(8) need help asappp plss can u help

(8) Need Help Asappp Plss Can U Help

Answers

Answer 1

Answer:

See explanation

Explanation:

The can chiller has a cooling system which expels heat around the immediate vicinity of the can chiller.

Let us remember that convection is a mode of heat transfer that occurs as a result of the actual movement of the particles of a substance. In this case, we are going to consider the movement of air molecules.

As the can chiller expels heat, the air molecules around the can chiller become heated and less dense and begin to move away from the can chiller. They are quickly replaced by cold denser air.

This process of cycling of hot/cold air molecules is known as a convection current. It is set up as a result of the working of the can chiller.


Related Questions

Magnesium lon has less electrons than its atom

True
False

Answers

the answer is True
hope that helps

PLEASE HELP!
this is due tomorrow and i really need help!!! this is for my final grade! thank you

Answers

Answer:

what the--

Explanation:

pls tell one by one

Which is made up of only one type of atom?
A.a solution
B.a homogeneous mixture
C.an element
D.a compound

Answers

C - an element is only a single material so it is the option made of only once type of atom

Answer:

C. an element

Explanation:

Elements are pure substances and made up of only one type of atoms which cannot be further broken down.

How many particles are in 13.5 grams of Beryllium ?

Answers

There would be 9.03 x  [tex]10^{23}[/tex] particles in 13.5 grams of Beryllium.

Recall that 1 mole of a substance contains 6.02 x 10^23 atoms.

Number of moles in 13.5 grams of Beryllium = mass/molar mass

                    = 13.5/9

                       = 1.5 moles

Thus, total number of atoms in 1.5 moles Beryllium:

             = 1.5 x 6.02 x 10^23

                    = 9.03 x  [tex]10^{23}[/tex]

More on the number of particles in a substance can be found here: https://brainly.com/question/1445383

PLS HELP Discuss the phenomena of sunrise and sunset seen on Earth and describe how they will be different from the perspective of outer space. YOU WILL GET POINTS IF U DO THIS PLSSSSSS

Answers

Answer:

because you are cxloser

Explanation:

Write the electronic configuration of calcium and potassium.​

Answers

Answer:

Calcium= 2,8,8,2

Potassium= 2,8,8,1

Answer:

Electronic configuration of Potassium (K)

Atomic number of potassium = 19

Therefore number of electrons = 19

Since, maximum number of electrons in outermost orbit will not be more than 8, thus the 19th electron of potassium atom will reside in 4th.

Thus, electronic configuration of potassium is

given in first pic.

Number of orbit in potassium = 4

Electronic configuration of Calcium (Ca)

Atomic number of calcium = 20

Therefore number of electrons = 20

Thus, electronic configuration of calcium is given in sec pic.

Number of orbit in calcium = 4

Explanation:

❤️(◍ Jess bregoli ◍)❤

#keep learning!!

Sodium is less reactive than potassium.​

Answers

Answer:

Sodium atoms due to being smaller in size have high ionization energy and thus, it can't lose electrons easily and is more stable and less reactive. ... Hence, from this it is clear that sodium is less reactive than potassium.

Explanation:

(6) I need help very fast plsss

Answers

Their is a space so the heat is not transferred to the outside wall. Like an insulated coffee mug. If the heated liquid touched the outside wall it would cool the liquid to room temperature.

In vascular plants, the absorption of water from the soil into root hairs depends principally upon the presence of a
A. phototropic response by the root hairs
B. geotropic response by the conducting tissue
OOOO
C. higher concentration of water in the soil than in the root hairs
D. higher concentration of water in the root hairs than in the soil

Answers

Answer:

the answer is C) higher concentration of water in the soil than in the root hairs

Explanation:

Answer:

the answer is c

Explanation:

i just got it

The equilibrium constant (K) for the reaction
2HCI(g) = H2(g) + Cl2(g)
is 4.17 x 10-34 at 25°C. What is the equilibrium constant for the reverse reaction at the same
temperature?
H2(g) + Cl2(g) = 2HCl(g)

Answers

Answer: The equilibrium constant for the reverse reaction at the same temperature is [tex]2.40 \times 10^{33}[/tex].

