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2 years ago

Select all of the following that are recessive alleles.

Chemistry

1 answer:

const2013 [10]2 years ago

8 0

All of the lower case letters are recessive

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1. A 5.04 mL sample of Cu has a mass of 45 grams. What is the density of Cu? Show units in final answer

babunello [35]

I think the answer is number D…. I think

4 0

2 years ago

Which best explains the importance of indicator species?

Contact [7]

Answer:

Explanation:

ndicator species (IS) are animals, plants, or microorganism used to monitor changes in our environment. For example, they can tell us about the impact of pollution on an ecosystem, or how well an impaired environment is being managed or restored.

5 0

2 years ago

When the pH of a solution changes from a pH of 5 to a pH of 3, the hydronium ion concentration is

gizmo_the_mogwai [7]

Answer : The correct option is, (D) 100 times the original content.

Explanation :

As we are given the pH of the solution change. Now we have to calculate the ratio of the hydronium ion concentration at pH = 5 and pH = 3

As we know that,

$pH=-\log [H_3O^+]$

The hydronium ion concentration at pH = 5.

$5=-\log [H_3O^+]$

$[H_3O^+]=1\times 10^{-5}M$ ..............(1)

The hydronium ion concentration at pH = 3.

$3=-\log [H_3O^+]$

$[H_3O^+]=1\times 10^{-3}M$ ................(2)

By dividing the equation 1 and 2 we get the ratio of the hydronium ion concentration.

$\frac{[H_3O^+]_{original}}{[H_3O^+]_{final}}=\frac{1\times 10^{-5}}{1\times 10^{-3}}=\frac{1}{100}$

$100\times [H_3O^+]_{original}=[H_3O^+]_{final}$

From this we conclude that when the pH of a solution changes from a pH of 5 to a pH of 3, the hydronium ion concentration is 100 times the original content.

Hence, the correct option is, (D) 100 times the original content.

7 0

3 years ago

Read 2 more answers

Select the ion.<br><br>1)Cu<br>2)PO4-3<br>3)SO2

Lilit [14]

I believe the answer is B. PO4-3

6 0

3 years ago

Read 2 more answers

What is the coefficient for hydrogen in the balanced equation for the reaction of solid molybdenum(iv) oxide with gaseous hydrog

anastassius [24]