The mass of carbon dioxide produced upon the complete combustion of 23.7 L of propane is 44062.5 g or 44.0625 kg.
The balanced equation for the combustion of propane is:
C3H8 + 5O2 → 3CO2 + 4H2O
From the balanced equation, we can see that for every 1 mole of propane, 3 moles of carbon dioxide are produced.
First, we need to find the mass of propane in the tank:
23.7 L x 1000 mL/L x 0.621 g/mL = 14718.7 g
Next, we need to convert the mass of propane to moles:
14718.7 g x 1 mol/44.1 g = 333.65 mol
Now, we can use the balanced equation to find the moles of carbon dioxide produced:
333.65 mol C3H8 x 3 mol CO2/1 mol C3H8 = 1000.95 mol CO2
Finally, we can convert the moles of carbon dioxide to mass:
1000.95 mol CO2 x 44.01 g/mol = 44062.5 g
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If the [Na+] = 0.250 M in a Na3P solution, calculate the concentration of Phosphorous ions and the number of grams of Na3P required to make 1.50 L of the solution
Answer:
[P³⁻] = 0.083 M
Mass of Na₃P required: 12.5 g
Explanation:
We dissociate the salt, like this:
Na₃P → 3Na⁺ + P³⁻
It is a ionic salt that can be dissociated.
As [Na⁺] is 0.25M, ratio is 3:1.
For 3 moles of sodium cathion, I have 1 mol of salt
So, for 0.25 moles of Na⁺, we have (0.25 . 1)/3 = 0.083M
So ratio with the anion is 1:1. In conclussion, [P³⁻] = 0.083 M
Finally, we have to know that molarity is mol/L so:
M = mol/L → 0.083mol/L = moles /1.50L
To make 1.50 L of solution, we need 0.083 mol/L . 1.50L = 0.125 moles
Let's find out the mass, with the molecular weight:
0.125 mol . 99.97g / 1mol = 12.5 g
How many Joules are required to heat 706 g of nickel from 25 °C to 300 °C?
(C=0.444 J/g - °C)
Answer:
70,219.4 Joules
Explanation:
To calculate the amount of energy required to heat a substance, we can use the following formula:
Q = m * C * ΔT
Where Q is the amount of heat energy required (in Joules), m is the mass of the substance being heated (in grams), C is the specific heat capacity of the substance (in J/g - °C), and ΔT is the change in temperature (in °C).
In this case, we want to find the amount of energy required to heat 706 g of nickel from 25°C to 300°C, given that the specific heat capacity of nickel is 0.444 J/g - °C.
First, we need to calculate ΔT, which is the difference between the final temperature (300°C) and the initial temperature (25°C):
ΔT = 300°C - 25°C = 275°C
Next, we can plug in the values we know into the formula:
Q = m * C * ΔT
Q = 706 g * 0.444 J/g - °C * 275°C
Q = 70,219.4 J
Therefore, it would require approximately 70,219.4 Joules of energy to heat 706 g of nickel from 25°C to 300°C.
Hypertonic, Isotonic, or Hypotonic
cell biology
Statements 6,9,13,14 are hypertonic, 8,10,12 hypotonic, and 7,11,15 are isotonic solutions.
6. Hypertonic
7. Isotonic
8. Hypotonic
9. Hypertonic
10. Hypotonic
11. Isotonic
12. Hypotonic
13. Hypertonic
14. Hypertonic
15. Isotonic
A hypertonic answer is any external solution that has excessive solute awareness and coffee water concentration as compared to frame fluids. In a hypertonic answer, the internet movement of water will be out of the frame and into the solution.
A hypotonic answer has a decreased awareness of solutes than some other answer. In biology, a solution outdoor of a cell is referred to as hypotonic if it has a decreased attention of solutes relative to the cytosol. because of osmotic stress, water diffuses into the cell, and the cell often appears turgid, or bloated.
A solution that has the same salt concentration as cells and blood. Isotonic answers are typically used as intravenously infused fluids in hospitalized sufferers. Isotonic solutions include electrolyte stability just like plasma in the bloodstream. whilst an isotonic solution is administered, the fluid extent of the affected person is elevated without a fluid shift. not unusual examples of isotonic solutions are zero.nine% ordinary saline and lactated ringers.
