Here is a graph of the molarity of arsenic acid (H₂ASO4) in a reaction vessel during a certain chemical reaction. Use this graph to answer the questions in the table below. M 0.30- 0.25+ 0.218 0.20- 0.15- 0.10- 0.05- 0 500 1000 1500 seconds TH 2000 2500 3000 X

An aqueous solution at 25 °C has a H₂O concentration of 6.2 × 10¯M. Calculate the OH concentration. Be sure your answer has the correct number of significant digits. -7 1.61 × 10 M x10 X Ś

If 2.0 × 10-4 moles of  H2O2H2O2 in 50 mL solution is consumed in 3 minutes and   25  seconds, what is the rate of consumption of H2O2H2O2?  Express the rate in mol per liter·second to two significant digits.

A student wants to make a 0.600 M aqueous solution of barium sulfate, BaSO4, and has a bottle containing 12.00 g of barium sulfate. What should be the final volume of the solution?   Find the numerical answer for this question and make sure to include the following: What is the formula for molarity? What is the molar mass for barium sulfate? When you give your numerical answer, what are the correct significant figures and how do you know that is the correct amount?

A chemistry student must write down in her lab notebook the concentration of a solution of sodium thiosulfate. The concentration of a solution equals the mass of what's dissolved divided by the total volume of the solution. Here's how the student prepared the solution: • The label on the graduated cylinder says: empty weight: 5.0 g She put some solid sodium thiosulfate into the graduated cylinder and weighed it. With the sodium thiosulfate added, the cylinder weighed 61.167 g. • She added water to the graduated cylinder and dissolved the sodium thiosulfate completely. Then she read the total volume of the solution from the markings on the graduated cylinder. The total volume of the solution was 10.64 mL. What concentration should the student write down in her lab notebook? Be sure your answer has the correct number of significant digits. - 1 g•mL х10

com/alekscgi/x/Isl.exe/1o_u-IgNslkr/J8P3JH-IBEWe Maps O MEASUREMENT Lindsay Adding or subtracting and multiplying or dividing measurements chemistry student must write down in her lab notebook the concentration of a solution of sodium hydroxide. The concentration of a solution equals the mass what's dissolved divided by the total volume of the solution. re's how the student prepared the solution: • The label on the graduated cylinder says: empty weight: 6.050 g dlo - She put some solid sodium hydroxide into the graduated cylinder and weighed it. With the sodium hydroxide added, the cylinder weighed 96.4 g. - She added water to the graduated cylinder and dissolved the sodium hydroxide completely. Then she read the total volume of the solution from the markings on the graduated cylinder. The total volume of the solution was 151.66 mL. Ar at concentration should the student write down in her lab notebook? Be sure your answer has the correct number of significant digits. -1 gmL