What is the molar mass of magnesium chloride, MgCl₂? Express your answer to four significant figures and include the appropriate units. What is the molar mass of propanol, C3H₂OH? Express your answer to four significant figures and include the appropriate units. What is the molar mass of calcium nitrate, Ca(NO3)2? Express your answer to five significant figures and include the appropriate units.

(b) Zn(NO3)2(aq) + 2 N2OH(aq) → Zn(OH)2(s) + 2 NaNO3(aq) Write the complete ionic equation. (Include states-of-matter under the given conditions in your answer. Use the lowest possible whole number coefficients.) chemPad О Help Greek List the spectator ions. (Include states-of-matter under the given conditions in your answer. Separate substances in a list with a comma. Use the lowest possible coefficients.) chemPad О Help X.x" →=- Greek Write the net ionic equation. (Include states-of-matter under the given conditions in your answer. Use the lowest possible whole number coefficients.) chemPad О Help Greek Zu2+ Zu+2 Classify the type of reaction given for (b). (Select all that apply.) a combination reaction na combustion reaction O a decomposition reaction V a metathesis reaction V a precipitation reaction

What is the mass of 3.5 x 10^-3 molecules of copper (II) carbonate? Use correct significant figures and units.

1.) What is the molar mass for aluminum sulfate? Please use the atomic masses on the periodic table. Express your answer with the correct significant figures and units for molar mass. Mass Choices:  123.05 342.17 6.02 x 10^23 273.08 Unit Choices:  mol mol/g g g/mol 2.) How many grams are there in 5.699 moles of copper, Cu?  Express your answer with the appropriate significant figures and units.  0.08968 g/mol Cu 362.2 g/mol Cu 362.2 g Cu 0.08968 g Cu

Balance the following chemical reaction. Enter the sum of the balanced coefficients as your answer. Assign "blank" coefficients a value of 1. silver iodide + sodium sulfide → silver sul fide + sodium iodide

[Tutorial: Limiting reactant stoichiometry] This question will walk you through the steps of calculating the mass of products produced based on your determination of the limiting reactant.   b) Step 2a: Use dimensional analysis to determine the theoretical yield of the product. Calculate the theoretical yield in grams Al₂O₃ from the complete reaction of 64.7 grams Al according to the following balanced chemical equation: 2 Al(s) + Fe₂O₃(s) → Al₂O₃(s) + 2 Fe(s) c) Calculate the theoretical yield in grams Al₂O₃ from the complete reaction of 201 grams Fe₂O₃ according to the following balanced chemical equation: 2 Al(s) + Fe₂O₃(s) → Al₂O₃(s) + 2 Fe(s) d) Which of the following substances is the limiting reactant? e) What is the mass in grams of the excess Fe₂O₃ remaining after the partial reaction of 201 g Fe₂O₃ with 64.7 g Al? Give your answer to three significant figures.

Is H₂O₂ being created or destroyed by the chemical reaction? If H₂O2 is being created or destroyed, what is the rate at which it is being created or destroyed 1000 seconds after the reaction starts? Round your answer to 2 significant digits. Also be sure your answer has the correct unit symbol. If H₂O₂ is being created or destroyed, what is the average rate at which it is being created or destroyed during the first 1000 seconds of the reaction? Round your answer to 2 significant digits. Also be sure your answer has the correct unit symbol. ооо created destroyed neither created nor destroyed 0 x10 00 X Ś 0

A chemist prepares a solution of potassium bromide (KBr) by measuring out 31. mg of KBr into a 100. mL volumetric flask and filling to the mark with distilled water. Calculate the molarity of Br anions in the chemist's solution. Be sure your answer is rounded to the correct number of significant digits. alo mol L

Calculate the mass in grams of 3.00 x 1024 molecules of methanol. The chemical formula for methanol is CH,O. mass: + TOOLS X10

If 31.0 g of MgSO4⋅7H2O is thoroughly heated, what mass of anhydrous magnesium sulfate will remain? Express your answer to three significant figures and include the appropriate units.