a container filled with 45 kg of liquid water at 95°c is placed in a 90-m3 room that is initially at 12°c. thermal equilibrium is established after a while as a result of heat transfer between the water and the air in the room. using constant specific heats, determine (a) the final equilibrium temperature, (b) the amount of heat transfer between the water and the air in the room, and (c) the entropy generation. assume the room is well sealed and heavily insulated.
Answers
Thermal equilibrium is established after a while as a result of heat transfer between the water and the air in the room.
Option B is correct
What is Thermal equilibrium?
If there is no net transfer of thermal energy when two physical systems are connected by a heat-permeable route, then they are in thermal equilibrium. Thermal equilibrium is in accordance with the first law of thermodynamics.
When a system's internal temperature is both uniformly distributed and stable over time, it is considered to be in thermal equilibrium with itself. Systems that are in thermal equilibrium are always in systems that are in thermodynamic equilibrium, while the reverse is not always true.
The two systems may reach thermal equilibrium without achieving thermodynamic equilibrium if the connection between them allows the transfer of energy as a "change in internal energy" but not the transfer of matter or energy as work.
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Related Questions
A radio station broadcasts at a frequency of 590,000 Hz. What is the wavelength of the radio waves?
Answers
Answer:
f = frequency = 590,000 Hz ===> 59×10^4 Hz
λ = Wavelength = ?
c = Speed of light in a vacuum = 3 × 10^8 m/s
** Hz = 1/sec
___o___o___
\(f = \frac{c}{λ} \\ \\ λ = \frac{c}{f} \\ \\ λ = \frac{3 \times {10}^{8} }{590000} \\ \\ λ = \frac{3 \times {10}^{8} }{59 \times {10}^{4} } \\ \\ λ =0.0508 \times {10}^{4} \: m \\ \\ λ = 508 \times {10}^{ - 4} \times {10}^{4} \: m \\ \\ λ = 508 \: m\)
I hope I helped you^_^
how many grams are in 8.00 moles of magnesium
Answers
A student pushes against a wall with 30 Newton’s of force and the wall does not move
Answers
Answer:
you can't go through a solid unless you broke the atoms in the wall
The production of iron and carbon dioxide from iron(iii) oxide and carbon monoxide is an exothermic reaction. How many kilo joules of heat are produced when 3. 40 mol fe20 3 reacts with an excess of co? fe20 3 (s) + 3co(g) ~ 2fe(s) + 3c02 (g) + 26. 3 kj
Answers
The kilo joules of the heat are produced when the 3.40 mol Fe₂O₃ reacts with an excess of CO is 89.4 kJ.
The balanced chemical reaction is as :
Fe₂O₃ (s) + 3CO(g) ----> 2Fe (s) + 3CO₂ (g) + 26.3 kJ
The number of the moles of Fe₂O₃ = 3.40 moles
The amount of the heat produced from 1 mole of the Fe₂O₃ = 26.3 kJ
Therefore, the amount of the heat produced from 3.40 mole of Fe₂O₃ is as :
The amount of the heat = 3.40 × 26.3 kJ
The amount of the heat = 89.4 kJ
Thus, the amount of the heat produced from 3.40 mole of Fe₂O₃ is 89.4 kJ.
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the reaction of 1-bromobutane with sodium hydroxide affords the substitution product 1-butanol. what would happen to the rate of the reaction if the concentration of both 1-bromobutane and sodium hydroxide were doubled?
Answers
The rate increases by a factor of 4. IF the rate of the reaction concentration of both 1-bromo butane and sodium hydroxide were doubled
What is meant by rate of reaction?
The rate of reaction refers to the speed at which the products are formed from the reactants in a chemical reaction.The reaction rate or rate of reaction is that the speed at which a chemical reaction takes place, defined as proportional to the rise in the concentration of a product per unit time and to the decrease in the concentration of a reactant per unit time. Reaction rates can vary dramatically
Why is rate of reaction important?
The rate of a reaction is a powerful diagnostic tool. By checking out how fast products are made and what causes reactions to slow down we can develop methods to improve production. This information is important for the large scale manufacture of many chemicals including fertilizers, drugs and household cleaning items.
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In what form is radiation emitted from the earth's surface
back into the atmosphere?