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How can changing the reaction conditions influence the yield of a chemical reaction?
please explain in detail
Answer:
I found this on the web hope this helps.
Explanation:
Le Châtelier's Principle states that a change in pressure, temperature, or concentration will push the equilibrium to one side of the chemical equation. So, if you manipulate the conditions to favor the product side, you increase the yield and vice versa.
Suppose that new evidence from many new experiments does not support an existing scientific theory. Which of the following is most likely to happen?
A. The theory will be revised.
B. The new evidence will be changed to support the theory.
C. New experiments will be conducted until evidence supporting the theory is obtained.
D. The theory will not be affected in any way.
the concept that science must be supported by experiments, we find that the correct answer is:
A. The theory will be revised.
Science is a series of models, concepts and laws that are supported by experimental evidence, for this reason if an experiment appears that cannot be explained by the current scientific model, the model must be revised to include this evidence, either by changing or expanding. the model.
We analyze the alternatives
A. True. Science must be supported by experimental results and in the event of any discrepancy, the models must be reviewed.
B. False. If the experiments are well done, you cannot change your results.
C. false. Models must explain all phenomena
D. Fasle. Theory must be changed
In conclusion with the concept that science is supported by experiments, we find that the correct answer is:
A. The theory will be revised.
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If the [OH1-] of a solution at 25oC is 5.8x10^(-5) mol/L, calculate the [H1+] in mol/L, the pH, and the pOH.
Answer:
1. [H⁺] = 1.58×10¯¹⁰ mol/L
2. pH = 9.8
3. pOH = 4.2
Explanation:
We'll begin by calculating the pOH of the solution. This can be obtained as follow:
Concentration of Hydroxide ion [OH¯] = 5.8×10¯⁵ mol/L
pOH =?
pOH = –Log [OH¯]
pOH = –Log 5.8×10¯⁵
pOH = 4.2
Next, we shall determine the pH of the solution. This can be obtained as follow:
pOH = 4.2
pH =?
pH + pOH = 14
pH + 4.2 = 14
Collect like terms
pH = 14 – 4.2
pH = 9.8
Finally, we shall determine the concentration of Hydrogen ion [H⁺] in the solution. This can be obtained as follow:
pH = 9.8
Concentration of Hydrogen ion [H⁺] =?
pH = –Log [H⁺]
9.8 = –Log [H⁺]
Multiply through by –1
–9.8 = Log [H⁺]
Take the anti log of –9.8
[H⁺] = antilog (–9.8)
[H⁺] = 1.58×10¯¹⁰ mol/L
SUMMARY:
1. [H⁺] = 1.58×10¯¹⁰ mol/L
2. pH = 9.8
3. pOH = 4.2
If your client receives a letter from SilverScript requesting proof of Creditable Coverage, and the client has already submitted proof of creditable coverage with the enrollment application, they can ignore the letter.
If your client receives a letter from SilverScript requesting proof of Creditable Coverage, they can ignore the letter is a false statement
What is Creditable coverage?Creditable coverage is known to be a form of an health insurance, that consist of prescription drug and also other kinds of health benefit plan that is known to meets the minimum amount of qualifications.
Note that the types of creditable coverage plans are group and individual health plans, student health plans, and others.
It is not right to ignore any letter sent to you concerning the case above as it may be vital and as such, the statement of If your client receives a letter from SilverScript requesting proof of Creditable Coverage, and the client has already submitted proof of creditable coverage with the enrollment application, they can ignore the letter is a wrong/false statement.
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Give an example of an internal variation.
the ground-state electron configuration of a mn2 ion is 1s22s22p63s23p63d5. therefore, mn2 is
The Mn2+ ion is paramagnetic.
The electron configuration provided, 1s22s22p63s23p63d5, represents the ground-state electron configuration of the Mn2+ ion.
To determine the electron configuration of Mn2+, we start with the electron configuration of neutral manganese (Mn), which is [Ar] 4s23d5. When the Mn atom loses two electrons to form the Mn2+ ion, the two electrons are removed from the 4s sublevel. Therefore, the electron configuration becomes [Ar] 3d5.
