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aalyn [17]
2 years ago
8

Using the curve which letter represents efficiency?

Chemistry
1 answer:
velikii [3]2 years ago
4 0

Answer:

point A , B and C

Explanation:

The efficient frontier is the set of optimal portfolios that offer the highest expected return for a defined level of risk or the lowest risk for a given level of expected return

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A group of students are measuring how the acceleration of a mass will change due to a force.
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The graph of the plot of acceleration against force is a straight line graph. Option B

<h3>What is the relationship between force and acceleration?</h3>

From the Newton's second law of motion we can derive that; F = ma

F= mass

a = acceleration.

This implies that the acceleration and the mass of a body has a linear relationship. We could then assert that the force is directly proportional to the acceleration with the mass being the constant in the equation.

As such, the force that is imparted to the body is what determines the acceleration and the both increases or decreases linearly. Thus the graph of the plot of acceleration against force is a straight line graph. Option B

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1 year ago
When 2-phenylacetaldehyde is added dropwise to benzaldehyde in the presence of sodium hydroxide they undergo a crossed aldol rea
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7 0
3 years ago
Describe porosity and how that affects groundwater infiltration.
algol13
It’s the measure of spaces between objects. It affects groundwater infiltration by having more water fill the spaces between it. For example, is you have bigger rocks the spaces between it are bigger therefore the groundwater infiltration rate is faster. If the rocks are smaller, they are tightly packed and it’s not easy for groundwater infiltration.
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2 years ago
When weather starts to average out in a pattern over many years, like 30 years, scientists can calculate the average weather con
meriva

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the earth is different in all places

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6 0
2 years ago
You begin pouring sodium chloride into a glass of water. For a long time, the sodium chloride just dissolves in the water, but s
Gennadij [26K]

Answer:

  • Option D:<u><em> The water is saturated</em></u>

Explanation:

Solubility is the term used to designate the maximum amount of a solute that can be dissolved in a given amount of solvent, at a given temperature and pressure.

At start, you begin with pure water in the glass. This water is a pure substance, not a solution.

When <em>you begin pouring sodium chloride into the glass of water,</em> a solution, i.e. a homogenous mixture of solute and solvent, is formed.

This solution, at first, is diuted, which means that it contanins just few grams (matter) of the solute dissolved.

As, more sodium chloride is dissolved, the solution becomes more concentrated but is unsaturated. At some point, the water cannot dissolve more sodium chloride, because it has reached the maximum amount that can contain at that temperature and pressure. Then, the solution is saturated.

You can tell that the water is saturated, ie it contaiins the maximum amount of sodium chloride that can be dissolved, by that amount of water, at the given temperature, because from that point, you will note that <em>as you pour more sodium chloride, it begins to pile up at the bottom of the glass</em>. Hence, the true statement is the letter D: <u><em>the water is saturated.</em></u>

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