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4 years ago

1. Which statement is accurate?

Chemistry

1 answer:

valkas [14]4 years ago

8 0

1. Answer:

B) An allele is one form of a gene.

Explanation:

<em><u>An allele refers to an alternative form of a gene. In other words it is one of the form of a gene.</u></em>
<em><u>A gene may have two alleles, where one of the allele is a dominant allele and the other is a recessive allele. </u></em>
A homozygous organisms may be dominant or recessive, a homozygous recessive contains two recessive alleles while a homozygous dominant contains two dominant alleles.
A heterozygous organisms contain one dominant allele and one recessive allele.

2. Answer;

B) Alleles

Explanation;

<em><u>According to Mendel genes are inherited in pairs of alleles that behave in a dominant and recessive pattern. </u></em>
<em><u>Alleles are alternative forms of a gene. </u></em>

A gene may have two alleles, where one of the allele is a dominant allele and the other is a recessive allele.
A homozygous organisms may be dominant or recessive, a homozygous recessive contains two recessive alleles while a homozygous dominant contains two dominant alleles.

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What would the pOH of a solution be if the pH is 9.4

Alika [10]

<h2>Answer:</h2>

pOH = 4.6

<h2>Explanations:</h2>

The sum of pH and pOH of a solution is 14as shown:

$pH+pOH=14$

Given the following parameter

pH = 9.4

Substitute the given parameters into the formula to have:

$\begin{gathered} 9.4+pOH=14 \\ pOH=14-9.4 \\ pOH=4.6 \end{gathered}$

Hence the pOH of the solution of pH of 9.4 is 4.6

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2 years ago

Ionic compounds conduct electricity in the solid state true or false

antoniya [11.8K]

<h3>Answer: False</h3>

In solid form, ionic compounds do not conduct electricity. Ionic compounds will conduct electricity when melted to their liquid state. This is due to the electrons being locked in place when in solid form, but liquid form allows for the electrons to move freely.

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3 years ago

A chemist carefully measures the amount of heat needed to raise the temperature of a 894.0g sample of a pure substance from to −

astraxan [27]

Answer:

C = 0.2349 J/ (g °C)

Explanation:

Mass, m = 894.0g

Initial Temperature = −5.8°C

Final Temperature = 17.5°C

Temperature change = 17.5°C - (−5.8°C) = 23.3

Heat, H = 4.90kJ = 4900 J

Specific heat capacit, C = ?

The relationship between these quantities is given by the equation;

H = mCΔT

C = H / mΔT

C = 4900 / (894)(23.3)

C = 0.2349 J/ (g °C)

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3 years ago

Does taking away an electron change the position on the periodic table?

mafiozo [28]

Answer:

Basically no it doesnt it stays the same it just means your adding more onto the atomic number and it keeps position

As the atomic number increases along a row of the periodic table, additional electrons are added to the same, outermost shell. The radius of this shell gradually contracts as the attraction between the additional electrons and the nucleus increases.

Explanation:

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3 years ago

Describe at least two ways that a researcher can minimize experimental errors in an investigation.

Leto [7]

Experimental errors can be of two kinds: human error and analytical error. Analytical error can be corrected easily. You just have to use instruments that are of high precision. For example, instead of using the platform balance, use the analytical balance which displays 4 decimal places to be highly accurate. For the human error, this is subjective. The only way to correct human error is to be more meticulous on your data measurements.

8 0

3 years ago