In the above picture, suppose the rod was follow instead of solid. Which statement is correct?
Due to convection, glob A will melt faster
Due to conduction, glob C will melt first
Due to convection, glob A will take longer to melt
Due to conduction, glob A will melt faster

Answer:

A

Explanation:

A

Answer:

Compound: A substance that is made up of more than one type of atom bonded together.

Mixture: A combination of two or more elements or compounds which have not reacted to bond together; each part in the mixture retains its own properties.

Explanation:

The different substances in a mixture are not chemically combined, whereas the different elements in a compound are. The atoms do not combine in the mixture, but they combine when they form a compound.

Answer:

c is the answer

Explanation: just answerd it and got it correct

Answer:

The theoretical yield of carbonic acid is 1.24 grams.

Explanation:

The balanced equation for the formation of carbonic acid by the reaction of carbon dioxide with water is:

CO₂ + H₂O → H₂CO₃

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of reactant and product participate:

An ideal gas is characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them constitutes the ideal gas law, an equation that relates the three variables if the amount of substance, number of moles n, remains constant and where R is the molar constant of the gases:

P * V = n * R * T

Moles of carbon dioxide can be calculated using ideal gas law equation. In this case:

Replacing:

1 atm* 0.495 L= n* 0.082 [tex]\frac{atm*L}{mol*K}[/tex] *298 K

Solving:

[tex]n=\frac{1 atm*0.495 L}{0.082\frac{atm*L}{mol*K}*298 K }[/tex]

n= 0.02 moles

Then, by reaction stoichiometry 0.02 moles of carbon dioxide produces 0.02 moles of carbonic acid.

Since the molar mass of carbonic acid is 62.03 g/mol, then you can apply the following rule of three: if there are 62.03 grams in 1 mole, how much mass is there in 0.02 moles?

[tex]mass=\frac{0.02 moles*62.03 grams}{1 mole}[/tex]

mass= 1.24 grams

The theoretical yield of carbonic acid is 1.24 grams.

Answer:

a

Explanation:

Air, steam, and water are the different phases of matter, including gas and liquid. Air, steam, and water under pressure are all examples of vapors. Thus, option A is correct.

Matter is any substance present in the form of liquid, solid, or gas. They have the property to get converted into another phase of matter under specific pressure and temperature conditions.

The vapor and air are present as an invisible gas, and water is a visible liquid that can be converted into a vapor state under high pressure and temperature condition. The process of evaporation can convert water molecules into vapor. Air and steam are used as vapor under pressure in inhalation devices.

Therefore, option A. the air, steam, and water are vapor under pressure.

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Answer: It’s called a alpha particle

Explanation:

The percent by  mass of H₂O in the hydrated compound, Na₂CO₃.xH₂O = 64.13%

Given

90 g sample Na₂CO₃.xH₂O

32.28 g Na₂CO₃

Required

The percent by  mass of H₂O

Solution

mass of H₂O = mass of sample - mass of the anhydrous salt, Na₂CO₃

[tex]\tt mass~H_2O=90-32.28=57.72~g[/tex]

The percent by mass :

[tex]\tt \%mass~H_2O=\dfrac{mass~H_2O}{mass~sample}\times 100\%\\\\\%mass~H_2O=\dfrac{57.72}{90}\times 100\%\\\\\%mass~H_2O=64.13\%[/tex]

Answer:

The name of the products are CO2 = carbon dioxide and H2O = water. The type of reaction is a combustion reaction.

Explanation:

Answer:

carbon di oxide and water

Answer: Lanthanide or Lanthanides

Explanation: Sorry that I don’t have an explanation. I just answered the question correctly myself. <33

The lanthanide and actinide are present in the periodic table as a transition metals.

Periodic table is defined as a tabular arrangement of chemical elements ordered by increasing atomic number and element groups.

The latest periodic table has an ordered grouping of the 118 known chemical elements.

Lanthanide is defined as any of the elements with rising atomic numbers beginning with lanthanum or cerium and ending with lutetium.

Lanthanide are rarely found on earth i.e. they are called rare earth metals.

Actinide is defined as any of the elements with increasing atomic numbers beginning with actinium or thorium and ending with lawrencium.

Actinide are the radioactive metals.  

Thus, the lanthanide and actinide are present in the periodic table as a transition metals.

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Answer:

0.04 moles of CH₄  are required

Explanation:

Given data:

Number of moles of CH₄ required = ?

Number of moles of O₂ present = 0.08 mol

Solution:

Chemical equation:

CH₄ + 2O₂     →   CO₂ + 2H₂O      

now we will compare the moles of oxygen and methane.

                      O₂          :        CH₄

                       2           :           1

                     0.08        :        1/2×0.08 = 0.04

Thus, 0.04 moles of CH₄  are required.

Answer:

Decomposition

Explanation:

One reactant has formed two products

Answer:

815mL am 10000000% sure

Answer:

abc

Explanation:

Answer:

Decreasing the distance between the particles by a factor of 2

Explanation:

To double the force between the two charge particles, the distance between the particles should be reduced by a factor of two.

According to coulombs law "force is directly proportional to the potential between the two charges and inversely proportional to the square of their distances".

