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3 years ago

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Which energy changes are associated with a liquid freezing? Energy is released as potential energy increases. Energy is absorbed

as potential energy increases. Energy is released as potential energy decreases. Energy is absorbed as potential energy decreases.

1 answer:

Tems11 [23]3 years ago

3 0

Energy is released as potential energy decreases (c) is the the answer

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1. MnO₂ is an example of what type of bond?

Elanso [62]

Answer:

1. covalent

2. polyatomic ion

Explanation:

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2 years ago

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Two of the seven different pea traits examined by Mendel involved genes that we now know are linked. Knowing this, can you expla

ser-zykov [4K]

Answer:: Mendel studied how traits are been passed from parents to offspring using seven features in peas, including height, flower color, seed color, and seed shape. To do this he divided the pea plant into short height and tall height. From this experiment he proposed a principle called independent assortment, which describes how different genes independently separate from one another when reproductive cells develop. Though this experiment was studied using gene formation in prokaryotic cell.

This principle of independent assortment is also seen in eukaryotic cells during meiosis.

Mendel proposed this principle because during cell formation of the offspring, each individual Gene from the parents will first separate to stand on its own before cross linking up together, which made the offspring look different from the parents. The principle of independent assortment does not criticize gene linkage, it only highlight how gene in the garments of the parents forms offspring, by sperating to assort independently.

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3 years ago

Balance this chemical equation. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coeffici

larisa86 [58]

The first one have a nice day and good luck

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2 years ago

Nearly all the energy from the earth receives from the sun is used in photosynthesis

dezoksy [38]

Answer: It is false because we use alot of it to with solar power.

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3 years ago

Nault 25000L 250 our = 25000L 15040 8. How many grams of CaCl2 are needed to make 150.0 mL of a 0.500 M CF solution? (Note: CaCl

yuradex [85]

Answer:

You need 8,324 g of CaCl₂ yo make this solution

Explanation:

Molarity is a way to express concentration in a solution, in units of moles of solute per liter of solution.

To know the grams of CaCl₂ it is necessary to know, first, the moles of this substance with the desired volume and concentration , thus:

0,1500 L × $\frac{0,500 mol}{L}$ = 0,075 CaCl₂ moles

Now, with the molar mass of CaCl₂ you will obtain the necessary grams, thus:

0,075 CaCl₂ moles × $\frac{110,98 g}{mol}$ = 8,324 g of CaCl₂

So, you need <em>8,324 g of CaCl₂</em> to make 150,0 mL of a 0,500M solution

I hope it helps!

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3 years ago