we are having a ice cream industry

we are using calcium cloride to get -35 degree
now we are getting -25 degree density of liquid is 1.210
how many kilo grams of calcium cloride to mix in liquid to get the density of 1.300
the liquid is nearly 3000 liters

Try:

http://www.newton.dep.anl.gov/askasci/chem03/chem03988.htm

To calculate the amount of calcium chloride needed to achieve the desired density, we can use the equation:

Density = (mass of calcium chloride + mass of liquid) / total volume

Given that the initial density is 1.210 and the desired density is 1.300, we can set up the equation as follows:

1.210 = (mass of calcium chloride + mass of liquid) / 3000

Simplifying further, we get:

Mass of calcium chloride + mass of liquid = 1.210 * 3000

To solve for the mass of calcium chloride, we need to subtract the mass of the liquid from the right side of the equation:

Mass of calcium chloride = (1.210 * 3000) - mass of liquid

However, we still need to determine the mass of the liquid. To do this, we'll use the given density of -25 degrees Celsius, which is the initial temperature. The density of a liquid can be calculated as:

Density = Mass / Volume

Given that the density is 1.210 and the volume is 3000 liters, we can solve for the mass of the liquid:

Mass of liquid = Density * Volume

Mass of liquid = 1.210 * 3000

Now we can substitute this value back into the equation to calculate the mass of calcium chloride:

Mass of calcium chloride = (1.210 * 3000) - (1.210 * 3000)

Finally, we can simplify the equation to determine the mass of calcium chloride needed to achieve the desired density of 1.300.