The Mn2+ ion has an incomplete 3d sublevel with five electrons. According to Hund's rule, when multiple orbitals of the same energy level are available, electrons will occupy separate orbitals with parallel spins before pairing up. This means that the five electrons in the 3d sublevel of Mn2+ will have parallel spins, resulting in unpaired electrons.
Unpaired electrons in an atom or ion make it paramagnetic, meaning it is attracted to a magnetic field. Therefore, the Mn2+ ion is paramagnetic due to the presence of unpaired electrons.
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How does dermal tissue play a key role in transpiration?
Answer:
Dermal tissue of the stems and leaves is covered by a waxy cuticle that prevents evaporative water loss. Stomata are specialized pores that allow gas exchange through holes in the cuticle. Unlike the stem and leaves, the root epidermis is not covered by a waxy cuticle which would prevent absorption of water.
Explanation:
Use the balanced equation to solve the problem.N2 + 3H22NH323.0g NH3 are made.How many liters of H₂ gas reacted at Stp? L
By using the ideal gas law to get volume we have"
\(V=\frac{nRT}{P}\)Where v is volume, T is temperatute, n is number of moles, R is the molar gas constant and P is pressure. At STP P= 101,325 Pa, T= 273.15 K and R= 8.314 J/mol K
\(\begin{gathered} \frac{RT}{P}=0.022414cm^3mol^{-1} \\ \\ V=0.0022414n \end{gathered}\)We must first convert mass to moles:
\(\begin{gathered} mole=\frac{mass}{molecular\text{ }mass} \\ mole=\frac{23.0g}{17.0g\text{ }mol^{-1}} \\ \\ mole=1.35 \end{gathered}\)\(To\text{ }determine\text{ }the\text{ }moles\text{ }of\text{ }H2\text{ }gas\text{ }reacted\text{ }we:\frac{2}{3}\times1.35=0.87\text{ }mol\)By substituting this value into the ideal gas law we have:
\(\begin{gathered} V=0.0022414cm^3mol^{-1}\times0.87mol \\ V=0.0019502cm^3 \\ \\ V=1.9502\times10^{-6}L \end{gathered}\)1.9502e-6L of H2 gas reacted at STP
A chemist conducts an experiment in which 2. 00 l of hydrogen gas is collected over water at 1. 00 ATM and 298. 15 K. The phrase over water means that the gas was collected by bubbling it into an inversed bottle filled with water which is sitting in a water bath. However the gas collected is now saturated with water vapor. The partial pressure of water vapor at 298. 15 K is 0. 0 300 ATM. Using Dalton's law calculate the pressure of the hydrogen gas in ATM
Answer:According to Dalton's law of partial pressures, the total pressure is equal to the sum of the partial pressures of each gas. In equation form, this looks like this ...
Pt = P1 + P2 + ...
Pt = total pressure
P1 = partial pressure of gas 1
P2 = partial pressure of gas 2
Explanation:
Question 11
Which formula represents a hydrocarbon?
C₂H6
C₂H5OH
C₂H5Cl
C₂H6O
Answer:
C₂H6
Explanation:
Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). Option A
A hydrocarbon is a compound that consists of only carbon and hydrogen atoms. It is important to identify the formula that represents a hydrocarbon among the given options:
A) C₂H6: This formula represents ethane, which is a hydrocarbon. Ethane consists of two carbon atoms bonded together with single bonds and six hydrogen atoms.
B) C₂H5OH: This formula represents ethanol, which is not a hydrocarbon. Ethanol contains a hydroxyl group (-OH), indicating the presence of oxygen in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.
C) C₂H5Cl: This formula represents ethyl chloride, which is not a hydrocarbon. Ethyl chloride contains a chlorine atom (Cl) in addition to carbon and hydrogen atoms. It is a haloalkane, not a hydrocarbon.
D) C₂H6O: This formula represents ethanol, which, as mentioned before, is not a hydrocarbon. Ethanol contains an oxygen atom (O) in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.
Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). It consists only of carbon and hydrogen atoms, making it a suitable representation of a hydrocarbon.
