Magnesium (mg) is a valuable metal used in alloys, in batteries, and in the manufacture of chemicals. it is obtained mostly from seawater, which contains about 1.30 g of mg for every kilogram of seawater. calculate the volume of seawater (in liters) needed to extract 5.33 × 104 tons of mg. seawater has a density of 1.03 g/ml. (1 ton = 2000 lb; 1 lb = 453.6 g) enter your answer in scientific notation.

Given that, 1.30 g of mg per kg (1000 g) of sea water.

Convert into gram.

1 ton = 2000 lb

Thus,

 =

= =

1 lb = 453.6 g

Thus,

=

= =

Now,

1.30 g of magnesium is present in  1000 g of seawater.

Thus, 1 g of magnesium present in of seawater.

of magnesium present in =  

= of seawater.

Now, density of sea water is

Density is equal to the ratio of mass and volume.

Put the value of density and mass to find the volume:

Volume =

Volume =

Now, convert ml into L:

1 L = 1000 ml

Volume in L =

=

Thus, volume in litres =

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.

sure im new too!

explanation: