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3 years ago

If two parents with the genotypes bb and BB have children, what percentage of their children will have bushy eyebrows (dominant)

Chemistry

1 answer:

Leviafan [203]3 years ago

5 0

We should set our possible combinations to determine the phenotypes.

BB= bushy eyebrows
Bb= bushy eyebrows
bb= no bushy eyebrows

BB x bb

According to the <span>Punnett </span>square that I attached as a pic. There is a 100 percent of all their children to have bushy eyebrows since all will be Bb

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Predict the products (if any) that will be formed by the reaction below. If no reaction occurs, write NR after the reaction arro

disa [49]

Answer:

The product is aqueous $CO(HCl)_2$ and $O_2(g)$ .

Explanation:

Given:

⇒ $2HClO_4(aq) +CO(s)$

then,

The reaction will be:

⇒ $2HClO_4(aq)+CO(s) \rightarrow CO(HCl)_2 +O_2 (g)$

In the above reaction, we can see that

The products is:

aqueous $CO(HCl)_2$ and $O_2(g)$

Thus the above is the correct answer.

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3 years ago

How can you distinguish between a physical change and a chemical change?

AleksAgata [21]

Answer:

Physical Change

When a substance undergoes a physical change, its composition remains the same despite its molecules being rearranged.
Physical change is a temporary change.
A Physical change affects only physical properties i.e. shape, size, etc.
A physical change involves very little to no absorption of energy.
Some examples of physical change are freezing of water, melting of wax, boiling of water, etc. .
In a physical change, no new substance is formed.
Physical change is easily reversible i.e original substance can be recovered.

Chemical Change

When a substance undergoes a chemical change, its molecular composition is changed entirely. Thus, chemical changes involve the formation of new substances.
.A chemical change is a permanent change.
Chemical change both physical and chemical properties of the substance including its composition
During a chemical reaction, absorption and evolution of energy take place.
A few examples of chemical change are digestion of food, burning of coal, rusting, etc.
A chemical change is always accompanied by one or more new substance(s).
Chemical changes are irreversible i.e. original substance cannot be recovered.

8 0

3 years ago

How many core electrons does argon have?

Artemon [7]

10 core electrons are in argon.

4 0

3 years ago

Is a tree getting struck by lightning a physical or chemical change?

FrozenT [24]

A tree getting struck by lightning, it is an example of a physical change.

It is so because when a tree getting struck by lightning, it encountered a strong force of power but no new substance is formed here. So it is a physical change, if it is a chemical change then a new substance must formed here. So when a tree getting struck by lightning, it is an example of a physical change.

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3 years ago

Identify the factors that govern the speed and direction of a reaction. Check all that apply.

Fiesta28 [93]

Answer: option B and option C

Explanation:

4 0

3 years ago