In summary, the formula C₂H6 (option A) represents a hydrocarbon, while the other options contain additional elements (oxygen or chlorine) that make them non-hydrocarbon compounds. Option A
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Show how the limiting reactant is determined for 3.80 g of magnesium reacting with 12.5 g of oxygen.
Answer:
Magnesium is the limiting reactant.
Explanation:
The balanced reaction is:
2 Mg + O₂ ⇒ 2 MgO
By stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction), the following quantities participate in the reaction:
Mg: 2 molesO₂: 1 moleMgO: 2 molesBeing the molar mass:
Mg: 24.31 g/moleO₂: 32 g/moleMgO: 40.31 g/moleThen the following quantities of mass participate in the reaction:
Mg: 2 moles* 24.31 g/mole= 48.62 gO₂: 1 mole* 32 g/mole= 32 gMgO: 2 moles* 40.31 g/mole= 80.62 gThe limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.
To determine the limiting reagent, it is possible to use the reaction stoichiometry of the reaction. You can use a simple rule of three as follows: If by stoichiometry of the reaction 32 grams of oxygen react with 48.62 grams of magnesium, 12.5 g of oxygen will act with how much mass of magnesium?
\(mass of magnesium=\frac{12.5 g of oxygen*48.62 grams of magnesium}{32 grams of oxygen}\)
mass of magnesium= 18.99 grams
But 18.99 grams of magnesium are not available, 3.80 molesgrams are available. Since you have less mass than you need to react with 12.5 grams of oxygen, magnesium will be the limiting reagent.
for an alloy of cu and ni of overall composition of 20 wt% cu and 80 wt% ni, what is the complete melting temperature?
Complete Melting happens when temperature occurs,the liquid line cuts this given composition. Because below this all material is solid phase . So complete Melting point is 1140 C .
A substance's melting point is the point at which it transitions from solid to liquid state. The solid and liquid phases are in balance at the melting point. A substance's melting temperature is pressure dependent and is normal room at a standard pressure such as 1 atm or 100 kPa. The melting point is the amount of energy needed to achieve a lipid's solid-to-liquid phase transition. The melting point of an organic solid could be determined by putting a small quantity in a small capillary tube, attaching it to the stem of a thermometer centred in a heaters bath, slowly heating the bath, and noticing the temperatures at which melting starts and ends.
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a gas is enclosed in a cylinder fitted with a light frictionless piston and maintained at atmospheric pressure. when 254 kcal of heat is added to the gas, the volume is observed to increase slowly from 12.0 m3 to 16.2 m3. a. Calculate the work done by the gas. b. Calculate the change in internal energy of the gas.
The work done by the gas for question A will be 4.2 * 10^5 J.
The change in internal energy of the gas for question B is 6.43 * 10^5 J.
What is work (in gas)?For a gas, it is the product of the pressure P and the volume V during a change of volume. The formula for work done in gas is W (work) = P (pressure) * V (volume)
Now, let's calculate the work done by gas to answer question A.
Work = Pressure * (Volume 2 - Volume 1)
= 1 atm * (16.2 - 12)
= 10^5 Pa * 4.2
= 4.2 * 10^5 J
So the work done by the gas is 4.2 * 10^5 J.
Now, let's find the change in internal energy of the gas.
The heat energy added to the system is
Q = 254kcal
= 254kcal * (4184J / 1 kcal)
= 1.063 * 10^6 J
The change in internal energy of gas is
ΔU = Q (the heat energy added) - W (work done by gas)
= 1.063 * 10^6 J - 4.2*10^5 J
= 6.43 * 10^5 J
Therefore, the change in internal energy of the gas is 6.43 * 10^5 J
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How can a chemical reaction be sped up? Select from the drop-down menu to correctly complete the statement. Expose more of the reactant by increasing the
Answer:
I think the answer is Temperature but i don't know your options so I'm just going off of my test
Explanation:
Write short note on the mole concept.
Relate the mole concept with stoichiometric calculations.
Answer:
A mole is defined as 6.02214076 × 1023 of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.
Explanation:
A balanced chemical reaction gives equivalences in moles that allow stoichiometry calculations to be performed. Mole quantities of one substance can be related to mass quantities using a balanced chemical equation. Mass quantities of one substance can be related to mass quantities using a balanced chemical equation.