Explanation:

The given reaction equation is as follows.

[tex]2HCl(g) \rightleftharpoons H_{2}(g) + Cl_{2}(g)[/tex] ... (1)

It's equilibrium constant (K) value is [tex]4.17 \times 10^{-34}[/tex].

Also, another reaction equation is as follows.

[tex]H_{2}(g) + Cl_{2}(g) \rightleftharpoons 2HCl(g)[/tex]

This is the reverse of equation (1). Hence, its equilibrium value is calculated as follows.

[tex]K' = \frac{1}{K}\\= \frac{1}{4.17 \times 10^{-34}}\\= 2.40 \times 10^{33}[/tex]

Thus, we can conclude that the equilibrium constant for the reverse reaction at the same temperature is [tex]2.40 \times 10^{33}[/tex].

A properly designed experiments changes one variable at a time. A student wanted to know which type of sugar would yield the greatest amount of energy for the cell when metabolized during cellular respiration by mitochondria. The student mixed yeasts in three different sugar solutions: maltose, glucose, sucrose. The three sets of yeasts were monitored to determine which sugar type yielded the most energy. List three factors that the student must keep constant during the experiment

Answers

Answer:

The amount of water

The amount of sugar and

The amount of yeast

Explanation:

A constant variable is that variable in an experiment which must be kept the same for all groups in order not to alter the results of the experiment.

In this question, the independent variable i.e. the variable being manipulated is the TYPE OF SUGAR USED while the dependent variable i.e. variable that responds to change is AMOUNT OF ENERGY. Three different types of sugar were used viz: maltose, glucose, and sucrose. To not alter the outcome of the experiment, the constants of this experiment i.e. variables that must be the same for all groups of the experiment, include the following:

- The amount of water

- The amount of sugar

- The amount of yeast used

Which method is best suited for separating a 500 mL sample of two miscible liquids whose boiling points differ by approximately 60°C?
A) use of a separators funnel
B) paper chromatography
C) evaporation
D) distillation
E) fractional distillation

Answers

The correct answer is E.) Fraction Distillation.

Consider the balanced reaction below:

P2O3 + 3H2O → 2H3PO3

How many grams of diphosphorus trioxide, P203, are required to produce 10.2 moles of phosphorous acid, H3PO3?

Answers

Answer:

5.1 moles of P2O3 are required

Explanation:

Based on the reaction, 1 mole of diphosphorus trioxide, P2O3, reacts with 3 moles of water to produce 2 moles of phosphorous acid, H3PO3. That means the conversion factor is: 1mol P2O3 = 2mol H3PO3.

The moles of P2O3 required to produce 10.2mol H3PO3 are:

10.2mol H3PO3 * (1mol P2O3 / 2mol H3PO3) =

5.1 moles of P2O3 are required

Plz help..
How to name alcohols...

Answers

Answer:

Alcohols are usually named by the first procedure and are designated by an -ol suffix, as in ethanol, CH3CH2OH (note that a locator number is unnecessary on a two-carbon chain). On longer chains the location of the hydroxyl group determines chain numbering. For example: (CH3)2C=CHCH(OH)CH3 is 4-methyl-3-penten-2-ol.10  

Explanation:

Answer:

ethanol formula :C2H5Oh


If no loss or gain of electrons occur by mixing of two atoms, we say that they may be attached to each
other due to
A proton attraction
B neutron attraction
C sharing of electrons
D opposite charges
<

Answers

Answer:

The correct option is option C

Explanation:

Loss or gain of electron(s) occurs in a type of attraction known as electrovalent or ionic attraction. In this type, there is transfer (or loss) of electron(s) from a metal atom to become positively charged while a nonmetal accepts (or gains) this electron to become negatively charged.

When this does not happen, two metal atoms can become attached by sharing the same electrons through a form of attraction known as covalent bonding. Here, the two atoms share electrons (known as shared pair) together to achieve there octet configuration on the outermost shell.  

