Use the information in the table to describe the temperature-vs.-time diagrams.

Which number on the graph represents a solid?
Which number on the graph represents the phase change melting?
Which number on the graph represents the phase change boiling?

Answer: what is this give more esplanation

Explanation:

The forces of attraction that are present or exist between molecules of [tex]CH_2F_2[/tex]  are as follows:

The force of attraction may be defined as a type of property that pulls the body towards its surface. It is the one through which atoms in molecules or elements are held together with different characteristics on the basis of their structure and functions.

It is known that fluorine has a higher electronegativity than carbon atoms. This difference in electronegativity is responsible for constructing a polar molecule. This significantly illustrates dipole-dipole interaction. It also demonstrates London-dispersion force which refers to the force between atoms and molecules.

It is a mechanism that overall represents the characteristics of each and every element specifically. The force of attraction governs the stability and functionality of the element and molecule as well.

Therefore, The forces of attraction that are present or exist between molecules of [tex]CH_2F_2[/tex]  are Dipole-dipole interaction, Hydrogen bonding, and the London Dispersion forces.

To learn more about Forces of attraction, refer to the link:

https://brainly.com/question/16033085

#SPJ2

Answer: 9.9 g

Explanation:

We can set up a proportion:

1.7/.55 = x/3.20

x = 9.9 g (to 2 s.f.)

Answer:

electrons flow from left to right

Explanation:

The common intermolecular forces present in the compounds CH3CH2CH2NH2 and CH3CH2C02H are Dispersion forces, dipole-dipole forces, and hydrogen bonding.

Intermolecular forces are forces of attraction between molecules of the same compound.

Intermolecular forces are important in the physical properties of molecules.

Some intermolecular forces are:

The given compounds are contain hydrogen bonding and London dispersion forces as well as dipole-dipole forces.

Therefore, the common intermolecular forces present in the compounds CH3CH2CH2NH2 and CH3CH2C02H are Dispersion forces, dipole-dipole forces, and hydrogen bonding.

Learn more about intermolecular forces at: https://brainly.com/question/2623973

#SPJ1

Answer:

if you mutliply 8x2 it would be 16 and half of 16 is 8 and if you multiply that by 2 you get 16 again and then if you multiply that by 2 it comes out to 32 then devide that by 2 and you get 16 then divide again and you get 8

Explanation:

Answer:

silicon is the most common semiconductor used in computer chips

Answer:

1.99 M

Explanation:

It gives the mass of a compound, KNO3. First, find the gram formula mass of KNO3. You should get 101.102 g/mol, or something very close. Next, divide given mass by g/mol mass to get number of moles. In this case, 45.3/101.102 = .44806, roughly.

Now, since it says molar concentration, it is asking for moles per liter of solution. If it only gives you 225 mL, or .225 L, you have to adjust for that value. Divide the number of moles you have by number of liters.

.44806/.225 = 1.99 M. This isn't the exact answer, but always remember to round for significant figures. Since both numbers contain 3 significant figures, your answer should have 3. Therefore 1.99 is your answer.

Answer:

Magnesium,Berillium,

Explanation:

they they belong to group II

Answer: 0.5 M

Explanation:

Ammonium chloride has a gram formula mass of 53.49 g/mol, so 26.8 grams of ammonium chloride is 26.8/53.49 = 0.501 mol.

So since molarity = (moles of solute)/(liters of solution), the answer is 0.501 / 0.25 = 0.5 M

the number of half-lives that would have occur to reduce a 15 g sample of Nobelium-254 down to 0.09375 g is 7.3

To calculate the number of half-lives that would have occur to reduce a 15 g sample of Nobelium-254 down to 0.09375 g, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the number of half-lives that would have occur to reduce a 15 g sample of Nobelium-254 down to 0.09375 g is 7.3

Learn more about half-lives here: https://brainly.com/question/25750315

Symbol: Au

Atomic Number 79

Electron number: 79

State at room temperature: solid

Answer:

Water and plastic

Explanation:

The other two dont make as much sense

25% of all coal fired power plants in the United States of America uses the Carbon Sequestration technology.

Carbon sequestration can be defined as the process of capturing and storing atmospheric carbon dioxide. It is one method of reducing the amount of carbon dioxide in the atmosphere with the goal of reducing global climate change.

Read more on Carbon Sequestration Technology:

https://brainly.com/question/26993240

#SPJ1

Answer:

mesosphere and thermosphere

Explanation:

The energy released in nuclear reactions are far larger than that released in chemical reactions due to the release of nuclear energy from the nucleus.

Energy is released in a reaction due to the breaking of bonds are well as formation of bonds.

The quantity of energy released in reactions differs according to the reaction type involved.

When compared to chemical reactions, the energy released in nuclear reactions are very much higher because of the changes that occurs in the nucleus of the atoms involving nuclear energy.

The energy, E released in nuclear reactions is given by the formula below:

[tex]E = mc^{2}[/tex]

where m is the mass of the substance and c is the speed of light.

Therefore, the energy released in nuclear reactions are far larger than that released in chemical reactions.