Question 1
Which of the following properties uniquely identifies every element?
Number of valence electrons
Phase at room temperature
Number of protons
Charge of the atom
Answer:
Number of protons
Explanation:
Elements are arranged in the periodic table in an order of increasing number of protons. It's called the proton number or atomic number.
El coeficiente de dilatacion lineal del alcohol = 3,7×10-⁵. Si a una temperatura de 70°c ocupa el volumen de 0,15 m³, ¿cuanto incrementara su volumen si incrementamos su temperatura a 100°c
Answer:
\(0.0004995\ \text{m}^3\)
Explanation:
\(\alpha\) = Coeficiente de expansión lineal = \(3.7\times 10^{-5}\)
\(\Delta T\)= Cambio de temperatura = \((100-70)^{\circ}\text{C}\)
V = Volumen ocupado por alcohol = \(0.15\ \text{m}^3\)
El coeficiente de expansión de volumen está dado por
\(\beta=3\alpha=3\times 3.7\times 10^{-5}\)
El cambio de volumen viene dado por
\(\Delta V=V\beta\Delta T\\\Rightarrow \Delta V=0.15\times 3\times 3.7\times 10^{-5}\times (100-70)\\\Rightarrow \Delta V=0.0004995\ \text{m}^3\)
El volumen aumentará en \(0.0004995\ \text{m}^3\).
why are the periodic trends in electron affinity and ionization energy more similar to each that they are to the trend in atomic radii
On moving from left to right, effective charge increases so the electron affinity increases.
Hence periodic trends of electron affinity and Ionization energy are more similar to each other than they are to the trends in atomic radii.
What is an electron?
An electron is a subatomic particle with a negative one elementary electric charge.Electrons belong to the first generation of the lepton particle family and are generally considered elementary particles because they have no known constituents or substructure.The mass of an electron is approximately 1/1836 that of a proton.To know more about electron, click the link given below:
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A chemist is trying to classify an unknown substance as either a metal or nonmetal. What question should the chemist use to help classify the material?
A. Does the material feel hard to the
touch?
B. Does the material feel rough or smooth?
C. Is the material a good conductor or a poor conductor?
D. Will the material float in water?
Please Help me!!!
Answer:
c
Explanation:
metals are good conductors, while non metals are not good conductors
Which experimental setup would let a student investigate the connection between kinetic energy and temperature? (1 point) placing one drop of food coloring in a cup with 60 ml of water at 10",placing one drop of od coloring in a second oup with 60 mL of water at 40°C placing one drop of food coloring in a cup with 50 ml of water at 10" placing one drop of food coloring in a second cup with 100 ml of water al 10" placing one drop of food coloring in a cup with some of water al 10 placing two drops of food coloring in a second cup with 100 ml of water an 100 placing one drop of food coloring in a cup with some of water at 100 placing two drops of food coloring in a second cup with 50 ml of water at To ONO type here to search
Answer:
The correct option is;
Placing one drop of food coloring in a cup with 60 ml of water at 10°, placing one drop of food coloring in a second cup with 60 ml of water at 40°C
Explanation:
The experimental setup that would allow the student investigate the connection between kinetic energy and temperature should be made up of the following characteristics
1) The constant terms for the experiment should be defined, which in this case are
a) The volume of the water which is 60 ml in both subjects of the experiment
2) The definition of the variable that produces the effect that is being monitored, which is the use of the different temperatures in the two experimental subjects
3)The environmental limits of the experiment, which is the water and the food coloring used
Answer:
b/2
Explanation:
There are well over 100 __________________ that exist on Earth
Answer:
species like plants, animals , human etc
Answer:
Dogs, Chocolate, Tvs, Phones.
Explanation:
HELP ASAP PLEASE! PLEASE
FIll in the blank
your answer will be Carbon
I just got help from a friend!
How do mass and type of material affect thermal energy transfer?
Answer:
Temperature, mass, and the type of material are factors that affect the thermal energy of an object.
Material with the higher specific heat will have more thermal energy than material with lower specific heat if they both have the same mass and temperature.
