David says, "Pure honey has nothing else added." Susan says ,"The honey is not really pure. It is mixture of many subsatnces . Who is right? Explain your answer.

Answers

Answer 1

Answer: Really, both David and Susan are right; they were using the term "pure" in different ways. David likely meant "pure honey" in the sense that the honey was not altered or had any additives. Susan used pure as in a "pure substance" in chemistry. Susan is also right, because honey is a medley of carbohydrates, proteins, amino acids, and vitamins and minerals. Chemically, honey is not a pure substance- it's a mixture.

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f chlorine gas is bubbled through an aqueous solution of sodium iodide, the result is elemental iodine and aqueous sodium chloride solution. What kind of reaction took place?
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Which two physical properties allow a mixture to be separated by chromatography?(1) hardness and boiling point
(2) density and specific heat capacity
(3) malleability and thermal conductivity
(4) solubility and molecular polarity

Answers

Answer:

The correct option is: (4) solubility and molecular polarity

Explanation:

Chromatography is an analytical technique which is used for the separation of various components in a given mixture.

In this process, the mixture to be separated is first dissolved in the mobile phase, which carries it through the stationary phase, thus leading to separation of the various components.

This differential separation is the result of the differential migration which is based upon the solubility and polarity of the individual components of of the given mixture.

solubility and molecular polarity

Which sample has particles with the lowest average kinetic energy?(1) 1.0 g of I2 at 50.°C
(2) 2.0 g of I2 at 30.°C
(3) 7.0 g of I2 at 40.°C
(4) 9.0 g of I2 at 20.°C

Answers

The question asks average kinetic energy. So it is only related with the temperature. The higher temperature is, the higher kinetic energy is. So the answer is (4).

Answer : Option 4) 9.0 g of $I_(2)$ at 20°C

Explanation : Usually the average kinetic energy depends upon the state of the matter. Considering about the iodine at lower temperature the kinetic energy is found to be low. Whereas at higher temperature has higher kinetic energy value.

From the kinetic energy equation it can be easily related that K.E. is directly proportional to the temperature.

Refer the attached image for the relationship of temperature with kinetic energy.

Catalysts affect the chemical reactions that take place within the body. What function do catalysts perform in chemical reactions?a. Catalysts slow down the rate of chemical reactions.
b. Catalysts are always formed by chemical reactions.
c. Catalysts are used up during a chemical reaction.
d. Catalysts lower the activation energy of a chemical reaction

Answers

I think the best answer for this is D. Catalysts lower the activation energy of a chemical reaction. Catalyst is a substance that speeds a chemical reaction. It is not consumed as the reaction proceeds. A catalyst offers a new route for faster reaction.

The Gulf Stream is an example of a(n) ____________ current.a.
surface
c.
deep
b.
Coriolis effect
d.
Antarctic

Answers

It's a surface current because it's driven by the winds near the equator.

Explanation:
The Gulf stream System is one of the world's most intensely studied current systems. The Gulf stream begins upstream of the promontory, wherever the Sunshine State Current ceases to follow the seabed. The position of the Stream because it leaves the coast changes throughout the year. within the fall, it shifts north, whereas within the winter and early spring it shifts south.

It's a surface current because it's driven by the winds near the equator.

:)

The tendency of an element to react is closely related toa. its atomic mass.
b. attractions between its atoms.
c. the number of valence electrons in atoms of the element.
d. the ratio of protons to neutrons in atoms of the element

Answers

The tendency of an element to react is closely related to the number of valence electrons in atoms of the element (answer C).

Explanation

Valence electrons are outer shell electrons of an atom.They govern the bonding behavior of an element.

when element react to form compound, valence electron are involved.

Valence electrons are involved in a reaction either by sharing among atoms or may be transferred from one atom to another.

For example in formation of NaCl bond there is transfer of valence electron between Na and Cl. Na donate 1 valence electron while Cl accept 1 electron to form NaCl

Answer: c. the number of valence electrons in atoms of the element

The valence electrons determine how it would bond and if it would react.

How can a rock form by evaporation?What type of rock is it

Answers

crystsals can precipitate out of solution when some of the solvent is evaporated. For example, if you have sodium chloride in solution and you evaporate out the water some sodium chloride crystals will form. I hope this helps. Let me know if anything is unclear.

idk but Metamorphic Rocks

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How is the number of valence electrons related to the ionization energy of an element?A) low ionization energy correlates to elements with fewer valence electrons B) elements with higher ionization energy tend to have less valence electrons C) atoms with nearly full valence electrons shells have lowers ionization energy D) high ionization energy indicated a low likelihood to gain valence electrons

Which of the following is not part of daltons atomic theory