Final answer:
To find the number of moles of CO₂ produced from 79.0 g of C₃H₈, convert the mass of C₃H₈ to moles and then use the mole ratio from the balanced combustion equation to find the moles of CO₂produced, which is approximately 5.37 moles.
Explanation:
To calculate the number of moles of CO₂ produced from 79.0 g of C₃H₈ (propane), you need the balanced chemical equation for the combustion of propane, which is:
C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
According to this equation, one mole of propane produces three moles of CO₂. First, we need to determine the number of moles of C₃H₈ present in 79.0 g. The molar mass of propane (C₃H₈) is 44.1 g/mol.
To find the moles of propane, we use the formula:
moles of propane = mass (g) / molar mass (g/mol)
moles of propane = 79.0 g / 44.1 g/mol ≈ 1.79 mol
Now, to find the moles of CO₂ produced from the combustion of 1.79 mol of propane:
moles of CO₂ = moles of C3H8 x (3 moles CO₂ / 1 mole C₃H₈)
moles of CO₂= 1.79 mol x 3 ≈ 5.37 mol
Therefore, the combustion of 79.0 g of C₃H₈ will produce approximately 5.37 moles of CO₂.
Because HCl is a strong acid and NaOH is a strong base, the equivalence point of the neutralization reaction occurs at pH ____.
ANSWER: 7
Answer:
yes, 7 is the correct answer.
Answer: 7
Explanation: Just did it.
How many moles of each element are in 1 mole of ammonium nitrate?
This is the formula for ammonium nitrate NH4NO3
Answer:
Of moles of NH4NO3 = 16/80 i.e. 0.2 moles of Ammonium Nitrate. 1 molecule of NH4NO3 contains 1 atom of N. Hence, 1 mole of NH4NO3 would contain 1 mole of Nitrogen atoms and therefore 0.2 moles of NH4NO3 should contain 0.2 moles of Nitrogen atoms.Explanation:
In 1 mole of ammonium nitrate (NH4₄NO₃), there are 2 moles of nitrogen, 4 moles of hydrogen, and 3 moles of oxygen.
The chemically correct formula for ammonium nitrate is NH4₄NO₃. When determining how many moles of each element are in 1 mole of ammonium nitrate, it is important to analyze the formula. Each molecule contains one nitrogen atom from the ammonium ion (NH4₄⁺) and one nitrogen atom from the nitrate ion (NO₃⁻), totaling two moles of nitrogen (N).
Additionally, there are four hydrogen atoms from the ammonium ion and no hydrogen from the nitrate ion, giving us four moles of hydrogen (H). Finally, the nitrate ion contains three oxygen atoms, thus there are three moles of oxygen (O). Therefore, 1 mole of ammonium nitrate consists of 2 moles of nitrogen, 4 moles of hydrogen, and 3 moles of oxygen.
2 Points
Which of the following is described by the equation H2O(l) + heat → H2O(g)?
what does the stonefish eat
Answer: reef fishes, small invertebrates and other marine animals
Explanation: Stonefish prey on reef fishes, small invertebrates and other marine animals which also make their home among the reefs. They're adept ambush predators, relying on their camouflage to lie in wait for their prey, before striking with their huge, powerful jaws, and swallowing their catch whole.
100 Points and Brainliest
A salt solution has a concentration of 200 g/L. How many grams of salt are contained in 500 mL of this solution?
Answer:
100 g
Explanation:
We know the concentration is 200 g/L.
Convert 500mL to L: 500mL/1000mL = 0.5 L
Now, multiply this by 200 to cancel out the L units and get grams:
200 g/L * 0.5 L = 100 g
Thus, the answer is 100 grams.
Hope this helps!
What pressure will be exerted by 0.60 mol of CO2 when its temperature is 25 OC and it is in a 500 mL container?
Answer:
29.3 atm
Explanation:
We need to use the Ideal Gas Law to solve this problem: PV = nRT, where P is pressure, V is volume, n is moles, R is the gas constant, and T is the temperature in Kelvin.
Here, volume is V = 500 mL = 0.500 L; moles is n = 0.60 mol; R is 0.08206 atm/(mol * K); and temperature is T = 25 + 273 = 298 K. Plug these into the equation to solve for P:
P * (0.500 L) = (0.60 mol) * (0.08206 atm/mol * K) * (298 K)
P ≈ 29.3 atm
Hope this helps!