The thermal energy within the thing increases if the temperature remains constant but the object's mass rises.
If two materials have the same mass and temperature, the material with the greater specific heat will have more thermal energy than the material with the lower specific heat.
How does thermal energy transfer depend on the kind of material?
The speed at which thermal energy moves from one end of a substance to another determines thermal conductivity. Insulators transport thermal energy slowly while conductors transfer thermal energy quickly.
The thermal energy within the thing increases if the temperature remains constant but the object's mass rises.
Conduction, convection, or radiation are all ways that thermal energy can be moved from one location to another.
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Draw the electron pair geometry for sulfur tetrafluoride, SF4 What's the name of the molecular shape of sulfur tetrafluoride?
From the structure of SF4 shown, the molecular geometry of the molecule is trigonal bipyramidal.
What is molecular geometry?
The term molecular geometry has to do with the arrangement of the electron pairs in a molecule.
The arrangement of electron pair in a molecule is based on the valence shell electron pair repulsion theory. From the structure of SF4 shown, the molecular geometry of the molecule is trigonal bipyramidal.
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The density of a liquid substance is 0.95 g/mL. Three students calculated the density as 0.56 g/mL. Calculate the percent
error.
Answer:
The answer is 41.05 %Explanation:
The percentage error of a certain measurement can be found by using the formula
\(P(\%) = \frac{error}{actual \: \: number} \times 100\% \\ \)
From the question we have
actual number = 0.95 g/mL
error = 0.95 - 0.56 = 0.39
We have
\(p(\%) = \frac{0.39}{0.95} \times 100 \\ = 41.0526315...\)
We have the final answer as
41.05 %Hope this helps you
Ice at 0.0°C is mixed with 7.30 × 10^2 mL of water at 25.0°C. How much ice must melt to lower the water temperature to 0.0°C? The specific heat capacity of water is 4.186 J/(g·K). Latent heat of fusion for water is 333.7 J/g.
Approximately 35.90 grams of ice must melt to lower the water temperature to 0.0°C.
To solve this problem, we need to calculate the amount of heat that needs to be transferred from the water to the ice in order to lower the water temperature to 0.0°C.
First, let's calculate the initial heat content of the water. The specific heat capacity of water is 4.186 J/(g·K), and the mass of the water can be calculated using its density (1 g/mL) and volume (7.30 × 10^2 mL):
Mass of water = density × volume = 1 g/mL × 7.30 × 10^2 mL = 7.30 × 10^2 g
The initial heat content of the water can be calculated using the formula:
Heat content = mass × specific heat capacity × temperature change
Heat content = 7.30 × 10^2 g × 4.186 J/(g·K) × (25.0°C - 0.0°C) = 7.30 × 10^2 g × 4.186 J/(g·K) × 25.0°C
Next, we need to calculate the amount of heat that needs to be transferred from the water to the ice to lower the water temperature to 0.0°C. This heat transfer occurs during the melting of the ice.
The amount of heat required to melt the ice can be calculated using the formula:
Heat = mass of ice melted × latent heat of fusion
Let's assume that x grams of ice melts. The mass of the ice can be calculated using its density (0.92 g/mL) and volume (same as the volume of water):
Mass of ice = density × volume = 0.92 g/mL × 7.30 × 10^2 mL = 6.716 × 10^2 g
Heat = x g × 333.7 J/g
Now, we need to ensure that the heat transferred from the water to the ice is enough to lower the water temperature to 0.0°C. The heat transferred from the water to the ice is equal to the heat transferred from the water when its temperature drops to 0.0°C:
Heat content of water = Heat transferred to ice
7.30 × 10^2 g × 4.186 J/(g·K) × 25.0°C = x g × 333.7 J/g
Now, we can solve for x:
x = (7.30 × 10^2 g × 4.186 J/(g·K) × 25.0°C) / (333.7 J/g)
x ≈ 35.90 g
Therefore, approximately 35.90 grams of ice must melt to lower the water temperature to 0.0°C.
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Match the letters in the diagram above to the correct term in the list below.
1. Condensation
5. Transpiration
2. Groundwater
6. Precipitation
3. Infiltration
7. Runoff
4. Evaporation
8. Solar Radiation