1.00 g mixture of Na2CO3and K2CO3was titrated with HCl. The analysis shows that there are 8.00x10-3moles of CO3-2 ions. Calculate the w/w% Na2CO3in the mixture.

please shows the steps

1.) The total pressure (P_T) os a sample of a gas collected over water at 13.0^oC is 0.588 atm. Determine the partial pressure (P_i) of the gas.

2.) Rearrange the ideal gas equation to solve for density (g/v). Hint: you will need to make a substitution for moles "n"

3.) Use your quation from (z) and the result from (l) to calculate the molecular weight of a gas if 303 ml of the gas, collected at 28^oC, weighed 0.347g.

Give the approximate chemical shifts, the expected peak multiplicities, and the

relative integration for methyl 2-bromopropionate (CH₃CHBrCO₂CH₃).

       chemical shift                    multiplicity                 relative integration

a.A peanut consists of 49.2% oil and 20.8% carbohydrate. (The remaining mass of the peanut is not combustible.) An average peanut has a mass of 0.75 grams. Determine the mass of oil and carbohydrate in one peanut. Then determine the amount of energy released (in kJ) when one peanut is burned

a.How many peanuts will it take to boil 1.00 liters of water?

Given the following information about Fe in aqueous solutions, what will be the ratio of (Fe(OH)₂⁺) to (Fe(OH)₃⁰) in solution at pH 6.0, 6.5, 7.0, 7.5, 8.0, 8.5?

Fe³⁺ + 2H₂O = Fe(OH)₂⁺ +2H⁺ logK = -5.7

Fe³⁺ + 3H₂O = Fe(OH)₃⁰ + 3H⁺ logK = -13.1

calculate the pressure in both atm and mmHg exerted if 20.0 mL of 0.10 M HCl reacts with excess magnesium in a 125 mL flask at 298 K. What mass of magnesium reacts? What would be the pressure if 1.0 M HCl is used? Assume the magnesium occupies no volume.

Write a balanced ionic equation for 1) the first acid-base reaction of maleic acid and sodium hydroxide, 2) the second acid-base reaction between C4H3O4-and sodium hydroxide. Finally 3) add the two equations together and cancel out spectator ions to get a net ionic reaction.

Standard copper potential = 0.339 V

% Error = [100 – (Theoretical/Experimental)] x 100

Please help me complete the table above.

Use Examples 4.16 to determine the  hybridization for each central atom ( respectively C, C, O, N)in the following molecule:

CH₃COONH₂

Group of answer choices

sp3, sp2, sp2, sp3

sp3, sp2, sp, sp2

sp3, sp2, sp , sp3d

sp3, sp2, sp3, sp3

If the sollubility of sodiym acetate (Molar Mass = 82 g/mol) is 76 grams per 100 grams of water, which of the following solutions would be considered supersaturated (holding more than the normal maxiym solution)? a.) 8.5 moles of sodium acetate dissolved in 1 L of water, b.) 1.8 moles of sodiym acetate dissoved in 300 mL of water, c.) 5.5 moles of sodiym acetate dissolved in 500 mL of water, or d.) 1.2 moles of sodium acetate dissoved in 200 mL of water? I would like to understand how to calculate these kinds of problems. Please explain step by step how I should go about solving this so that I may learn how to do it for myself. There is an answer on Chegg for this already but it doesn't appear to be accurate nor does it clarify what is going on for "understanding" sake as I tried to solve it for myself using the method there and it was more confusing than helpful. So, I am asking it an effort to gain a deeper and more accurate understanding.

Which is the best HPLC mobile phase solvent to use if the analytes absorb in the UV region of 210 nm? Briefly describe two other mobile phase characteristics that should be considered in HPLC analysis. List two conditions that may cause the HPLC pump pressure to become excessively high and how to resolve it without damaging the pump.

How many ml of both 75% and 5% stock must be combined to prepare 16 ounces of a 25% product?

Answer: [a] ml of 75% stock (#ml) Round to the nearest whole number

Answer: [b] ml of 5% stock (#ml)  Round to the nearest whole number

Consider the following equilibrium: Fe(OH)₃(s) D Fe³⁺(aq) + 3OH^–(aq) with K_sp = 1.6 x 10^-39. The activity coefficients for Fe³⁺(aq) and 3OH^–(aq) are 0.445 and 0.900 in a solution with an ionic strength of 0.01M. The pH of the solution was 11.

a. Calculate [OH^–] in the solution.

b. Use the activity coefficients in order to calculate [Fe³⁺] in the solution.

The initial rate of the reaction of species A and B A + 2 B → C was measured at a temperature of 25 °C for various initial concentrations of A and B. Data are collected in the table. Determine the rate equation from these data. What is the overall order of the reaction? What is the value of the rate constant? (Give the appropriate units of k.)