S tv W 3/5 X MacBook Air Hu © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center A

A student mixes 100.0 mL of 0.500 M AgNO3 with 100.0 mL of 0.500 M CaCl2. Write the balanced molecular equation for the reaction. Write the net ionic equation for the reaction. How many grams of precipitate will form? What is the concentration of Ag+, NO3‒, Ca2+, and Cl‒ in the final solution (assume volumes are additive).

In the laboratory you are given the task of separating Ca2+ and Fe2+ ions in aqueous solution. For each reagent listed below indicate if it can be used to separate the ions. Type "Y" for yes or "N" for no. If the reagent CAN be used to separate the lons, give the formula of the precipitate. If it cannot, type "No" Y or N 1. 12. 3 Reagent Formula of Precipitate if YES ка K₂SO4 Na CO