What is the van't hoff factor of C7H7NO?
Answers
Answer:
i = 1
Explanation:
Van't Hoff factor (i) is explained as the number of ions dissolved in solution.
It is needed to determine colligative properties which depend on the amount of solute.
C₇H₇NO is an organic compound → benzamide
All the organic compound have 1, as Van't Hoff factor.
In order to predict i, you consider ionic salts. For example:
AlCl₃
CaCl₂
NH₄NO₃
When you dissociate them, you determine i:
AlCl₃ → Al³⁺ + 3Cl⁻ i =4
CaCl₂ → Ca²⁺ + 2Cl⁻ i = 3
NH₄NO₃ → NH₄⁺ + NO₃⁻ i =2
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Does Halite have non-metallic luster? a) Yes b) No
Consider the two facts below:Fact 1: Dissolved oxygen is one of the mostimportant nutrients needed by fish in the aquaticenvironment to survive.Which scenarios may be explained by the facts onthe left? Check all that apply.ID There is more dissolved oxygen in colderwaters than in warm water.IMFact 2: Unlike solids, whose solubility increaseswith increasing temperature, the solubility of gasesgenerally decreases with increasing temperature.INDThere is less dissolved oxygen in colderwaters than in warm water.Fish life in the ocean is more abundant duringthe seaons with warmer water than seasonswith cooler waterHIIIf ocean temperatures rise, then the risk tothe fish population increases.DONE W
If you knew the number of valence electrons in a nonmetal atom, how would you determine the valence of the element?
a. ethanol.
b. gasoline.
c. opiates.
Answers
Answer:
Alcohol contains A. ethanol.
Explanation:
Alcohol beverages are drinks that contain more than a minimal amount of ethyl alcohol or ethanol. Ethanol is a chemical compound, considered the main type of alcohol. It is produced by grain fermentation and used as a solvent, as an additive to gasoline and as the intoxicating ingredient of beer, wine, distilled spirits and other beverages.
(2) a solution (4) an isomer
Answers
A sample composed only of atoms having the same atomic number is classified as " element".
What is element?
A pure substance made up entirely of atoms with almost the same number of protons in respective nuclei was known as an element.
What is atoms?
Atoms are "the fundamental building components of matter," according to Wikipedia. It is the lowest fundamental unit of matter which thus possesses chemical element qualities.
A sample composed only of atoms having the same atomic number is classified as " element".
Therefore, the correct answer will be option (3).
To know more about atom and element.
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B) what mass of iron(lll) oxide, Fe2O3, must be consumed to prepare 2.50g of iron metal
Answers
One mole of dihydrogen is required to form one mole of iron, hence you'll need
B) Likewise : 2.50g of Iron is
Answers
Answer:
the same number of electrons in their outermost shells
Explanation:
On the periodic table, elements in the same column have the same number of electrons in their outermost shells (also known as valence electrons), and hence, are said to belong to the same group.
Similarly, elements on the same row in the periodic table have the same number of atomic orbitals and are said to belong to the same period.
The elements in each column have the same number of electrons in their outermost shells.
What is an element of a periodic table?
Elements are defined as the substances in chemistry that can not be broken down by any further chemical reaction.
Typical examples of elements include: oxygen, hydrogen,Helium, calcium, potassium, iron, Chlorine.
These elements are arranged in columns and the rows of the periodic table according to their atomic numbers.
The elements in each column have the same number of electrons in their outermost shells.
Learn more about atoms here:
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Answers
Answer : Solid
Explanation :
When the substance was tested in the lab it was seen that it maintains a unique shape, which is the differentiating property of solids. Also, they are very good conductors of electricity. Solid contains electrons, protons and neutrons this is a common thing which is found in every state of matter. This all details confirms that it will be solid.
we know that the substance
- a good conductor (and most of good conductors are metals and almost all the metals are solid)
- Could maintain a unique shape (gas technically does not have a shape and liquid's shape will be determined by the medium surrounding it)
Answers
The molecules will move faster