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What is the molality of a solution that has 70g of NaCl dissolved in 300g of water?
Molality(m)= moles of solute divided by kilograms(kg) of solvent
you need to find the moles of NaCl by using a conversion factor
70g NaCl = 1mol divided by 58.44g NaCl
=1.20mol
then you need to convert 300g of water which is the solvent to kilograms by moving the decimal over 3 units to the left which makes .300 kg of solvent
Molality= 1.20mol divided by .300kg
Molality=4.00
What else can I help you with?
What is the change in the freezing point of water when 35g of sucrose is dissolved in 300g of water?
To determine the change in the freezing point of water when 35g of sucrose is dissolved in 300g of water, we can use the freezing point depression formula: ΔTf = i * Kf * m, where i is the van 't Hoff factor (1 for sucrose), Kf is the freezing point depression constant for water (1.86 °C kg/mol), and m is the molality of the solution. First, calculate the number of moles of sucrose: ( \text{moles} = \frac{35g}{342.3 g/mol} \approx 0.102 moles ). The mass of the solvent (water) in kg is 0.3 kg, so the molality ( m = \frac{0.102 moles}{0.3 kg} \approx 0.34 , mol/kg ). Thus, the change in freezing point is ( ΔTf = 1 * 1.86 °C kg/mol * 0.34 , mol/kg \approx 0.63 °C ). Therefore, the freezing point of the solution will decrease by approximately 0.63 °C.
What is the approximate molar mass of a molecular solute if 300 g of the solute in 1000 g of water causes the solution to have a boiling point of 101C?
The change in boiling point can be used to calculate the molality of the solution. Using that molality value, you can then calculate the moles of the solute in 300g. Finally, dividing the mass by the moles gives the molar mass, which is approximately 150 g/mol.
Where is the tavern in harvest moon ds?
Water-0G Morning Mist-400G Spring Time-400G Summer Heat-300G Fall Colors-300G Winter Blast-350G Fresh Breeze-300G Bodiaid-250G ABC-350G Moomoo Milk-300G
300g to cup?
300 grams of water is 1.323 cups.
How do you make eusol solution?
To make Eusol solution, dissolve 300g of sodium chloride (table salt) and 20g of calcium hypochlorite (bleaching powder) in 10 liters of water. Mix well until all the ingredients are fully dissolved. Eusol solution is commonly used as an antiseptic for wound care.
Which is heavier 300g or 1kg?
1kg=2.2lb 300g=10.6oz answer 1kg
How do you prepare 30 percent of NaOH?
To prepare a 30% NaOH solution, you would mix 30 grams of NaOH with enough water to make 100 grams of final solution. Be sure to use caution when handling NaOH as it is a caustic substance and can cause skin and eye irritation.
How many cups in 300g flour?
300g=300mL; 1c = 236.6mL 300g = 1.27c
What is the density of 25.2 ml of a solution with a mass of 300 g?
density = mass / volume => 300g / 25.2ml ~= 11.9 g/ml
How many times is 300g contained in 12kg?
300g is 0.3 kg, so 12 kg contains 40 times 300g.
How many kg in 2 kg 300 g?
4kg 300g=4kg+300g=4000g+300g=4300g
How much is 300g in deciliter?
300 grams of granulated sugar = 352.94 ml = 3.5294 dl[1]