Calculate the percentage of water of crystallisation in MgSO⁴ 7H²O

Answers

Answer:

Formula of EPSOM salt = MgSO4.7H2O

molecular mass of MgSO4.7H2O = atomic mass of Mg + atomic mass of S + 4 × atomic mass of O + 7 { 2 × atomic mass of H + atomic mass of O }

= 24 + 32 + 4× 16 + 7{ 2 × 1 + 16 } g/mol

= (24 + 32 + 64+ 126 ) g/mol

= 246 g/mol

molecular mass of total water = 7 × ( 2× atomic mass of H + atomic mass of O )

= 7 × 18 = 126 g/mol

now ,

% mass of H2O in EPSOM salt = {total molar mass of H2O/molar mass of Epsom salts }× 100

= {126/246 } × 100

= 12600/246

= 51.21 %

Explanation:

i have done it hope it helps

I think that to my calculations it should equal to 51.20 I am not sure but I tried x

Are you sure it’s d
Plz tell me

Answers

Answer:

? which question

Explanation:

Find out how many atoms will fit in one apple . Adius of an apple is about 3.5 cm and the radius of an atom is 1.5 angstrom

Answers

Answer:

1.3 × 10²⁵ atoms

Explanation:

Step 1: Calculate the volume of an apple

The radius of an apple is 3.5 cm (3.5 × 10⁻² m). If we assume it is a sphere, we can calculate its volume using the following expression.

V = 4/3 × π × r³

V(apple) = 4/3 × π × (3.5 × 10⁻² m)³ = 1.8 × 10⁻⁴ m³

Step 2: Calculate the volume of 1 atom

The radius of 1 atom is 1.5 A (1.5 × 10⁻¹⁰ m). If we assume it is a sphere, we can calculate its volume using the following expression.

V = 4/3 × π × r³

V(atom) = 4/3 × π × (1.5 × 10⁻¹⁰ m)³ = 1.4 × 10⁻²⁹ m³

Step 3: Calculate how many atoms are in 1 apple.

V(apple)/V(atom) = 1.8 × 10⁻⁴ m³/1.4 × 10⁻²⁹ m³ = 1.3 × 10²⁵

2 moléculas de clorato de potasio (KClO3) forman 2 moléculas de cloruro de potasio (KCl) y 3 moléculas de oxígeno (O2

Answers

The complete question is as follows: 2 molecules of potassium chlorate (KClO3) form 2 molecules of potassium chloride (KCl) and 3 molecules of oxygen (O2). Write a balanced equation for this reaction?

Answer: The balanced chemical equation is [tex]2KClO_{3} \rightarrow 2KCl + 3O_{2}[/tex].

Explanation:

A balanced equation is defined as the equation which contains same number of atoms on both reactant and product side when a chemical reaction occurs.

Hence, when 2 molecules of potassium chlorate [tex](KClO_{3})[/tex] form 2 molecules of potassium chloride (KCl) and 3 molecules of oxygen [tex](O_{2})[/tex] then its balanced equation will be as follows.

[tex]2KClO_{3} \rightarrow 2KCl + 3O_{2}[/tex]

Here, number of atoms on the reactant side as as follows.

K = 2Cl = 2O = 6

Number of atoms on the product side are as follows.

K = 2Cl = 2O = 6

Since, the number of atoms on reactant side are equal to the number of atoms on product side. So, this reaction equation is balanced.

Thus, we can conclude that the balanced chemical equation is [tex]2KClO_{3} \rightarrow 2KCl + 3O_{2}[/tex].

what type of solids conduct electricity in water: ionic, covalent, metallic?

Answers

Answer:

Ionic compounds are crystalline solids, soluble in water and conduct electricity when molten or in solution. These characteristics are due to the type of link that holds them together.

Silicon is in the same group of the Periodic Table as carbon. The compound
formed between silicon and hydrogen is likely to have the formula
SiHz
SiH
SizH:
SizHs

Please hurry

Answers

Answer:

SiH

Explanation:

The symbol for Silicon is Si, and the symbol for Hydrogen is H. There is no need for extra characters in the name.

