CHEMISTRY HIGH SCHOOL

Which term defines the amount that a solute can dissolve into a solution? A. solute level
B. solution level
C. solubility level
D. saturation level

Answers

Answer 1
Answer: The correct answer for the question that is being presented above is this one: "C. solubility level." The term defines the amount that a solute can dissolve into a solution is called the solubility level. The higher the solubility level, the faster it dissolves.

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Compare the speed and space of atoms in a solid, liquid and gas.

Answers

Answer:

Decrease order of speed of atoms in solid state, liquid state and gaseous states:  gas > liquid> solid

Decreasing order of space of atoms in solid state, liquid state and gaseous states:  gas > liquid> solid

Explanation:

Solid state : In this state, the particles are closely packed and does not have any space between them. They have least kinetic energy due to restricted movement. This state has a definite shape and volume.

Liquid state :  In this state, particles are present in random and irregular pattern. The particles are closely arranged but they can move from one place to another and thus have higher kinetic energy as compared to solids. This state has a definite volume but does not have a fixed shape.

Gaseous state :  In this state, particles are loosely arranged and have a lot of space between them. They have highest kinetic energy. This state has indefinite volume as well as shape.

Decrease order of speed of atoms in solid state, liquid state and gaseous states:  gas > liquid> solid

Decreasing order of space of atoms in solid state, liquid state and gaseous states:  gas > liquid> solid
Atoms in a solid stay closely together and form this sort of structure in their atoms , a liquids atoms are slightly spread apart and move around more freely than the solid atoms , gas atoms move as far away as possible from each other ( moving around a lot )

Given the following two thermochemical equations, H2(g) + ICI(8) HCl(g) + HI(g) AH° = -83.1 kJ = 12(8) + HCl(g) HI(g) + ICI(8) AH° = 73.6 kJ determine the standard enthalpy change associated with the following reaction: H2(g) + 21C1(g) 2HCl(g) + 12(9) AH° = ? -9.5 kJ -283.0 kJ O 156.7 kJ 0 -156.7 kJ O 9.5 kJ

Answers

Answer:

draw line DM perpendicular to ab

Why do ionic bonds have strong intermolecular forces? (Imfs)&
Why do covalent bonds have weak intermolecular forces? (Imfs)

Answers

The wording of your question is a bit strange (we usually don't say that bonds have IMFs and ionic compounds don't consist of molecules), but the answer to your question has to do with bond polarity. Strong IMFs are associated with very polar bonds (because increased polarity means greater magnitudes of charges at the poles and, hence, greater electrostatic attraction). Since ionic bonds involve the transfer of entire units of charge (to form cations and anions), they are highly polar (and highly polar means strong IMFs). Polarity in covalent bonds, however, does not arise from transfer of entire units of charge. Rather, they involve unequal sharing of electrons, and thus partial charge. Covalent bonds are, therefore, not as polar as ionic bonds (and less polar means weaker IMFs). I think it would be a good idea to keep in mind, though, that your question should be more along the lines of "Why are ionic bonds more polar than covalent bonds?".

The molarity of a solution of 5.0 g of KCl in 100. mL of solution is ________. A) 0.038 M B) 0.067 M C) 0.67 M D) 0.13 M E) 1.3 M

Answers

Answer:

\huge{ \boxed{0.67 \: \text{M}}}

Explanation:

The molarity of the solution can be found by using the formula:

c = (m)/(M * v)

c is the concentration in M , mol/dm³ or mol/L

v is the volume in L or dm³

m is the mass in grams

M is the molar mass in g/mol

From the question;

mass = 5 g

Molar mass (M) of KCl = 39 + 36.5 = 75.5 g/mol

Since the volume is in mL it has to be converted to litres.

1000ml = 1l \n \therefore \: 100ml = (100ml)/(1000ml) * 1l \n = 0.1l

v = 0.1 L

\therefore \: c = (5)/(75.5 * 0.1) \n = 0.67 \:

We have the final answer as;

0.67 M

True or false. Nitrogen is extremely important for good crops?

Answers

Answer:

True

Explanation:

Without enough nitrogen there is not enough nutrients for plants to make both aminoacids and many products of secondary metabolism

What is the definition of chemistry​

Answers

: a science that deals with the composition, structure, and properties of substances and with the transformations that they undergo
2a : the composition and chemical properties of a substance
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b : chemical processes and phenomena (as of an organism)
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