Learn more about nuclear reactions at: https://brainly.com/question/984564

#SPJ4

Answer:

3.39 x 1014 J/Kg

Explanation:

Answer:

4850.17

for an approximate result, multiply the mass value by 2.205

Explanation:

2200 Kg is an weight which is going to be 4850.17 pounds.

Kg is the unit and 2200 the amount of that unit. If your question wasn't that(looks like you might have missed something) then please put a comment so I can give you a better answer.

The correct IUPAC name for this compound as described here is 2-methylpropane.

The term IUPAC nomeclature refers to the generally accepted pattern for the naming of compounds. The international Union of Pure and applied chemistry (IUPAC) provides the guidelines for naming compounds. This system of nomenclature helps us to be able to write the unique name of a compound from its structure.

In the system of IUPAC, the parent name is the longest chain in the compound. The substituents are then given numbers in alphabetical order.

Now, the correct IUPAC name for this compound as described here is 2-methylpropane.

Learn more about IUPAC nomenclature: https://brainly.com/question/14379357

#SPJ4

Answer:

2-methylpropane

Explanation:

right on edge2022

Answer:

58.44 g/mol

hope it helps :)

mark brainliest!

Litmus is an example of an indicator, a substance that changes color depending on its pH (pH is a measure of the concentration of protons, or H+ ions). In the Titration Gizmo™, you will use indicators to show how acids are neutralized by bases, and vice versa.

To begin, check that 1.00 M NaOH is selected for the Burette, Mystery HBr is selected for the Flask, and Bromthymol blue is selected for the Indicator.

Calculate: Concentration is measured by molarity (M), or moles per liter. Brackets are also used to symbolize molarity. For example, if 0.6 moles of HNO3 are dissolved in a liter of water, you would say [HNO3] = 0.6 M.

Because HNO3 is a strong acid, it dissociates almost completely in water. That means the concentration of H+ is very nearly equal to that of HNO3.What is [H+] if [HNO3] is 0.01 M? 0.01 M

The pH of a solution is equal to the negative log of H+ concentration: pH = –log[H+]

Describe: The equation for the reaction of nitric acid (HNO3) and sodium hydroxide (NaOH) is shown on the bottom right of the Gizmo.

Measure: A titration can be used to determine the concentration of an acid or base by measuring the amount of a solution with a known concentration, called the titrant, which reacts completely with a solution of unknown concentration, called the analyte. The point at which this occurs is called the equivalence point.

Explain: A titration curve is a graph of pH vs. volume of titrant. The graph at right shows a typical titration curve for the titration of a strong acid by a strong base. (A strong base is one that has relatively high dissociation in water.)

According to theBrønsted-Lowry definition, an acid is a substance that is capable of donating a proton to another substance. A base is a substance that accepts protons. When an acid and a base are combined, the acid is neutralized as the base accepts the protons produced by the acid.One way to determine if a solution is acidic or basic is to use litmus paper, as shown above. There are two types of litmus papers: red and blue.How does litmus paper indicate an acid? Both strips turn red.

Answer:

Oxidation: loss of electrons, gain of oxygen

Answer: 4.74 moles of gas are in the container.

Explanation:

1. Use the ideal gas law. PV = nRT. and re-arrange from moles by divided RT on both sides.

2.You should get the following equation: [tex]n=PV/RT[/tex]

3.Insert values: [tex]n = PV/RT = \frac{(4.9 atm)(28 L)}{(0.082 (L*atm)/(K*mol)*(353K)} = 4.74 moles.[/tex]

4.There are 4.74 moles in the container.

Good luck with chemistry!

Answer:

The limiting reagent is the reactant that is used up completely. This stops the reaction and no further products are made. Given the balanced chemical equation that describes the reaction, there are several ways to identify the limiting reagent.Explanation:

Answer:

27.07 gm   nine days ago

Explanation:

17.5 = x (1/2)^9/14.3

x = 27.07 gm

Answer:

Nitrogen, Hydrogen, Chromium

Explanation:

N= Nitrogen

H= Hydrogen (it is not helium because helium is "He")

Cr= Chromium

Answer:

A

Explanation:

Developing work ethics won't lower your stress although it may make your conscience a little happier. Not B

Not C. Procrastinating just makes things harder. The mountain of things to do is not diminishing at all and your stress knows it.

Not D. Although D is the second best answer, setting goals is not really an action. It is a plan for how to work. But it is not work. Still having a goal is useful.

The answer is A. Just keep hitting what you have to do at a steady pace.

Answer:

orange juice because it a type of acid.

Answer:

44 g

Explanation:

hope this helps

We know

[tex]\\ \rm\Rrightarrow S\propto T[/tex]

According to gay lussac's law

[tex]\\ \rm\Rrightarrow P\propto T[/tex]

So our answer is high pressure and high temperature

Answer:

difference between metal and alloy is that the metal is a pure substance whereas the alloy is a mixture of two or more components.

Explanation:

Mostly the metalloids have the appearance just like the metallic appearance And also they are the brittle one's . Boron and silicon are the example. Note; By combining with other metals metalloid can form the alloy