Table 4:Reactions and Reaction Stoichiometry Show calculations separately. HCl + NAOH → HC,H,O, + NaOH→ moles of water from the reaction with HCl AHHq Rxn (kJ/mol) moles of water from the reaction with HC,H,O, AH HC,H,O, Rxn (kJ/mol) -

A sample of freshly precipitated and filtered silver chloride weighs 459.0 mg. If 1.00% of the silver chloride becomes photodecomposed and converted to solid silver metal, what will the precipitate weigh? Write on the space provided for your answer only the number with the correct number of significant figures.

What is the percent by mass NaCl of a solution that contains 85.7 grams of NaCl and 104.1 grams of water? Round your answer to 1 decimal.

Please don't provide hsndwritten solution .....

If a water sample has 0.07 mol of calcium ions in 15 L solution, what is the water hardness level in mg/L? Pay attention to the unit. Hint: For the calcium mass , convert mol to g to mg. (1 mol calcium ion= 40.08 g/mol and 1 g = 1000 mg) Round and report your answer to an integer without decimal place. Report numeric value only, no unit. • Water hardness levels according to EPA Soft: 0-60 milligrams per liter (mg/L) as calcium carbonate Moderately hard: 61-120 mg/L as calcium carbonate • Hard: 121-180 mg/L as calcium carbonate Very hard: more than 180 mg/L as calcium carbonate

You have a 0.561 M solution of magnesium chloride. You pour out 389.8 mL of this solution. How many grams magnesium chloride is in that 0.561 mL of solution? Put answer in box in regular non scientific notation with one past decimal.

What is -30°F in K? O 30K ЗОК O 303 K О-30 К 0239 К 04K

The chemical formula for cesium chloride is CsCl . A chemist measured the amount of cesium chloride produced during an experiment. She finds that 9.25 g  of cesium chloride is produced. Calculate the number of moles of cesium chloride produced.   Round your answer to 3  significant digits.

One of the Ionic compounds in sports drinks is potassium di hydrogen phosphate. The label on one of these sports drinks tells us that 240 mL of the solution contains 30 mg of potassium. KH2PO4 is the only ingredient that can provide potassium. how many grams of KH2PO4 are dissolved in 240 mL of the solution? What is the molars ty of KH2PO4 in this solution? Organize abs label your calculations so that they are presented in a logical manner for full credit

Magnesium will burn in air to form both Mg3N2 and MgO. What mass of each product would be found if burning a 3.29 g sample of magnesium to completion produces a combined total of 5.09 g of the two products?