Answers
Answer:
thermal radiation
Explanation:
Outgoing Long-wave Radiation (OLR) is electromagnetic radiation of wavelengths from 3–100 μm emitted from Earth and its atmosphere out to space in the form of thermal radiation. It is also referred to as up-welling long-wave radiation and terrestrial long-wave flux, among others.
12 Mixture 1 contains sand and water
Mixture 2 contains salt and water
Which method of separation could be used to obtain each of the required products from each
mixture?
mixture 2
10 ottain sand
to obtam water
to obtain salt
to obtain water
crystalisation
distillation
filtration
fiftration
B
crystalisation
filtration
fitration
distillation
Ty tallation
Crystallisation
Answers
Answer:
B i tyink
Explanation:
brainlyest plssss
To obtain sand and water from mixture 1 , filtration process will be used.
To obtain salt from water in mixture 2 , crystallisation will be done.
What is physical treatment process?Physical wastewater treatment processes include use of racks, screens, clarifiers (sedimentation and flotation), and filtration. Chemical or biological reactions are important treatment processes, but not part of a physical treatment process.
It is given that the mixture contains
Mixture 1 contains sand and water
Mixture 2 contains salt and water
To obtain sand and water from mixture 1 , filtration process will be used.
To obtain salt from water in mixture 2 , crystallisation will be done.
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Jack walks outside in the afternoon and noticed the clouds are very dark. He states that it looks like it will rain very soon. His statement can be classified as A) prediction B) observation C) inference D) hypothesis
Answers
Answer:
I think it would be A but it might be B please tell if wrong
Answer:
A prediction
Explanation:
A prediction, or forecast, is a statement about a future event. They are often, but not always, based upon experience or knowledge and jack is using his knowledge on clouds to predict when it is going to rain.
two beakers were placed in a closed container. one beaker contained water, and the other a concentrated aqueous sugar solution. with time, the solution volume increased and the water volume decreased. explain what is happening on a molecular level. consider the vapor pressure of the water versus that of the sugar solution.
Answers
In the closed container, the water in one beaker and the concentrated aqueous sugar solution in the other beaker are undergoing a process called vapor-liquid equilibrium. On a molecular level, water molecules in the beaker with pure water evaporate and enter the vapor phase. Simultaneously, some of these water vapor molecules return to the liquid phase, maintaining equilibrium.
On a molecular level, what is happening in the beakers is that the water molecules are moving from the beaker containing water to the beaker containing the concentrated aqueous sugar solution. This is because the sugar molecules attract the water molecules, and the sugar molecules do not easily evaporate, causing the vapor pressure to be lower in the sugar solution beaker compared to the water beaker.
Therefore, the water molecules move from the higher vapor pressure (water beaker) to the lower vapor pressure (sugar solution beaker) in an attempt to reach equilibrium. As the water molecules move to the sugar solution beaker, the volume of the sugar solution increases, and the volume of the water decreases. This process is called osmosis. The concentration gradient of the sugar solution causes water molecules to move from an area of higher concentration (water) to an area of lower concentration (sugar solution).
Overall, this results in a decrease in the vapor pressure of the water beaker and an increase in the vapor pressure of the sugar solution beaker, until equilibrium is reached.
The concentrated aqueous sugar solution has a lower vapor pressure compared to pure water, as the presence of sugar molecules disrupts the interactions between water molecules, reducing their tendency to evaporate. This leads to a lower concentration of water vapor molecules above the sugar solution.
As the container is closed, water vapor molecules will move from areas of higher vapor pressure (above the pure water) to areas of lower vapor pressure (above the sugar solution) until equilibrium is reached. The water molecules will then condense and join the sugar solution, resulting in an increase in the volume of the sugar solution and a decrease in the volume of pure water. This phenomenon can be explained by Raoult's Law, which states that the vapor pressure of a solution is directly proportional to the mole fraction of the solvent.
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what is the name for elements located in group 2 of the periodic table? responses alkali metals alkali metals halogens halogens alkali earth metals alkali earth metals carbon family
Answers
The periodic table's group 2A (or IIA) is made up of the alkaline earth metals beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). They are more resistant and less reactive than the Group 1A alkali metals.
