how many grams of Nacl are needed to make 300ml of a 2% solution
a)2grams
b)4grams
c)6grams
d)20grams
Answers
Answer:
(a) is your answer
Please mark as brainlist
Answer:
Concept :
The chemical formula for sodium chloride, or NaCl, indicates that the sodium and chloride ions are present in a 1:1 ratio in this substance. 100 g of NaCl include respectively 39.34 g Na and 60.66 g Cl, with molar weights of 22.99 and 35.45 g/mol. Seawater and the extracellular fluid of many multicellular creatures both contain a high concentration of sodium chloride, which is the salt that contributes most to these salinities. It is frequently used as a condiment and food preservative in its edible form, which is table salt. A significant source of the salt and chlorine molecules utilised as feedstocks for further chemical synthesis, sodium chloride is employed in significant amounts in numerous industrial processes. De-icing roads during temperatures below freezing is a second important use of sodium chloride.
Explanation:
Given :
300ml
2% solution
To get the mass we just need to multiply the volume and the 2% (w/V)
2% in decimal is 0.02
So,
w/V=0.02
We are given that the volume is 300 ml so
w=0.02*300ml
w=6g NaCL
The answer is 6 grams.
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