Why are hydrophobic molecules such as fats and oils unable to dissolve in watery solutions?

Answers

Answer 1

Answer: Hydrophobic mplecules are unable to fissolve in watery solution becuse they dislike water.

Hydro= water
-phobic= fear

Hydrophobic= fear of water, or disliking water
*Think of it like this:
when you mix oil and water, do they mix, or does oil float at the top?

If your reply is "oil float to the top", then you're right. Oil and water DOES NOT mix together. Hope that help!

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All funguslike protists are able to do this at some point in their lives

Answers

Protists belong to the group eukaryotes (having their DNA enclosed inside the nucleus). They are not plants, animals or fungi but they act like one. They can be in general subgroups such as unicellular algae, protozoa and molds.

Stalactites and stalagmites are examples of _____.organic sedimentary rock
contact metamorphism
extrusive igneous rock
chemical sedimentary rock

Answers

The right option is; chemical sedimentary rock

Chemical sedimentary rocks are rocks that are formed by precipitation of minerals from water. Chemical sedimentary rocks are also called evaporates and they are usually composed of the minerals halite (calcium chloride) and gypsum (calcium sulfate). Examples of chemical sedimentary rocks include stalactites, stalagmites, rock salt, flint, and some dolomites.

Answer:

The correct answer is option D, chemical sedimentary rock

Explanation:

Both stalactites and stalagmites are called drip stone as they are formed of the dripping water consisting of minerals. Both stalactites and stalagmites hang up from the ceiling of caves. These are also refereed to as Chemical sedimentary rocks formed by precipitation. The three major processes involved in the formation of these two rocks are –

a) Physical weathering – which disintegrates the minerals contained in the igneous, sedimentary, or metamorphic rock

b) Chemical weathering – which involves dissolution of weathered rock minerals

c) Precipitation of the dissolved minerals.

Within a particular compound, an atom gives up two electrons. This atom is A. part of a covalent compound.
B. positively charged.
C. negatively charged.
D. not part of an electrolyte.

Answers

Answer:

The correct answer is option B. positively charged.

Explanation:

Hello!

Let's solve this!

When an atom yields its electrons, it yields part of its negative charge. Therefore, it immediately transforms into a positively charged ion.

This positively charged ion is called cation.

We conclude that the correct answer is option B. positively charged.

Positively charged due to donating two electrons and becoming an ion.

Which of the following statements describes the process of deposition?A. Soil becomes rich through erosion allowing for ample plant growth.
B. Minerals are deposited into the soil through erosion.
C. The surface area of rocks decreases because of acid rain.
D. Materials are transported through erosion and are dropped in another location.

Answers

Deposition can be best described as materials being transported through erosion that are dropped in another location. When the sea loses energy, the elements it has been carrying - such as rocks, pebbles and sand - are dropped in a new place.

Which of the following statements describes the process of deposition?Deposition can be best described as materials being transported through erosion that are dropped in another location, so the answer is D.

How many moles of chlorine, cl, are there in 8 moles of carbon tetrachloride, ccl4?

Answers

Moles are the amount of substance

the break down of CCl₄ is as follows

CCl₄ --> C + 4 Cl

in the compound CCl₄ - 1 mol of CCl₄ contains 4 mol of Cl

so for every 1 mol of CCl₄ there are 4 mol of Cl

then in 8 mol of CCl₄ - there are 4 x 8 = 32 mol of Cl

so 8 mol of CCl₄ contains 32 mol of Cl

answer is 32 mol of Cl

$\boxed{{\text{32 moles}}}$ of chlorine are present in 8 moles of ${\text{CC}}{{\text{1}}_{\text{4}}}$ .

Further Explanation:

Mole is a measure of the amount of substance. It is defined as the mass of a substance that has the same number of fundamental units as there are atoms in 12 g of carbon-12. Such fundamental units can be atoms, molecules or formula units.

In ${\text{CC}}{{\text{l}}_4}$ , both carbon and chlorine are non-metals. Carbon has four valence electrons whereas chlorine has seven valence electrons. Both share two electrons with each other and a single covalent bond is formed between a carbon and a chlorine atom. So carbon forms four single bonds with four chlorine atoms in order to complete its octet and the octet of chlorine is also fulfilled. This bond is formed due to sharing of the electrons and therefore ${\text{CC}}{{\text{l}}_4}$ is a covalent compound. (Refer to the attached image)

${\text{CC}}{{\text{l}}_4}$ is a covalent compound. So 1 mole of ${\text{CC}}{{\text{1}}_{\text{4}}}$ contains 1 mole of carbon and 4 moles of Cl.

Number of moles of Cl in 1 mole of ${\text{CC}}{{\text{l}}_4}$ = 4

So the number of moles of Cl in 8 moles of ${\text{CC}}{{\text{l}}_4}$ is calculated as follows:

$\begin{aligned}{\text{Moles of Cl}}&=\left({8\;{\text{mol}}\;{\text{CC}}{{\text{l}}_4}}\right)* \left({\frac{{4\;{\text{mol}}\;{\text{Cl}}}}{{1\;{\text{mol}}\;{\text{CC}}{{\text{l}}_4}}}}\right)\n &=\boxed{32\;{\text{mol}}}\n\end{gathered}$

So 8 moles of ${\mathbf{CC}}{{\mathbf{l}}_{\mathbf{4}}}$ contain 32 moles of Cl.

Learn more:

1. Identification of ionic bonding: brainly.com/question/1603987

2. Which is a covalent compound? brainly.com/question/2083444

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Ionic and covalent compounds

Keywords: covalent compounds. chlorine, carbon, mole, non-metal, mutual sharing, molecular bond, hydrogen, chlorine, CCl4, brittle, enthalpy of fusion, heat, electricity, conductors, boiling points, positively charged, negatively charged.

Drag each tile into the correct box. This pie chart gives information on US sources of greenhouse gas emissions by economic sector in 2013. Based on the data, arrange the activities in decreasing order of their contribution to climate change. Commercial and Residential Agriculture Transportation Industry Electricity

Answers

Electricity

Industry

Transportation

Commercial and Residential

Agriculture

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