What is The periodic table's group 2A?The name was given to them because, at the temperatures that the early alchemists could work with, the oxides of these metals did not dissolve in water to form basic solutions; instead, they remained solids. The alkaline earth metals are too reactive to exist in their elemental form in nature, just like the Group 1A elements.Two of the valence electrons in the highest-energy orbitals of the alkaline earth metals are in this state (ns2). They possess higher ionization energies than alkali metals from the same era due to their lower size. Most of the time, ionization of alkaline earth metals results in a 2+ charge.The melting values of the alkaline earth metals are significantly higher than those of the alkali metals. For example, beryllium melts at 1287 oC, magnesium at 649 oC, calcium at 839 oC, strontium at 768 oC, barium at 727 oC, and radium at 700 oC. They are soft and light in comparison to many transition metals, yet they are tougher metals than the Group 1A elements.Because the 2+ cations have larger charge densities than the Group 1A cations, the salts of Group 2A metals are less soluble in water than those of Group 1A, but many Group 2A salts are at least moderately soluble. Some Group 2A salts, such as Epsom salt (MgSO47H2O) and gypsum (CaSO42H2O), form hydrates when they form a strong connection with water molecules.To Learn more About periodic table's group 2A refer to:
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How many total ions would be present in the formula for indium fluoride?
Answers
The total ions which would be present in indium fluoride is +2
How indium fluoride has a total ions of +2It follows that indium is an element which has an ion of +3 while fluorine has +1 ion. So therefore, adding these two ions together in the formula of this compund indium fluoride is given below:
+3 + (-1)
= +3 - 1
= +2
That being said, this indium fluoride has a number of properties. Some of it few properties are as follows:
It is a solid substance It is an inorganic compoundIt is whitish in appearanceIts chemical formula is written as InF3.In conclusion, it can be deduced from the explanation above that indium fluoride is a compound.
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Could cellular respiration
happen without photosynthesis? Explain your
reasoning
Answers
Answer:
No
Explanation:
Without photosynthesis, there would be no sugar, without which there could be no cellular respiration.Both animal cells and plant cells depend on cellular respiration for their energy needs, because both animal cells and plant cells need ATP.
how would u make a 1.0L of a 0.1 M solution of AgNO3?
Answers
Answer:
You need to dissolve 16.988 g of AgNO3 in enough water to make a final volume of 1.0 L to make a 0.1 M solution of AgNO3.
Explanation:
To make a 1.0 L of a 0.1 M solution of AgNO3, you need to know the molar mass of AgNO3, which is:
Ag = 107.87 g/mol
N = 14.01 g/mol
O = 16.00 g/mol (there are three O atoms, so 3 x 16 = 48.00 g/mol)
Total = 169.88 g/mol
Next, you need to calculate the mass of AgNO3 required to make a 0.1 M solution in 1.0 L of water:
0.1 moles/L * 1.0 L = 0.1 moles
Mass = moles x molar mass
Mass = 0.1 moles x 169.88 g/mol
Mass = 16.988 g
Therefore, you need to dissolve 16.988 g of AgNO3 in enough water to make a final volume of 1.0 L to make a 0.1 M solution of AgNO3.
How dose critical mass play a role in nuclear reaction?
Answers
Answer:
How does critical mass play a role in a nuclear reaction?
Explanation:
It is the minimum amount of material needed to start a fission reaction. ... It is the minimum amount of material needed to sustain a fission reaction.
this lab is all about separating individual metals out of a complex solution with multiple metals dissolved. this happens a lot in the real world, metal alloys we dig up from mines are usually mixtures of multiple metals. an example would be silver ores, which often contain copper. recognizing which metals are in a solution and how to separate them can be big business. below is a small chart detailing how both silver and copper ions react to the addition of a solution. use this data to answer the question below. hydrochloric acid sodium hydroxide copper clear yellow green solution blue precipitate silver white precipitate black precipitate if you have a clear solution and you add hydrochloric acid, what result would indicate that copper was in solution?
Answers
If a clear solution is treated with hydrochloric acid and a green solution or green coloration appears, it indicates the presence of copper in the solution. This is because copper ions react with hydrochloric acid to form a green solution of copper(II) chloride.
On the other hand, silver ions will not react with hydrochloric acid and therefore, the absence of any color change indicates that silver is not in the solution. It is important to note that this is just one of many tests that can be performed to identify and separate metals in a complex mixture, and it requires careful consideration and analysis of the specific properties of each metal in the mixture.