When 100.g Mg3N2 reacts with 75.0 g H2O, what is the maximum theoretical yield of NH3?
Mg3N2(s) + 6H2O (l) → 3Mg(OH)2(aq) + 2NH3(g)
Answer choices:
1280 g
70.8 g
213 g
23.6 g
25.0 g
Answer : The correct option is, 23.6 g
Explanation : Given,
Mass of [tex]Mg_3N_2[/tex] = 100.0 g
Mass of [tex]H_2O[/tex] = 75.0 g
Molar mass of [tex]Mg_3N_2[/tex] = 101 g/mol
Molar mass of [tex]H_2O[/tex] = 18 g/mol
First we have to calculate the moles of [tex]Mg_3N_2[/tex] and [tex]H_2O[/tex].
[tex]\text{Moles of }Mg_3N_2=\frac{\text{Given mass }Mg_3N_2}{\text{Molar mass }Mg_3N_2}[/tex]
[tex]\text{Moles of }Mg_3N_2=\frac{100.0g}{101g/mol}=0.990mol[/tex]
and,
[tex]\text{Moles of }H_2O=\frac{\text{Given mass }H_2O}{\text{Molar mass }H_2O}[/tex]
[tex]\text{Moles of }H_2O=\frac{75.0g}{18g/mol}=4.17mol[/tex]
Now we have to calculate the limiting and excess reagent.
The balanced chemical equation is:
[tex]Mg_3N_2(s)+6H_2O(l)\rightarrow 3Mg(OH)_2(aq)+2NH_3(g)[/tex]
From the balanced reaction we conclude that
As, 6 moles of [tex]H_2O[/tex] react with 1 mole of [tex]Mg_3N_2[/tex]
So, 4.17 moles of [tex]H_2O[/tex] react with [tex]\frac{4.17}{6}=0.695[/tex] moles of [tex]Mg_3N_2[/tex]
From this we conclude that, [tex]Mg_3N_2[/tex] is an excess reagent because the given moles are greater than the required moles and [tex]H_2O[/tex] is a limiting reagent and it limits the formation of product.
Now we have to calculate the moles of [tex]NH_3[/tex]
From the reaction, we conclude that
As, 6 moles of [tex]H_2O[/tex] react to give 2 moles of [tex]NH_3[/tex]
So, 4.17 moles of [tex]H_2O[/tex] react to give [tex]\frac{2}{6}\times 4.17=1.39[/tex] mole of [tex]NH_3[/tex]
Now we have to calculate the mass of [tex]NH_3[/tex]
[tex]\text{ Mass of }NH_3=\text{ Moles of }NH_3\times \text{ Molar mass of }NH_3[/tex]
Molar mass of [tex]NH_3[/tex] = 17 g/mole
[tex]\text{ Mass of }NH_3=(1.39moles)\times (17g/mole)=23.6g[/tex]
Therefore, the maximum theoretical yield of [tex]NH_3[/tex] is, 23.6 grams.
The maximum theoretical yield of NH3 when 100.g Mg3N2 reacts with 75.0 g H2O is 23.6 g, as H2O is the limiting reactant.
Explanation:To determine the maximum theoretical yield of NH3, start by calculating the number of moles for both reactants. The molar mass of Mg3N2 is 100.93 g/mol, so you have 100 g / 100.93 g/mol = 0.991 moles of Mg3N2. The molar mass of H2O is 18.02 g/mol, so you have 75 g / 18.02 g/mol = 4.16 moles of H2O.
According to the stoichiometry of the reaction, Mg3N2 reacts with 6H2O to produce 2NH3. Thus, the moles of H2O is not enough to react with all the moles of Mg3N2, making H2O the limiting reactant. This means that the reaction will stop once all the H2O is consumed.
From the reaction stoichiometry, 6 moles of H2O produce 2 moles of NH3. So, 4.16 moles of H2O will produce (2/6)*4.16 = 1.39 moles of NH3. The molar mass of NH3 is 17.03 g/mol, so the maximum theoretical yield of NH3 is 1.39 moles * 17.03 g/mol = 23.6 g.
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My car has a volume of 2600. L. On a nice spring day, the temperature outside is 20.0 degrees Celsius. If the pressure is 98.5 kPa, how many moles of gas are inside the car?
