grams of sodium chloride dissolved in 100mL of water at 20 degrees celcius

And your question is? Note the correct spelling of celsius.

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To calculate the grams of sodium chloride dissolved in 100mL of water at 20 degrees Celsius, we need to know the solubility of sodium chloride at that temperature.

The solubility of sodium chloride in water is commonly measured in grams of solute per 100 grams of water (g/100g) or grams of solute per liter of water (g/L) at a specific temperature.

I will assume you are looking for the solubility in grams of sodium chloride per 100mL of water at 20 degrees Celsius. To find this information, we need to refer to a solubility table or use a reliable source.

Let's take a look at a solubility table for sodium chloride at different temperatures:

Temperature (°C) Solubility (g NaCl/100g H₂O)
-----------------------------------------------
10 35.7
20 35.9
30 36.2
40 36.5
...

From the table, we can see that at 20 degrees Celsius, the solubility of sodium chloride is approximately 35.9 g/100g of water.

Now, we can calculate the grams of sodium chloride dissolved in 100mL of water at 20 degrees Celsius. Since the solubility is given in grams per 100 grams of water, we can use the following equation:

grams of sodium chloride = (solubility in g/100g) * (mass of water in grams)

Since you have 100 mL of water, we need to convert this to grams (assuming the density of water is 1g/mL). The mass of 100 mL of water is:

mass of water = volume * density = 100 mL * 1 g/mL = 100 grams

Now we can plug in the values into the equation:

grams of sodium chloride = (35.9 g/100g) * (100 grams)

grams of sodium chloride = 35.9 grams

Therefore, at 20 degrees Celsius, approximately 35.9 grams of sodium chloride can dissolve in 100mL of water.