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At standard temperature and pressure, what is the volume of one mole of gas? (3 points)
Answers
One mole of an ideal gas will occupy a volume of 22.4 liters at STP.
1 mole of every gas occupies the same volume, at the same temperature and pressure. The molar volume of a gas is 22.4 liters at STP.
What kind of hydrocarbon is this? C-C-C-C-C-C-C-C-OH
Please help ASAP
Answers
Answer:
1-Octanol
Explanation:
Count the amount of carbon atoms in the chain. Nomenclature includes the position of the largest functional group position in the molecule.
In this case the carbon chain has 8 carbon atoms and one hydroxide functional group (OH)
1 (hydroxide is listed first in the carbon chain) - Oct(8 carbons) + anol (Alkanol hydrocarbon with a hydroxide group, use anol suffix )
= 1 - Octanol
Even though the same amount of energy was transferred into both substances from the air, the isopropanol evaporated while the water did not. Why do you think the isopropanol changed phase, but the liquid water did not ... Earlier in the lesson, you observed isopropanol and water drops on a paper towel.HELP HELP PLS
Answers
Answer:
The isopropanol evaporated while the water did not because the molecules don't stick together as strongly as the molecules in the water do. The water would need more energy transferred in, in order to evaporate.
Explanation:
The isopropanol evaporates and the water does not because the heat capacity and the latent heat of isopropanol is far lesser than that of water.
The latent heat of vaporization is the amount of heat required by a given amount of substance to change its phase from liquid to gas. The latent heat of vaporization of isopropanol is far less than water, so at the same amount of heat, the isopropanol changes phase as it can easily evaporate even if a small amount of heat is provided. Whereas water requires to absorb a lot of heat energy to change its phase, since its latent heat of vaporization and specific heat capacity is very large as compared to isopropanol.
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PLEASE HELPPP ILL GIVE BRAINLIEST!!!!!!!!!!!!!
Answers
Answer:
it travels through the veins
EASYYY CHEM POLARITYYYY
Answers
The arrangement of the molecules in order of lowest to highest polarity is: N₂, OI₂, and NH₃.
What is polarity in molecules of substances?Polarity in molecules of substances has to do with the difference in charge distribution in the molecules of substances as a result of the differences in the electronegativities of the atoms involved in the formation of the covalent bond.
When atoms with differences in electronegativity values combine to form covalent bonds, the electrons shared in the covalent bond are found more within the orbit of the more electronegative atom than the less electronegative atom.
Considering the given molecules:
The molecule with lowest polarity is N₂ since similar atoms are form the covalent bond.
The next molecule with a higher polarity is OI₂ since there is slight electronegativity difference,
The molecule with the highest polarity is NH₃ as a result of greater electronegativity differences.
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Observing and
How could you prove that your inference about the acidity of the paper is true?
Answers
By doing scientific experiment we can prove inference about the acidity of the paper is true.
what is the basic requirements of an experiment ?The experiment is nothing but to do the test of the hypothesis and are the main foundation of the scientific method, the steps include Make an observations, form hypothesis, conduct experiment, evaluation of result.
Then accept or reject the hypothesis from the evaluated result, if rejected make new hypothesis; Another important factor is variable which is compulsorily added to the experiment.
Three major types of variables included like dependent, independent and controlled variables.
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What property of a metal does the image represent
Answers
Answer:
malleable
Explanation:
The image represent in malleable property of metal.
The image possibly represents the photoelectric effect of a metal, which is when it emits electrons after being exposed to electromagnetic radiation. Metals are also characterized by physical properties such as conductivity, malleability, metallic luster, and metallic bonding.
Explanation:Based on your question, the image possibly represents the photoelectric effect, a key property of metals. This phenomenon occurs when a metal surface exposed to electromagnetic waves of a certain frequency absorbs radiation and emits electrons. These emitted electrons are called photoelectrons. Metals can also exhibit free electron model behavior, where electrons freely roam within the metal structure.
Metals possess unique physical properties like conductivity, malleability, and metallic luster. Malleability refers to the metal's ability to deform without breaking, while conductivity refers to the metal's ability to transfer heat or electricity. A metallic luster gives metals their characteristic shiny appearance.
Finally, metals are also known for their metallic bonding—a unique force that holds together the atoms within a metallic solid. Metallic bonding gives rise to many useful and varied bulk properties of metals.
