Why aren't the masses on the periodic table whole numbers?

Answer:

Because as the concentration is diminished, the capacity to transfer electricity is diminished as well.

Explanation:

Hello!

In this case, since electrolytes are substances that are able to conduct the electricity in aqueous media (solutions in which water is the the solvent) because they have the capacity to form ions with both positive and negative charges, due to the fact that HCl is a strong acid, we notice it is fully ionized in solution and therefore it is a strong electrolyte. However, when the concentration is diminished, we can notice that strength is diminished as well because less ions will have the capacity to transfer the electricity and therefore it'd become a poor conductor or weak electrolyte.

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Answer:

1.0 M of KCl

Explanation:

First off, we're given 6.0 g of KCl. From here, we just find the molar mass of KCl by adding the molar masses of each element in the compound. The molar mass for the potassium is 39 g/mol, and the chlorine is 34 g/mol (all found on periodic table). We add those to find the compounds molar mass, which turns out to be 73 grams/ mole.

From here, we need to convert grams to moles so we multiply the grams by the molar mass so that we cancel out grams and only leave behind moles ( 6.0 grams x  1 mole/73 grams ≈ 0.08 moles).

From here, we need to find the amount of liters in the solution, considering that the Molarity (M) is the same equation as mol/ Liter. To find this, we must convert similar units so that they work, in this case, we must convert milliliters to liters. We know that 1000 milliliters are equal to 1 liter, therefore like what we did with the molar mass and grams, we must cancel out milliliter so we only have liters ( 80 mL  x  1 L / 1000 mL= 0.08 L)

From here, we divide the moles by the liters in order to make the molarity. The reason why is because as said before, M is equal to mol/L  

(0.08 moles / 0.08 L = 1.0 M)

I hope this helped you and good luck with your semester in Chemistry!

Answer:

The answer is B

Explanation:

Because conduction of heat or electricity occurs through a medium(for eg. The heat from a fire going through a metal pot . So in this example the pot is the medium of conduction).

And in this question the medium of heat conduction is the ground, with the heat moving in an upward motion .

Answer:

i think the answer is D. energy

Explanation:

Answer:

C

Explanation:

Answer:

I think is A

Explanation:

Hope it helps

Answer:

When chemicals in solution react, the proper way of writing the chemical formulas of the dissolved ionic compounds is in terms of the dissociated ions, not the complete ionic formula. A complete ionic equation is a chemical equation in which the dissolved ionic compounds are written as separated ions.

Answer:

it's most likely liquid to gas, solid to gas, and solid to liquid

Explanation:

Answer:

Decomposition.

Explanation:

Hello!

In this case, since we can find four types of reactions, combination, decomposition, single displacement and double displacement, for the reaction:

2NI2O3 (s) --> 4Ni (s) + 3O2 (g)

We can evidence that the reactant (only one) is separated into the elements forming it; therefore, we infer this is a decomposition reaction.

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Answer:

I think its protons

Explanation:

Electrons usually seem like the right answer but since electrons are negative and so our neutrons so its protons.

Answer:

Contents Home Courses University of California Davis UCD Chem 2C: General Chemistry III UCD Chem 2C: Larsen Text Unit 4: Chemical Kinetics Expand/collapse global location

4.7: Collision Theory

Last updatedSep 3, 2020

4.6: Using Graphs to Determine (Integrated) Rate Laws

4.8: Temperature and Rate

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Learning Objectives

Molecules must collide in order to react.

In order to effectively initiate a reaction, collisions must be sufficiently energetic (kinetic energy) to break chemical bonds; this energy is known as the activation energy.

As the temperature rises, molecules move faster and collide more vigorously, greatly increasing the likelihood of bond breakage upon collision.

Collision theory explains why different reactions occur at different rates, and suggests ways to change the rate of a reaction. Collision theory states that for a chemical reaction to occur, the reacting particles must collide with one another. The rate of the reaction depends on the frequency of collisions. The theory also tells us that reacting particles often collide without reacting. For collisions to be successful, reacting particles must (1) collide with (2) sufficient energy, and (3) with the proper orientation.

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Answer:

It cannot collide as all molecules don't touch each other but if it does i don't know sorry  

Explanation:

Answer:

false

Explanation:

"When a metal reacts with hydrogen carbon dioxide gas is produced" statement is false.

A chemical reaction is a representation of symbols of the elements to indicate the amount of substance and moles of reactant and product.

Generally, metals do not react with hydrogen. But some metals like sodium, potassium, calcium and magnesium force the hydrogen atom to accept the electrons given by these elements and form salt-like ionic solid compounds called metal hydrides.

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Answer:

fecl3 contains ionic bonds

Answer:

Answer:

15.9994 g/mol

Answer:

Atomic element

Explanation:

Carbon is considered an atomic element. Therefore, the correct option is option A among all the given options.

