The elements that compose​ seawater, along with the corresponding​ percents, are shown in the table.   If a sample of seawater contains 60 ​ml, how many ml of hydrogen are in the​ sample?   Seawater Elements

A soft drink contains 54 gg of sugar in 339 gg of H2OH2O.   Part A What is the concentration of sugar in the soft drink in mass percent?         Express your answer in percent to two significant figures.

When answering this problem, report the answer with the appropriate number of significant figures. Enter your answer USING scientific notation. When entering units, use proper abbreviated units with proper capitalization. In this experiment, a series of solutions are prepared by combining multiple components into a single container. One solution prepared contains 5.00 mL of 0.010 molar KI, 10.00 mL of 0.0010 molar Na2S2O3, 15.00 mL of water, 10.00 mL of 0.040 molar KBrO3, and 10.00 mL of 0.10 molar HCl.  What is the concentration of iodide ions in this solution? Answer: ____x10______units

Suppose 0.809 g of barium nitrate is dissolved in 250. mL of a 35.0 m Maqueous solution of ammonium sulfate. Calculate the final molarity of barium cation in the solution. You can assume the volume of the solution doesn't change when the barium nitrate is dissolved in it. Round your answer to 3 significant digits. OM x10

In the spooky chemical storage closet, you pull out a solution that says “2.00 M NaOH”. If you pour out exactly 225 mL of that solution, how many grams of NaOH are dissolved in that amount?

Here is a graph of the molarity of glucose (C6H₁2O6) 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- 0.195 0.10- 0.05- 0 500 1000 1500 seconds 2000 2500 # 3000 X Œ 3

Calculate the molarity of the two solutions. The first solution contains 0.200 mol of NaOH in 2.05 L of solution. molarity: M The second solution contains 15.9 g of NaCl in 643 mL of solution. molarity: M * TOOLS x10

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?

One jar of an oven-cleaning product has a total of 454 g of solution.  If this solution contains 138 g of NaOH, what is the mass percent of NaOH in this solution?   Question options:   30.4%   3.29%   3.04%   32.9%

What is the average?