1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Stells [14]
3 years ago
5

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

Chemistry
1 answer:
hram777 [196]3 years ago
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
You might be interested in
Which of the following statements is TRUE? (A) An ionic bond is much stronger than most covalent bonds.(B) Once dissolved in wat
Ainat [17]

Answer:

A)  An ionic bond is much stronger than most covalent bonds.

Explanation:

D) Ionic compounds have high melting points causing them to be solid at room temperature, and conduct electricity when dissolved in water. Covalent compounds have low melting points and many are liquids or gases at room temperature.

C) An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions. Ionic bonds are formed between a cation, which is usually a metal, and an anion, which is usually a nonmetal. A covalent bond involves a pair of electrons being shared between atoms.

A) Covalent bonds are stronger if you compare with ionic molecules, because their molecular orbital overlap is bigger. However, ionic molecules form lattices, thus the energy to break this lattice bond is stronger hence the ionic bond is stronger.

4 0
4 years ago
What tool measures mass?​
Tatiana [17]

Answer:

balances and scales, measurement transducers, vibrating tube sensors, Newtonian mass measurement devices and the use of gravitational interaction between objects.

Explanation:

4 0
3 years ago
25.0 mL of an HBr solution were titrated with 29.15 mL of a 0.205 M LiOH solution to reach the equivalence point. What is the mo
trapecia [35]

The molarity of HBr solution is 0.239 M

calculation

write the equation for reaction

that is LiOH +HBr → LiBr +H20

find the moles of LiOH used

moles =molarity x volume

=0.205 x 29.15 = 5.976 moles

by use of mole ratio between LiOH :HBr which is 1:1 the moles of HBr is therefore= 5.976 moles

Molarity of HCL= moles /volume

= 5.976/25 = 0.239 M

7 0
3 years ago
The bonds that link many water molecules together to form a water drop are _____ bonds.
Gelneren [198K]

The bonds found between water molecules are called:

Hydrogen bonds

which contribute to water having a high number of Van Der Waals forces.

Explanation:

A hydrogen bond is an electromagnetic attraction within polar molecules in which hydrogen is joined to a larger atom, such as oxygen or nitrogen. This is not a dividing of electrons, as in a covalent bond. Preferably, this is an attraction among the positive and negative poles of charged atoms.

7 0
3 years ago
25) How many unpaired electrons would you expect for the complex ion: [Co(OH)6]4-? A) 0 B) 5 C) 3 D) 1 E) 2 Answer: E
Mama L [17]

Answer:

Everyone, this is Ricky. And today we're working on Problem 51 from Chapter 22 and we're gonna determine the number of UNP. Aired electrons for the complex island of CEO seal for minus two I first up, let's determine the charge of art metal ion. So cue is our charge plus four minus one, which is a charge of each chloride ion. The overall charge of minus two Hugh is equal to plus two. I hope this will help

4 0
3 years ago
Other questions:
  • If an ice cube melts at 0oC but water also freezes at 0oC, what is the difference between melting and freezing in terms of (a) t
    8·1 answer
  • What is the effect of temperature on the solubility of a solid in a liquid
    10·2 answers
  • Describe the relationship between temperature and kinetic energy.
    10·1 answer
  • Which is the safest method for diluting concentrated sulfuric acid with water?
    5·1 answer
  • Scientists made the following two observations about emission spectra: each element has a unique emission spectrum. atoms emit e
    14·2 answers
  • In swimming, you apply a force to the water to move yourself forward. The greater the water pressure, the faster you can swim. T
    13·1 answer
  • What elements mass number is 15
    12·2 answers
  • If you reply with a link, I will report you​
    13·1 answer
  • Use the periodic table to choose the correct name for each of the following substances. Check all tha
    7·1 answer
  • Energy is anything that is made of atoms and has mass.<br> A. True<br> B. False
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!