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Any material that exerts magnetic force is considered a magnet true or false?
Answers
Answer:
Any material that exerts magnetic force is considered a magnet.
TRUE
Without consulting Appendix B, arrange each group in order of increasing standard molar entropy (S°). Explain.(a) Glucose (C₆H₁₂O₆), sucrose ( C₁₂H₂₂O₁₁ ), ribose ( C₅H₁₀O₅ )
Answers
The increasing order of standard molar entropy (S°) is as follow:
ribose ( C₅H₁₀O₅ ) < Glucose (C₆H₁₂O₆) < sucrose ( C₁₂H₂₂O₁₁ )
What is Entropy?Entropy is defined as the randomness of the particle. It depends on temperature and pressure or number of particle per unit volume.
It is directly proportional to the temperature and pressure of the gas.
What is Standard Molar Entropy?The standard molar entropy is defined as the entropy content of the one mole of pure substance at the standard state of temperature and pressure of interest.
The standard molar entropy is also defined as the total amount of entropy which 1 mole of the substance acquire, as it is brought from 0K to standard conditions of temperature and pressure.
The standard molar entropy depends on the molas mass of atom, molecules or compound.
ribose ( C₅H₁₀O₅ ) has lower standard molar entropy. Due to less complexity of this molecules.
While, complexity increases from Glucose (C₆H₁₂O₆) to sucrose ( C₁₂H₂₂O₁₁ ). Therefore, the standard molar entropy of sucrose ( C₁₂H₂₂O₁₁ ) is greater than Glucose (C₆H₁₂O₆).
Thus, we concluded that the increasing order of standard molar entropy (S°) is as follow:
ribose ( C₅H₁₀O₅ ) < Glucose (C₆H₁₂O₆) < sucrose ( C₁₂H₂₂O₁₁ )
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Scientists can identify an element by looking at the structure of a single
Answers
Answer:enzyme
Did i help you if so leave a thanks if not...than i will better try to explain the anwser or look into it a bit more to get the correct one.
Question 2
20 pts
What types of elements make up salt and what type of compound is it?
nonmetals only and covalent
metals only and ionic
metals and nonmetals and ionic
Answers
This is metal (Na) and nonmetal (Cl)
This makes it ionic!!!
Suppose you have measured the kinetics of the reaction, 2A+B→C. You measure the change in the B-concentration with time and determine the rate law is zeroth order in A and zeroth order in B and has a rate constant of k=0.0739Ms −1
. If the A-concentration is 0.20M and the B-concentration is 0.15M, what is the rate (in M s −1
) ? Note: answer must be entered in E-notation, for example 1.23EO (not 4.23 ) and 1.23E−1 (not θ.123 ). (value ±6% ) QUESTION 3 Suppose you have measured the kinetics of the reaction, 2 A+B→C+2D at room temperature using the method of initial rates. A table summarizing the results of four different experimental trails is shown below: Based on these data, if you assume the rate law is of the mathematical form, rate =kA ∗
B V
the value of x is and the value of y is
Answers
The rate of the reaction, 2A+B→C, with zeroth order in A and zeroth order in B, and a rate constant of \(k=0.0739 Ms^{−1} , is 0.0739 Ms^{−1}\).
The rate of the reaction can be determined using the rate law equation and the given concentrations of A and B.
The rate law equation for the given reaction is rate =\(k[A]^x[B]^y\), where [A] and [B] represent the concentrations of A and B, respectively, and k is the rate constant.
In this case, the rate law is zeroth order in A and zeroth order in B, which means that the concentrations of A and B do not affect the rate of the reaction. Therefore, x and y in the rate law equation are both zero.
To calculate the rate, substitute the values into the rate law equation:
rate = \(k[A]^x[B]^y\)
= \(k[0.20M]^0[0.15M]^0\)
= k
Given that the rate constant k is 0.0739 \(Ms^{-1}\), the rate of the reaction is also 0.0739\(Ms^{−1}\).
