3 years ago

Compare dominant and recessive traits

1 answer:

3 0

Dominant genes are those that will overpower recessive genes. For example, if someone has a dominant "brown eye color" gene and a recessive "blue eye color" gene, this person will have brown eyes. The only way someone will have blue eyes is if they have two recessive genes, in which there is no dominant gene to overpower them.

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A cylinder with a moving piston expands from an initial volume of 0.350 L against an external pressure of 1.90 atm. The expansio

myrzilka [38]

Answer:

1.84 L

Explanation:

Using the equation for reversible work:

$W = -P*(V_{2} - V_{1})$

Where:

W is the work done (J) = -287 J.

Since the gas did work, therefore W is negative.

P is the pressure in atm = 1.90 atm.

However, work done is in joules and pressure is in atm. We can use the values of universal gas constant as a convenient conversion unit. R = 8.314 J/(mol*K); R = 0.0821 (L*atm)/(mol*K)

Therefore, the conversion unit is 0.0821/8.314 = 0.00987 (L*atm)/J

$V_{1}$ is the initial volume = 0.350 L

$V_{2}$ is the final volume = ?

Thus:

(-287 J)*0.00987 (L*atm)/J = -1.9 atm*( $V_{2}$ - 0.350) L

$V_{2}$ = [(287*0.00987)+(1.9*0.350)]/1.9 = (2.833+0.665)/1.9 =1.84 L

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4 years ago

What is the difference between atomic mass and molar mass?

sweet-ann [11.9K]

Atomic mass is the mass of a chemical element expressed in atomic mass units. Molar mass the mass of a given substance divided by its amount of substance in (mol) .

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How are molecules built?

RoseWind [281]

Bonding I'm guessing

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3 years ago

How does a tree get energy?

Snezhnost [94]

Your answer is B. It gets energy from the Sun.
Have a great day :)

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