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2 years ago

11

If a man with long eyelashes (LL) marries a woman with long eyelashes (Ll), what are the possible genotypes and phenotypes of th

eir children?

1 answer:

pochemuha2 years ago

8 0

Answer:

Long eyelashes

Explanation:

it would be long eyelashes unless somewhere in the family tree has short eyelashes.

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In which of the following sets is the symbol of the element, the number of protons, and the number of electrons given correctly?

sveta [45]

Answer:

A.

Explanation:

The number of the them will result in A.

7 0

2 years ago

Atoms that have a positive or negative electrical charge are called ________.

hjlf

Explanation:

They are called or known as cations

4 0

3 years ago

A 0.15 m solution of chloroacetic acid has a ph of 1.86. What is the value of ka for this acid?

dem82 [27]

Answer: $1.67\times 10^{-3}$

Explanation:

$ClCH_2COOH\rightarrow ClCH_2COO^-+H^+$

cM 0 0

$c-c\alpha$ $c\alpha$ $c\alpha$

So dissociation constant will be:

$K_a=\frac{(c\alpha)^{2}}{c-c\alpha}$

Given: c = 0.15 M

pH = 1.86

$K_a$ = ?

Putting in the values we get:

Also $pH=-log[H^+]$

$1.86=-log[H^+]$

$[H^+]=0.01$

$[H^+]=c\times \alpha$

$0.01=0.15\times \alpha$

$\alpha=0.06$

As $[H^+]=[ClCH_2COO^-]=0.01$

$K_a=\frac{(0.01)^2}{(0.15-0.15\times 0.06)}$

$K_a=1.67\times 10^{-3]$

Thus the vale of $K_a$ for the acid is $1.67\times 10^{-3}$

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3 years ago

Would a pure substance ever settle out and form two distinct layers? Explain your reasoning.

garik1379 [7]

Answer:

No, the only way they can be separated is through chemical methods. ... A compound is made up of two or more elements that are chemically combined and elements are combined to form a compound.

Explanation:

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3 years ago

HOW FAST CAN YOU ANSWER

Alex777 [14]

Answer:

option "B" is correct (substance 2)

5 0

3 years ago