The atom of element has 25 electrons and 30 neutrons write down its atomic number and mass number.​

Answers

Answer:

Atomic number = 25 protons

Mass number = ( 25 + 30 ) = 55

atomic-24
mass-55 hope this helps

A solution of ammonia NH3(aq) is at equilibrium. How would the equilibrium
change if NH4+ were added to the solution?

Answers

Answer: The equilibrium will shift in the direction of [tex]NH_3[/tex]

Explanation:

The chemical equation for the aqueous solution of ammonia follows:

[tex]NH_3+H_2O\rightleftharpoons NH_4^++OH^-[/tex]

According to Le-chtelier's principle:

If there is any change in the variables of the reaction, then the equilibrium will shift in that direction of equilibrium to minimize the effect.

If we add more amount of [tex]NH_4^+[/tex] to the solution, more of the products will be present. But according to Le-chtelier's principle, to minimize this effect, the equilibrium will shift in the backward direction that in the direction of [tex]NH_3[/tex]

Hence, the equilibrium will shift in the direction of [tex]NH_3[/tex]

PLEASEEEE HELPPPPP!!

Answers

Answer:

Its the first one

Explanation:

4 mol is the highest of the Bunch and 4.0L is the lowest making the first answer the correct one

9. How many significant figures are in the measurement 1,300 g?
2
unlimited
3
4

Answers

Answer:

4

4, because when there is no number after decimal then all the numbers are considered significant even 0 is the last number.

PCl5 <-> PCl3 + Cl2
PCl5 decomposes into PCl3 and Cl2 according to the equation above. A pure sample of Pcl5 is placed in a rigid, evacuated 1.00 L container. The initial pressure of the PCl5 is 1.00 atm. The temperature is held constant until the PCl5 reaches equilibrium with its decomposition products. The figures below shows the initial and equilibrium conditions of the system.

As the reaction progresses toward equilibrium, the rate of the forward reaction
A) increases until it becomes the same as the reverse reaction rate at equilibrium
B) stays constant before and after equilibrium is reached
C) decreases to become a constant nonzero rate at equilibrium
D) decreases to become zero at equilibrium

Answers

Answer:

PCl5 <-> PCl3 + Cl2

PCl5 decomposes into PCl3 and Cl2 according to the equation above. A pure sample of Pcl5 is placed in a rigid, evacuated 1.00 L container. The initial pressure of the PCl5 is 1.00 atm. The temperature is held constant until the PCl5 reaches equilibrium with its decomposition products. The figures below show the initial and equilibrium conditions of the system.

As the reaction progresses toward equilibrium, the rate of the forward reaction

A) increases until it becomes the same as the reverse reaction rate at equilibrium

B) stays constant before and after equilibrium is reached

C) decreases to become a constant nonzero rate at equilibrium

D) decreases to become zero at equilibrium

Explanation:

At equilibrium, both forward and backward reactions take place with constant speed.

The reaction will never cease.

Due to this reason chemical equilibrium is called dynamic in nature.

At equilibrium:

the rate of forward reaction = rate of backward reaction

As the reaction progresses toward equilibrium, the rate of the forward reaction decreases to become a constant nonzero rate at equilibrium.

Answer is option C).

When a system is in a state of chemical equilibrium, neither the reactant concentration nor the product concentration changes over time, nor does the system exhibit any further changes in its attributes. Here the correct option is C.

The system reaches a condition of chemical equilibrium when the rate of the forward reaction equals the rate of the reverse reaction. The system is considered to be in a state of dynamic equilibrium when the concentrations of the reactants and products do not change further as a result of the equal rates of the forward and reverse processes.

Equilibrium is impacted by a number of variables, including temperature, pressure, and the system's concentration. Here at equilibrium the rate of the forward reaction decreases to become a constant nonzero rate at equilibrium.

Thus the correct option is C.

To know more about chemical equilibrium, visit;

https://brainly.com/question/4289021

#SPJ6


What is the difference between a chemical and physical change?

