What is the percent by mass of sodium chloride in a solution of 44G of NaCl dissolved in 756GH2O

Hey there!

First find the total mass of the solution.

756 + 44 = 800 grams

Then, find the percent that 44 grams is of 800 grams.

44 ÷ 800 = 0.055

0.055 x 100 = 5.5%

The percent of the solution that is NaCl is 5.5%.

Hope this helps!

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).