If the solubility of NaCl at 25 degrees Celsius is 36.2 g/100 g H2O, what mass of NaCl can be dissolved in 200.0 g of H2O?

To find the mass of NaCl that can be dissolved in 200.0 g of H2O, we need to use the solubility information provided.

The solubility of NaCl at 25 degrees Celsius is given as 36.2 g/100 g H2O. This means that for every 100 g of water, 36.2 g of NaCl can be dissolved.

To find the mass of NaCl that can be dissolved in 200.0 g of H2O, we can set up a proportion:

(36.2 g NaCl / 100 g H2O) = (x g NaCl / 200.0 g H2O)

To solve for x (the mass of NaCl), we cross-multiply and divide:

100 g H2O * x g NaCl = 36.2 g NaCl * 200.0 g H2O

x g NaCl = (36.2 g NaCl * 200.0 g H2O) / 100 g H2O

x g NaCl = 7240 g NaCl / 100 g H2O

x g NaCl = 72.40 g NaCl

Therefore, 72.40 g of NaCl can be dissolved in 200.0 g of H2O at 25 degrees Celsius.

To solve this problem, we can use the given solubility of NaCl to calculate the mass of NaCl that can be dissolved in 100 g of water. Then, we can scale that result to find the mass of NaCl that can be dissolved in 200.0 g of water.

The solubility of NaCl is given as 36.2 g/100 g H2O, which means that at 25 degrees Celsius, 36.2 grams of NaCl can dissolve in 100 grams of water.

To find the mass of NaCl that can be dissolved in 200.0 g of water, we need to calculate it proportionally.

Step 1: Calculate the mass of NaCl that can dissolve in 100 g of water.
36.2 g NaCl / 100 g H2O = x g NaCl / 100 g H2O
Cross-multiplying,
x = (36.2 g NaCl / 100 g H2O) * 100 g H2O
x = 36.2 g NaCl

Step 2: Scale the result for 200.0 g of water.
Since the solubility is directly proportional to the amount of water, we can set up a proportion using the mass of NaCl calculated in step 1.
36.2 g NaCl / 100 g H2O = y g NaCl / 200.0 g H2O
Cross-multiplying,
y = (36.2 g NaCl / 100 g H2O) * 200.0 g H2O
y ≈ 72.4 g NaCl

Therefore, approximately 72.4 grams of NaCl can be dissolved in 200.0 grams of water.

Hmmmm. What is 2*36.2g?

a supersaturated soultion