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hardness
Number of moles = Mass of the sample in g/Molar mass in g
Yes, because the definition of a solution is a homogenous mixture. Therefore, one part of the solution will have the sample definite properties as the entire solution.
why do stars twinkle
first measure the volume of the sample solution needed to change the blue color of the DCPIP solution into colourless. then, weigh the mass of the sample solution. finally calculate the concentration by using the formula: volume required t change the color of DCPIP solution (dm) per mass of the sample solution (g)
You can prove there is glucose in a sample by using Benedict's Solution. Heat up the sample, and add the Benedict's Solution. Assuming the solution is clear, if glucose is present it will change colour to red, or yellow, or green. If not, it will stay clear.
A Pulley
sample of problem solving
It is a solution.
Both "solution for" and "solution to" can be used, but they are used in slightly different contexts. "Solution for" is used when referring to a specific problem or situation that needs a resolution, while "solution to" is used when indicating the answer or resolution to a problem or situation. For example, "We need to find a solution for the traffic congestion" or "We found a solution to the math problem."
Weigh 10g of the given sample and dissolve it in 100ml of water, it forms a 10% solution of that sample.
A solution is the answer to a problem. For example, in a math problem a solution is this: 5w=25 w= 5