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3 years ago

Can u plz give an answer to me thank you

Chemistry

1 answer:

vagabundo [1.1K]3 years ago

4 0

The puppies have different colored noses because of reccesive and dominant genotypes.

Genotypes are represented by letters, capital being dominant and lowercase being recessive.

For example, lets say t = pink nose and T = black nose.

If the parents have black noses, then they will pass on T genotypes.

But, they also have hidden pink nose genotypes.

These hidden genotypes are passed on to the puppies, one of the puppies gets more black nose genotypes.

If a puppy gets tt, they will have a pink nose.

If they get TT, they will have a black nose

If they get Tt, they will also have a black nose.

Because the black nose is dominant, its more likley for the puppies to end up with a black nose.

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How many moles of carbon dioxide should be produced from the decomposition of 0.100 g of sodium bicarbonate?

Gre4nikov [31]

The chemical symbol for sodium bicarbonate is NaHCO3. Its molar mass is 84 g/mol. In each of one mol of sodium bicarbonate their is one mole of carbon dioxide with the molar mass of 44 grams per mol. We determine the number of moles in 0.10 g of sodium bicarbonate.
n sodium bicarbonate = (0.10 g) / (84 grams / mol)
= 1.19 x 10-3 moles sodium bicarbonate
Therefore, there are also 1.19 x 10-3 moles of carbon dioxide.

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3 years ago

What is the pH of a solution of KOH with a hydroxide concentration of [OH⁻] = 1.10 x 10⁻⁴

olga2289 [7]

Answer:

$p[H+] = 10.042$

Explanation:

As we know that

$pKw = pH + pOH$ ......eq (1)

we will calculate the pH of OH- and then we will calculate the pH of H+

So p[OH-] $= - log [1.10 * 10^{-4}]$

Solving the right side of the equation, we get

p[OH-]

$= - [-3.958]\\= 3.958$

Now we know that

$pKw = 14.0$

Substituting the value of pOH in the above equation, we get -

$14.0 = p[H+] + 3.958\\p[H+] = 14 - 3.958\\p[H+] = 10.042$

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2 years ago

Which substance gets broken down in a homogeneous mixture? O colloid solution solute Osolvent

astra-53 [7]

Answer:

Solute

Explanation:

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3 years ago

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timofeeve [1]

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3 years ago

Most marble is composed primarily of

KatRina [158]

Answer:

It is composed primarily of the mineral calcite (CaCO3) and usually contains other minerals, such as clay minerals, micas, quartz, pyrite, iron oxides, and graphite.

Explanation:

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8 0

3 years ago

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Can u plz give an answer to me thank you​

Can u plz give an answer to me thank you