Please help Which of the following is the SI unit used to measure length? a.kilogram b.liter c.meter d.Kelvin
1 answer:
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16.4 grams is the mass of solute in a 500 mL solution of 0.200 M .
sodium phosphate
Explanation:
Given data about sodium phosphate
atomic mass of Na3PO4 = 164 grams/mole
volume of the solution = 500 ml or 0.5 litres
molarity of sodium phosphate solution = 0.200 M
The formula for molarity will be used here to know the mass dissolved in the given volume of the solution:
The formula is
molarity =
putting the values in the equation, we get
molarity x volume = number of moles
0.200 X 0.5= number of moles
number of moles = 0.1 moles
Atomic mass x number of moles = mass
putting the values in the above equation
164 x 0.1 = 16.4 grams
16.4 grams of sodium phosphate is present in 0.5 L of the solution to make a 0.2 M solution.
<h2>Answers to the rest of the assignment:</h2>
**Check for proof photos at the bottom.**
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Identify each of the following mixtures as either homogeneous or heterogeneous and as a solution, a suspension, or a colloid.
Cranberry juice at the store
A. homogeneous
C. solution
Smoke
B. heterogeneous
D. colloid
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Identify each of the following mixtures as either homogeneous or heterogeneous and as a solution, a suspension, or a colloid.
Blood
B. heterogeneous
E. suspension
Salad dressing
B. heterogeneous
E. suspension
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Shown here is a person shaving. Under magnification, the shaving foam might look like the image above the shaver. What type of mixture does the foam demonstrate? Give your reasoning.
Foam is a colloid. Colloids includes gas dispersed in a liquid and it also includes gas dispersed in a solid
On the next slide, you can select any answers you want, or you can select nothing. There's no wrong answer.
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A student squeezes several oranges to make a glass of orange juice. The juice contains pieces of orange pulp mixed with the juice. Explain why this drink can be considered a combination of a suspension and a solution.
The juice contains sugars, plant pigments, and other chemicals dissolved in water. This is a solution. The pieces of orange pulp will rise to the top or settle to the bottom of the juice if it is allowed to sit. The pieces of pulp mixed with the juice form a suspension
On the right side, you can also select any answers or none at all. There is no wrong answer.
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<h2>Explanation:</h2>There are two main types of mixtures, homogeneous mixtures and heterogeneous mixtures. The components of a homogeneous mixture are evenly distributed throughout the mixture. The properties of a mixture are the same everywhere. The components of a heterogeneous mixture are not evenly distributed. Different regions of this mixture have different properties.
Particles in a homogeneous mixture do not settle down or separate when left alone. Particles in a heterogeneous mixture eventually separate or settle when left alone.
- Colloids are a type of heterogeneous mixture that do not naturally settle out quickly, and can be separated with different methods.
- A suspension is another type of heterogeneous mixtures in which the components of the mixture will quickly settle out or can be filtered or separated.
Here are photos of Edge just incase.