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look at image please
Answers
The mass of oxygen gas produced, given that 15.8 g of potassium permanganate is heated until no more oxygen gas is given off is 1.6 g
How do i determine the mass of oxygen produced?From the question given, the following data were obtained:
Mass of potassium permanganate = 15.8 gMass of remaining material after heating = 14.2 gMass of oxygen gas =?The mass of oxygen gas produced from the reaction can be obtained as follow:
Mass of potassium permanganate = Mass of remaining substance + mass of oxygen
Inputting the given parameters, we have:
15.8 = 14.2 + mass of oxygen
Collect like terms,
Mass of oxygen = 15.8 - 14.2
= 1.6 g
Thus, we can conclude that the mass of oxygen gas produced from the reaction is 1.6 g
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Question1 1. In the lab activity, the reaction rate was determined by the appearance of a product. However, the reaction rate can also be determined by the disappearance of a reactant. --aructi or Rate-a[Reactant] In each situation below, you are given a rate measured by the appearance of one component of the reaction and are asked to predict the rate of appearance or disappearance of another component, based on logic and stoichiometric relationships. For example, if the reaction is as follows: A +2B Products For every mole of A that is used, 2 moles of B are used so the rate of disappearance of B is twice the rate of the disappearance of A. This may be expressed as: Rate =-=-N2(g) + 3H2 (g) ? 2NH3(g) The reaction rate is measured as 0.032 M NHy/s. Determine the rate of disappearance of N2 and the rate of disappearance H2. Explain how you arrived at your answers. CH4(g)+202(g) -CO2(g)+2H,0(8) The reaction rate is measured as 2.6 M CH/s. Determine the rate of appearance of CO2 and the rate of appearance of H20. Explain how you arrived at your answers
Answers
- In the reaction N₂(g) + 3H₂(g) → 2NH₃(g), the rate of disappearance of N₂ is 0.016 M/s, and the rate of disappearance of H₂ is 0.048 M/s.
- In the reaction CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(g), the rate of appearance of CO₂ is 2.6 M/s, and the rate of appearance of H₂O is 5.2 M/s.
To determine the rate of disappearance or appearance of reactants or products in a chemical reaction, we can use the stoichiometric coefficients from the balanced equation. Let's analyze the given reactions:
1. N₂(g) + 3H₂(g) → 2NH₃(g)
The stoichiometric coefficients in this equation tell us that for every 1 mole of N₂ that reacts, 2 moles of NH₃ are produced. Therefore, the rate of disappearance of N₂ is equal to half the rate of appearance of NH₃, as it is consumed at half the rate. Since the reaction rate of NH₃ is given as 0.032 M/s, the rate of disappearance of N₂ would be:
Rate of disappearance of N₂ = 0.032 M/s ÷ 2 = 0.016 M/s
Similarly, for every 1 mole of N₂ that reacts, 3 moles of H₂ are consumed. Therefore, the rate of disappearance of H₂ is three times the rate of disappearance of N₂. Thus, the rate of disappearance of H₂ would be:
Rate of disappearance of H₂ = 0.016 M/s × 3 = 0.048 M/s
2. CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(g)
The stoichiometric coefficients in this equation tell us that for every 1 mole of CH₄ that reacts, 1 mole of CO₂ is produced. Therefore, the rate of appearance of CO₂ is equal to the rate of disappearance of CH₄. Since the reaction rate of CH₄ is given as 2.6 M/s, the rate of appearance of CO₂ would also be:
Rate of appearance of CO₂ = 2.6 M/s
Furthermore, for every 1 mole of CH₄ that reacts, 2 moles of H₂O are produced. Therefore, the rate of appearance of H₂O is twice the rate of disappearance of CH₄. Thus, the rate of appearance of H₂O would be:
Rate of appearance of H₂O = 2.6 M/s × 2 = 5.2 M/s
These rates are determined based on the stoichiometric relationships between reactants and products in each equation.
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Perform the following operationand express the answer inscientific notation.8.6500x103 + 6.5500x105[? ]x10!?)
Answers
First, we need to make the exponent of 10 the same for both.
So let's transform 6.5500 x 10^5 into some number x 10^3.
For this, we need to move the dot to the right, some places where it gives the number 3. In this case, 2 places.
655.00 x 10^3
now we can sum the numbers
8.6500 x 10^3 + 655.00 x 10^3 = 663.65 x 10^3
now we need to transform this number into scientific notation. For this, must have only one number before the dot(on the left side of the dot). We will move the dot to the left, 2 places:
6.6365 x 10^5
Answer: 6.6365 x 10^5