Density of a saltwater solution?
I understand a 25% by weight solution to be one that contains 25kg of salt per 100kg solution. This is 25kg salt plus 75 kg water. This is 1kg salt per 3kg solution. Also, as I understand it the density would only be of importance in a 25W/V solution. But as the question deals only with a weight solution, the density plays no part. Sorry I am unable (and somewhat too lazy) to go to the complexity of a lb/cu ft calculation. Edit: OK I've come back the next day ready to delve into the complexities of lb/cu ft. I have managed to find out that there are 62.427 lbs of water/cu ft . Now the density plays a role, the above is for plain water, density = 1g/cm³. Because the sea water has a density of 1.20g/cm³, The mass of a cubic foot of sea water will be 74.912lb. At a 25% weight solution, the cubic foot of water will contain 25/100*74.912 = 18.728lb of salt.
How to find density of this salt water solution?
Note I am going to use random numbers* So the weight of my EMPTY 250mL beaker let's say was 90g I fill it up with 150mL of water then I add salt to the water and my solution now weighs 140mL so how can I find the density of the salt water solution using just that information? I know d=m/v but does the weight of an empty beaker has to do with anything?
Calculate density of salt water solution?
No. You'd do (300+49.701)/300. Density is mass per unit volume. Edit: Don't listen to the guy under me. He doesn't know what he's talking about. First of all density is almost never measured in g/L it's usually either in g/mL or kg/L which are equal to each other. Second of all dividing the mass of the salt by the volume of the solute will not give you the density of the solution. To find the density of the solution you have to find mass of the solution and divide it by volume of the solution.
How can we increase the density of water rather than adding salt?
The purity of anything is defined by its various properties like density, melting point, boiling point etc. So if you want to have pure water with a density higher than the usual then you might as well as this question to god lol. Pure water will not have a density higher than 1g/cc because that is what is its nature. But if you wish to have water with some impurities in it that can help in increasing the density then you might as well add PVA in it, PVA = polyvinyl alcohol.I hope this helped ,Thanks
How do I answer this question about water and salt water densities?
I'm doind a Q&A for science questions and this question stumped me. I don't know how to go about answering it. Should I find the density of water and salt water? This is the question: The Dead Sea is a body of water that lies between Israel and Jordan. It is so salty that almost no organisms other than a few types of bacteria can survive in it. The density of its surface water is 1.166 g/ml. Would you find it easier to float in the Dead Sea or in a freshwater lake? Give a reason for your answer.
How can we calculate the density of water?
Use the definition of density= weight/volume. Surely, you have an accurate volume measurement, such as a pipette which can transfer a given volume to a beaker which has been weighed w/o water. Now weight it after the water has been added. TA-DA. (PS. report the temperature, there is a slight dependency of density with temperature. Your experiment probably won't pick it up, but it makes you look smarter. )
Which have more density, salt water or oil?
Since water is generally less dense than oil, and salt dissolved in it will only increase the density (sea water is more dense than fresh), it makes sense that salt water will be less dense than oil.
An egg sinks in fresh water but floats in a strong salt solution. Why?
An item will float when it has a lower density than the fluid in which it is placed, due to a phenomenon known as the buoyant force. This is why a Helium balloon floats in a room full of air, as the Helium+Rubber system is of low enough density to float in air. This is also why a beach ball will float in water, as the density of plastic + air is less than that of the water.In the case of the egg, it contains mostly fresh water, along with some proteins that are denser than water, and some lipids that are less dense than water. As you add increasingly greater amounts of salt to the same volume of water, since the salt dissolves, you are increasing the mass of the liquid. Since the volume does not increase by the same amount, you end up increasing the density of the water as well. As soon as the density of the water is greater than that of the egg, the egg will start to rise. Even more interesting, you could get the egg to float in the brine, then pour in cooking oil. The oil is less dens than water, so it will float on the water, and the egg will float on the water, but be submerged in the oil.If the salt water were not well mixed, you could even use the egg as a makeshift measurement device to test where the higher salinity water begins, since it will tend to sink in until it hits the heavily salted portion.
How do you calculate the density of water?
192.3 g ------------ = 0.9615 g/mL * Rounds up to 1g/mL.* 200 mL Here is the density triangle. D= Density. M= Mass. V= Volume. You cover up what you need and the triangle shows you the formula to use. So you cover up the D. Then, you divide mass by volume. http://room34pstext.wikispaces.com/file/view/Density_Triangle.jpg/31442569
Why does adding salt to water increase its density?
This indeed is an obvious fact because mixing two compounds you need to count on significant increase in mass but a small change in total volume due to favorable “polar” interactions between water molecules and salt ions. As a result density of the salt solution becomes higher than density of pure liquid water. There might also be deviation from the ideal (or linear )behavior where the calculated density is less than the measured one especially at high salt concentrations. This deviation could be attributed to the fact that dissolved salt ions distort tetrahedral units and hydrogen bonding network in liquid water leading to more dense packing of water molecules plus the dissolved salt ions in the medium.