Label parts of this atom ( nucleus, protons,electrons,
neutrons )

Answers

Answer 1

Answer: I don’t see a photo that I could label but, maybe this pic will help so you can label the parts

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The solubility of KClO3(s) in water increases as the(1) temperature of the solution increases
(2) temperature of the solution decreases
(3) pressure on the solution increases
(4) pressure on the solution decreases

Answers

Answer: option (1) solubility of the solution increases.

Justification:

The solubility of substances in a given solvent is temperature dependent.

The most common behavior of the solubility of salts in water is that the solubiilty increases as the temperature increase.

To predict with certainty the solubility at different temperatures you need the product solubility constants (Kps), which is a constant of equlibrium of the dissolution of a ionic compound slightly soluble in water, or a chart (usually experimental chart) showing the solubilities at different temperatures.

KClO₃ is a highly soluble in water, so you do not work with Kps.

You need the solubility chart or just assume that it has the normal behavior of the most common salts. You might know from ordinary experience that you can dissolve more sodium chloride (table salt) in water when the water is hot. That is the same with KClO₃.

The solubility chart of KlO₃ is almost a straight line (slightly curved upward), with positive slope (ascending from left to right) meaning that the higher the temperature the more the amount of salt that can be dissolved.

Answer: Option (1) is the correct answer.

Explanation:

Solubility of a solute gets affected by change in temperature. That is, when we increase the temperature then more and more solute particles will dissolve into the solvent or solution.

Therefore, solubility of KClO3(s) in water increases as the temperature of the solution increases because on increasing the temperature it will completely dissociate into the solution.

The density of aluminum is 2.70 g/cm3. What is the mass of 235 cm3 of aluminum? 634.5 g
635 g
635 g/cm3
634.5 ml

Answers

Answer:

JUST B

Explanation:

Final answer:

The mass of 235 cm³ of aluminum, which has a density of 2.70 g/cm³, is calculated to be 634.5 g using the formula Mass = Density × Volume.

Explanation:

To find the mass of a given volume of a substance, you can use the formula: Mass = Density × Volume. In this case, the density of aluminum is given as 2.70 g/cm³ and you need to find the mass of 235 cm³ of aluminum.

Substitute the given values into the formula:

Mass = 2.70 g/cm³ × 235 cm³ = 634.5 g

Therefore, the mass of 235 cm³ of aluminum is 634.5 g.

Learn more about Density Calculation here:

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According to the periodic table of the elements, which set of elements has similar properties?A. H,C,I
B. He, H, Al
C. He, Ne, Ar
D. Na, Ca, Al

Answers

Set of elements which has similar properties is helium,neon,argon.

What are periodic trends in a periodic table?

Elements in the periodic table are arranged according to their atomic numbers according to modern periodic law which states that properties of elements are a periodic function of their atomic numbers.

In a group, elements have same number of valence electrons as for every element in a group a new shell is added and hence number of valence electrons remain same. In a period, electrons are added to same shell for every element present in the same period,because of which valence electrons do not remain same.

Valence electrons take part in chemical reactions and as they are same for elements present in the same group they have similar properties while for elements present in a period since they have different number of valence electrons they differ in properties.

Learn more about periodic trends ,here:

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In chemistry, "chemical properties" of elements usually refers to the electron affinity of an atom (number of valence electrons) This is because atoms with the same number of valence electrons will form similar compounds with other atoms, and undergo the same types of reactions.

Out of this list: He, Ne and Ar are all group 18 elements (Noble gases)
Therefore they have similar chemical properties.

How doesthe pressure inside a rigid container change if the
absolute temperature of the gas inside is quadrupled?

Answers

Answer:It quadruples

Explanation:

What is required for a chemical reaction to occur?(1) standard temperature and pressure(2) a catalyst added to the reaction system(3) effective collisions between reactant particles(4) an equal number of moles of reactants and products

Answers

I think the correct answer is option 3. A requirement for a chemical reaction to happen is an effective collisions between the reactant particles because it is where the electrons in the reactants interact with each other and form new substances.

In a heterogeneous mixture the materials are mixed together anda. can not be separated.
b. will be easily separated.
c. lose their own properties.

Answers

In a heterogeneous mixture the materials are mixed together and will be easily separated. The correct option among all the options that are given in the question is the second option or option "b". An example of a heterogeneous mixture is a bowl of colored candies. I hope the answer helps you.

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