       F  = [tex]\frac{kq_{1} q_{2} }{r^{2} }[/tex]

F is the electric force

k is the coulomb constant

q is the charge

r is the distance or separation

As the separation between the charges is reduced the force increases and vice versa

Answer:

A

Explanation:

A. P. E. X.

Answer:

I think it's C

Explanation:

all the other ones are homogeneous because they are uniform and the same when mixed

a. lemonade is one color(yellow when mixed the same throughout)

b. omelet is scrambled together and the cheese and eggs melt together to be one

c.ice cubes and water are the same, both water

trail mix is the only different one made with different ingredients that standout

hetero- different (trail mix)

homo- same (lemonade)

Answer:

The correct options are;

1) Hierarchical

2) Frustration

3) Attraction

4) Gative

5) Bridging

Explanation:

A career can be defined as a person's trade or occupation, which he or she engages and progresses in for a considerable portion of his or her life

When a person is engaged in a career that is not best suited to them can therefore lead to frustration, due to the length of time required in building a career

Agriculture, veterinary and nursing are mainly hands on or time input (for agriculture) careers, that seek to attract young people

The existence of poor health and safety conditions in an organization limits the advancement of individuals in their chosen career within the organization

Therefore, we have;

Career is a sequence of related jobs arranged in a hierarchical order

Wrong choice of career may lead to frustration

Agriculture, veterinary, and nursing provide better attraction to young people

Poor health and safety conditions in an organization causes gative effect on the choice of career

The essence of career planning is the bridging of individual with organizational goal.

Answer:

Light

Explanation:

Light is a good example of invisible particles. We cannot see light particles aka photon. We only know the light is present by the objects we see. Because we can only see objects when light reflects from them on our eyes.

[I could only think of one example if I can remember one more I'll edit it down]

Answer:

I think it is lightning

Explanation:

Lightning creates an electricity and it has lots of energy, so I think that it is lightning

Answer:

Good morning as well! The answer to this question is lightning.

Explanation:

Lightning is a source of electrical energy. Lightning also has a certain amount of voltage. Frozen raindrops bump into each other in the air causing an electrical charge. Therefore, lightning is created.

Answer:

zince chloride will be formed and hydrogen gas will be librated.

Explanation:

When dilute HCl is added to zinc pieces, a rection will takes place as follows :

[tex]Zn+HCl\rightarrow ZnCl_2+H_2[/tex]

It means that zinc chloride will form when zinc reacts with dilute HCL. Also hydrogen gas will produced.

As zinc is more reactive than hydrogen, it displaces hydrogen from its solution and forms zinc chloride. The form product is white in color and H₂ is an odorless gas.

Hence, zince chloride will be formed and hydrogen gas will be librated.

Answer:

pN₂ = 695 torr; pO₂ = 625 torr

Explanation:

Step 1: Calculate the moles of each gas

The molar mass of N₂ is 28.01 g/mol.

56 g × 1 mol/28.01 g = 2.0 mol

The molar mass of O₂ is 32.00 g/mol.

56 g × 1 mol/32.00 g = 1.8 mol

Step 2: Calculate the total number of moles

n = nO₂ + nN₂ = 1.8 mol + 2.0 mol = 3.8 mol

Step 3: Calculate the partial pressure of each gas

We will use the following expressions.

pN₂ = P × X(N₂)

pN₂ = 1320 torr × (2.0 mol/3.8 mol)

pN₂ = 695 torr

pO₂ = P × X(O₂)

pO₂ = 1320 torr × (1.8 mol/3.8 mol)

pO₂ = 625 torr

Answer:

B

Explanation:

Answer:

Partial pressure of O = 11.84 atm

Explanation:

To solve the excersise we think in the partial pressure law with mole fraction.

Mole fraction of gas = Partial pressure of gas / Total pressure

We have data of all the mole fractions:

Let's find out the partial pressure of oxygen in the tank. We replace data in the formula:

0.10 = Partial pressure of gas / 118.4 atm

0.10 . 118.4 atm = Partial pressure of gas → 11.84 atm

If we determine all the partial pressures:

0.70 . 118.4 atm = 82.88 atm → Partial pressure N

0.20 . 118.4 atm = 23.68 atm → Partial pressure He

We can determine the partial pressure of the trimix.

Sum of partial pressures of each gas = Total pressure of the mix

11.84 atm + 82.88 atm + 23.68 atm = 118.4 atm

(A way to see, if our operations were ok)

The partial pressure of oxygen in the tank is required.

The partial pressure of the oxygen in the tank is 11.84 atm.

[tex]x_o[/tex] = The mole fraction of oxygen = 10%

[tex]p[/tex] = The total partial pressure in the tank = 118.4 atm

The mole fraction of a gas is equal to the ratio of partial pressure of the gas to the total partial pressure.

[tex]x_o=\dfrac{p_o}{p}\\\Rightarrow p_o=x_op\\\Rightarrow p_o=0.1\times 118.4\\\Rightarrow p_o=11.84\ \text{atm}[/tex]

The partial pressure of the oxygen in the tank is 11.84 atm.

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Answer:

evaluation

Explanation: Big brain

Answer:

I dont know how to take a picture so I will just tell you the answer. The answer   is no.

Explanation:

Hope this helps.    :)      :D

Answer:

A

A pulley changes the direction of your force, but requires a greater input force.

Explanation:

A pulley changes the direction of your force, but requires a greater input force when machine does work. so option A is correct.

Any tool that makes work easier is a machine. We can complete tasks with the aid of machines by using less force and energy.

By using a simple machine, you can move anything with less effort, but you have to move it farther to do the same amount of labor.

Our bodies function like machinery. For instance, our arms can be compared to a machine that can be utilized to quickly lift objects.

By using a machine to perform work, either the force or the distance across which the force is delivered may rise, but not both at once. In other words, as one grows, either force or distance, the other must decrease. The force-distance trade off is what is meant by this.

Thus, option A is correct.

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Answer:

The answer is "[tex]\bold{Cl_4}[/tex]"

Explanation:

Please find the complete question in the attachment file.

In this question, it uses the Chemical equations, which is also known as the order to comply with the Law on Mass Conservation, substances must be balanced wherever volume cannot be generated or lost. This should be reacted that the reaction weight becomes equal to a product mass.