Calculate the mass in grams of nacl that is present in 500.0 ml of a 0.900% (m/v) solution.

4.5 grams of NaCl

Explanation:

A concentration of 0.900% (m/V) means that there are 0.9 grams of solute (in this case NaCl, that is, the substance that has been dissolved in another substance, making the solution) in 100 ml of solution. Then, the following proportion applies:

(0.9 grams of NaCl)/(100 ml of solution) = (x grams of NaCl)/(500 ml of solution)  

(0.9/100)*500 = x

4.5 grams of NaCl = x

atomic number of carbon is 6

electronic configuration of carbon is 1s²2s²2p²

orbital diagram of c is as shown here in the image.

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.