Chemical element carbon has the atomic number six and the letter C assigned to it. It has a tetravalent atom, which means that four of its electrons may be used to create covalent chemical connections. It is nonmetallic. The periodic table's group 14 includes it. The crust of the Earth contains 0.025 percent carbon. There are several ways in which the carbon atoms can connect, giving rise to different allotropes of carbon. Amorphous carbon, diamond, graphite, and fullerenes are examples of well-known allotropes. Carbon is considered an atomic element.

Therefore, the correct option is option A among all the given options.

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Answer:

85,020 milligrams

Explanation:

Multiply the mass value by 1,000

Answer:

please brainlist answer

Explanation:

The addition of K 3 Fe(CN) 6 to a solution causes the formation of a deep blue precipitate which indicates that iron(II) ions are present.

The conclusive test for iron(II) ions is the test by the use of potassium hexacyanoferrate III solution.

In qualitative analysis certain reagents are used to test for the presence of certain cations or anions. Those reagents react in a certain way with those reagents. Usually, a positive test may involve a color change, formation of a precipitate or evolution of a gas.

In the case of iron(II) ions, potassium hexacyanoferrate III solution is used in the conclusive qualitative test for the ion. A positive test involves the appearance of a deep blue precipitate.

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Answer:

Biggest Radii     V²⁺ > V³⁺ > V⁴⁺ > V⁵⁺     Smallest Radii

General Formulas and Concepts:

Explanation:

The Periodic Trend for Atomic Radii is down and to the left. Therefore, the element with the largest radius would be in the bottom left corner of the Periodic Table.

Anions will always have a bigger radii than the parent radii. When we add e⁻ to the element, we are increasing the e⁻/e⁻ repulsions. This will cause e⁻ to repel themselves more and thus create more space, increasing the radii size.

Cations will always have smaller radii than the parent radii. When we remove e⁻ from the element, we are decreasing e⁻/e⁻ repulsions. Since there are less e⁻, there is no need for more space and thus decreases the radii size.

Since Cations are smaller than the parent radii, the more e⁻ we remove, the smaller it will become.

Therefore, the least removed e⁻ Vanadium would be the largest and the most removed e⁻ Vanadium would be the smallest.

Answer: 0.287 M

Explanation:

Molarity is [tex]M=\frac{n}{v}[/tex]. n is moles or solute and v is volume of solution in liters. Since we are given the grams of potassium iodide, we want to convert that into moles. With the volume in mL, we want to convert that to liters.

[tex]19.4 g*\frac{1 mol}{166.0028g} =0.1169 mol[/tex]

[tex]4.07*10^2mL*\frac{1L}{1000mL} =0.407 L[/tex]

Now that we have moles and liters, we can find molarity.

[tex]M=\frac{0.1169mol}{0.407L} =0.287 M[/tex]

Now, we know the molarity is 0.287 M.

Answer:

The answer is 95 degree celcius

Answer:

Nitrous oxide, commonly known as laughing gas or nitrous, is a chemical compound, an oxide of nitrogen with the formula N ₂O. At room temperature, it is a colourless non-flammable gas, with a slight metallic scent and taste. At elevated temperatures, nitrous oxide is a powerful oxidiser similar to molecular oxygen.

Explanation:

Answer:

Topographical

Explanation:

When it comes to questions such as this one, the thing that could help you the most is a dictionary. A dictionary is an alphabetically arranged listing of words that contains various information about those words, such as their definitions, examples, origin, pronunciation, etc.

The term the given definition refers to is topographical. Topography is the study of the forms and features of land surfaces. The topography of an area refers to its physical properties and terrain or their description (e.g. how they're shown on a map).

Answer:

A

Explanation:

Explanation:

2-methyl pentane

At first, we need to select a long chain.

Then, we should number that chain (Numbering will start from that side from which attachment is closer)

Then, For IUPAC name, at first we write the position at which substituent is attached then, name of subsitent and finally the chain name and suffix.

Here,

position of substituent = 2

name of substituent = -methyl

chain name = pent

suffix = -ane

Then,

IUPAC name is 2-methyl pentane

Answer:  oxidation reactions are so fast the substance catches fire

Explanation:

Answer:

When oxidation reactions are so fast the substance catches fire

Explanation:

because i am big bwain

Answer:

Explanation:

Al(OH)₃

Total molecular weight = 27 + 3 x ( 16+1)

= 78

Al = 27

% of Al = 27 x 100 / 78 = 34.61%

O = 48

% of O = 48 x 100 / 78 = 61.55 %

H = 3

% of H = 3 x 100 / 78

= 3.84%

Al = 34.61%.

O = 61.55%.

H = 3.84%.

Answer:

it must be the answer C.

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