Answers

In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed.

What are the various ways in which an atom of an element can achieve the noble gas configuration ? ​

Answers

Answer:

Atoms attain noble gas configuration by obtaining or donating and sharing of electrons present in their outermost shell.

The diagram below represents a beaker of water being heated by a flame. The arrows represent heat
transfer occurring in the beaker.
Which process is represented by the arrows in the diagram?
O condensation
O conduction
O convection
O radiation

Answers

Answer:

condensation

Explanation:

when heated beaker sed condensation

Which type of biomacromolecule contains paired bases? A. Nucleic Acid B. Carbohydrate C. Lipid D. Protein​

Answers

Answer:

D.Protien

Explanation:

DNA has four nucleobases: adenine, thymine, guanine, and cytosine. The nucleobases in a DNA strand have preferred partners to form hydrogen bonds with. Cytosine pairs with guanine, and adenine pairs with thymine. These are the base pairing rules that allow DNA replication and protein synthesis to happen.

Other Questions
Cng thc tnh hiu sut A company wants to estimate, at a 95% confidence level, the proportion of all families who own its product. A preliminary sample showed that 30.0% of the families in this sample own this company's product. The sample size that would limit the margin of error to be within 0.047 of the population proportion is: 11.16071428571429 rounded to 4sf Questlon 20 of 20 Which change to an object would quadruple its kinetic energy? A. Reducing its mass to one-half of its original value B. Increasing its velocitato twice its original value C. Reducing its velocity to one-half of its original value O D. Increasing its mass to twice its original value Choose the CORRECT statements. The superposition of two waves.I. refers to the effects of waves at great distances.Il. refers to how displacements of the two waves add together.Ill. results into constructive interference and destructive interferenceIV. results into minimum amplitude when crest meets trough. V. results into destructive interference and the waves stop propagating.A. I and II B. II and IIIC. I, II and III D. II, III and IVE. III, IV and VF. II, III, IV and V Help,,;;.,;.:.:::::::::::::::::.. Two parallel sides of a trapezium are 120 cm and 154cm and the other sides are 50 cm and 52 cm. Find the area of trapezium. what do you mean by professional education? explain with examples. John throws a biased four-sided dice.The probabilities of getting each number are summarised in the table below.Number1234Probability0.2x0.20.2Work out the probability that the dice lands on 2. Read this example:[Compulsory voting) should be implemented in the UnitedStates.Which type of claim is this statement an example of?A. Claim of cause and effectB. Claim of factC. Claim of valueD. Claim of policy Determine the number of solutions for the linear system that models this problem:Two people are playing a game. The difference in their points is 57. When the number of points eachplayer has is doubled, the difference is 114. How many points does each person have?Select one:a. no solutionb. two solutionsc. one solutiond. infinite solutions What is the final transformation in the composition of transformations that maps pre-image GHJK to image G'H"J"K"? In MNO, mM = 57 and mN = 75. Which list has the sides of MNO in order from shortest to longest? What factor can decrease the rate of a chemical reaction What is the measure of each exterior angle of the right triangle?x = y = z = determine the general term of this sequence 2;10;18;26;.........;394 What event provoked the U.S. to join the military combat in WWII and whatdid Hitler do that caused the war? How should a project plan be organized to ensure that the reader clearlyunderstands how to complete the project?A. Chronologically, so that the reader can follow the correct order ofthe stepsB. Problem-solution, so that the reader can solve problems as theycome upC. Cause and effect, so the reader can understand what causescertain issuesOD. Topically, so that the reader can connect the elements of theproject togetherOk Journalize the entries to record the following transactions for Zentric Corporation. Refer to the Chart of Accounts for exact wording of account titles. Jan. 22 Issued for cash 180,000 shares of no-par common stock at $4. Feb. 14 Issued at par value 44,000 shares of preferred 2% stock, $55 par for cash. Aug. 30 Issued for cash 9,000 shares of preferred 2% stock, $55 par at $60. How many molecules do we have for Na2Co3?