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3 years ago

What explains why human eyes come in a variety of colors?

1 answer:

8 0

We have different colored eyes because of the result of the amount of melanin that each person has in their genes. People who have very little will usually have lighter colored eyes like blue while people with more melanin usually have darker colored eyes . like brown

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How many atoms are there in 3 moles of Fe?

Harrizon [31]

The atomic mass of an element on the periodic table is the weight of 1 mole of atoms. For example, the atomic mass of Fe is 55.8 on the periodic table. If you weigh out 55.8 grams of Fe you will have 1 mole of iron, or 6.02 x 1023 atoms.

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3 years ago

As a boy was it a balloon its volume increases

goldenfox [79]

What is Avogadro’s Law

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4 years ago

A solution contains 1 LaTeX: \times\:×10−4 M OH– ions. Calculate the solution pH value, and determine if the solution is acidic,

oksano4ka [1.4K]

Answer: The pH value of the solution is 10 and the solution is basic in nature.

Explanation:

To calculate the pH of the solution, we need to determine pOH of the solution. To calculate pOH of the solution, we use the equation:

$pOH=-\log[OH^-]$

We are given:

$[OH^-]=1\times 10^{-4}M$

Putting values in above equation, we get:

$pOH=-\log(1\times 10^{-4})\\\\pOH=4$

To calculate pH of the solution, we use the equation:

$pH+pOH=14\\pH=14-4=10$

There are three types of solution: acidic, basic and neutral

To determine the type of solution, we look at the pH values.

The pH range of acidic solution is 0 to 6.9
The pH range of basic solution is 7.1 to 14
The pH of neutral solution is 7.

As, the pH of the solution is 10 and is lying in the range of basic solution, so the solution is basic in nature.

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3 years ago

What is N for ClO3, the chlorate ion?

Kaylis [27]

Answer:

Explanation: There is no molecule or ion as ClO3. The correct formula of chlorate ion is ClO3-. bolivianouft and 4 more users found this answer helpful.

Explanation:

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3 years ago

At least three things in your life you think involve chemistry (not from the lesson) and why you think they involve chemistry

timurjin [86]

Food , mixing substances and medicine

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3 years ago