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wlad13 [49]
3 years ago
15

HELP ASAP PLEASE!

Chemistry
1 answer:
trasher [3.6K]3 years ago
4 0

i think the answer is d not sure tho tried to help the best i can if not d than it is c sorry bout that

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What is the hydrophobic effect? what types of atoms are most likely to be found in portions of molecules or entire molecules tha
HACTEHA [7]
Hydrophobic in simple terms is the "fear" of water.

In chemistry, Ionic salts are technically hydrophilic as they will dissolve in water.
most fats and oils or triesters won't why?

salts are made from ions and their structure contain polar bonds Na+ and Cl-
Fats and oils tend to not have these.

Fats and oils contain many carbon covalent bonds which are non-polar which tend to make the molecule non-polar as a whole, therefore, it can't dissolve in water and is said to be hydrophobic.

Hope that heps :)
NB included a diagram to help.

7 0
3 years ago
From where do the gems used in Jewlery come? A. they are mettallic ore B.they are nonmettallic silicates C. they are mettallic m
mixas84 [53]
The answer is D, because gems are usually not mettallic
6 0
3 years ago
Read 2 more answers
How do isotopes of an atom differ? how are they the same?
otez555 [7]

Answer: Isotopes of an atom are different because they have different atomic masses and different number of neutrons within their nucleus. They are the same since they will always have the same atomic number/number of protons in their nucleus.

Explanation:

5 0
3 years ago
Urgent!!! Need answers!!!!??
vampirchik [111]

Answer:

Explanation:

What is the identity of the atom shown?

Answer:

Chlorine

Explanation:

An atom consist of electron, protons and neutrons. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.

All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other. For example if neutral atom has 6 protons than it must have 6 electrons. The sum of neutrons and protons is the mass number of an atom while the number of protons are number of electrons is the atomic number of an atom.

In given picture it can be seen that there are 17 protons and 18 neutrons are present with in nucleus it means atomic mass is 35 amu and 17 electrons are present out side the nucleus it means its atomic number of 17.

The atomic number of chlorine is 17 and mass number is 35.5 amu thus the given atom is of chlorine.

Elements in the same group/family of the periodic table are similar in what way?

Answer:

D. They have the same number of valence electrons.

Explanation:

The elements in the same group have similar properties due to same number of valance electrons. For example

Consider the group two. It is alkaline earth metals's group. It consist of six members Beryllium, Magnesium, Calcium, Strontium, Barium and radium. All these have two valance electrons.

Electronic configuration of Beryllium:

Be = [He] 2s²

Electronic configuration of Magnesium:

Mg = [ Ne] 3s²

Electronic configuration of Calcium:

Ca = [Ar] 4s²

Electronic configuration of Strontium:

Sr = [Kr] 5s²

Electronic configuration of Barium:

Ba = [ Xe] 6s²

Electronic configuration of radium:

Ra = [Rn] 7s²

7 0
3 years ago
Is MELTING ICE endothermic or exothermic?
Lemur [1.5K]
Endothermic you can see this by putting a thermometer in a glass or warm water, adding an ice cube and watching the temperature go down as the ice melts
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