Answer : The number of moles of gas inside the car is, 105.0 mole.
Explanation :
To calculate the moles of gas we are using ideal gas equation.
[tex]PV=nRT[/tex]
where,
P = Pressure of gas = 98.5 kPa = 0.972 atm (1 atm = 101.3 kPa)
V = Volume of gas = 2600 L
n = number of moles of gas = ?
R = Gas constant = [tex]0.0821L.atm/mol.K[/tex]
T = Temperature of gas = [tex]20^oC=273+20=293K[/tex]
Now put all the given values in above equation, we get:
[tex]0.972atm\times 2600L=n\times (0.0821L.atm/mol.K)\times 293K[/tex]
[tex]n=105.0mol[/tex]
Therefore, the number of moles of gas inside the car is, 105.0 mole.
Eva pumps up her bicycle tire until it has a gauge pressure of 413 kilopascals. If the surrounding air is at standard pressure, what is the absolute pressure in the bicycle tire?
A.33.9 kPa
B.49.7 kPa
C.312 kPa
D.514 kPa
Top guy is wrong↑
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During which stage of the cell cycle dies the cell condense chromosomes and break down the nuclear envelope
Answer:
Prophase
Explanation:
During prophase, the chromosomes condense, the nucleolus disappears, and the nuclear envelope breaks down.
Answer: It should be Prophase I am 100% sure
Compare hydroelectric pumped storage to standard hydroelectric. The process of pumping water to a higher elevation, is equivalent to what
process in nature?
please help me
Pumped storage hydropower is a form of hydroelectric storage and they are used for electric power systems for load balancing.
Explanation:
It is a type of hydroelectric energy storage that contains two water reservoirs at different elevations which generates power in the water moves down through turbine and it takes the power as it pumps water to upper reservoir.
The altitude may diminish the pump's performance based on the principles of specific gravity, atmospheric pressure and oxygen deprivation.
The specific gravity and pressure based on altitudes suggests that water can be pumped up to 26 feet down when operating a pump at sea level because of atmospheric pressure. The depth shows that altitude increases because of decreasing atmospheric pressure. The pump operators are server to locate their pump close to the source of water you are pumping. The elevation impacts to suction lift.
How many moles are in 12:31 grams if cI2?
Answer:
0.18 mol
Explanation:
the explanation is in the picture
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The reaction of C4H8 and Br2 to yield C4H2Br2 represents
Answer:
A Synthesis Reaction
Explanation:
A + B --> AB
Answer:
addition.
Explanation:
EASY POINTS EASY QUESTION
Answer:just come up with somthing
Explanation:
Answer:
Air inside causes this
Explanation:
When it is not open the air is still compressed in it while when it is opened, the air has escaped
An unknown white powder is added to a beaker of water and stirred. The powder disappears after a few seconds. This unknown powder is most likely made up of
Answer: This unknown powder is most likely made up of ionic bond.
Explanation:
An ionic compound is defined as the compound formed due to transfer of electrons between its atoms.
As we know that like dissolves like. Therefore, an ionic compound is readily soluble in a polar solvent like water.
Hence, when an unknown white powder is added to a beaker of water and stirred. The powder disappears after a few seconds because the white powder is ionic in nature and it is made up of ionic bond.
How does human activity affect earth systems, and how can our actions reduce environmental impacts?
Human activity affects Earth systems such as the atmosphere, hydrosphere, lithosphere, and biosphere, resulting in consequences such as climate change, soil erosion, and pollution. To reduce environmental impacts, individuals can conserve energy, reduce waste, use public transportation, and support sustainable practices. Governments and industries can also implement policies and technologies to promote sustainability.
Explanation:Human activity can have significant impacts on Earth systems, including the atmosphere, hydrosphere, lithosphere, and biosphere. For example, the burning of fossil fuels releases greenhouse gases into the atmosphere, contributing to climate change. Deforestation can lead to soil erosion and loss of biodiversity. Pollution from industrial and agricultural activities can contaminate water sources.
To reduce environmental impacts, individuals can take actions such as conserving energy by using energy-efficient appliances, reducing waste by recycling and composting, using public transportation or carpooling to reduce emissions, and supporting sustainable practices such as organic farming. Additionally, governments and industries can implement policies and technologies that prioritize renewable energy sources, promote sustainable land use, and regulate pollution.
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The by-product of the chlorination of an alkane is
The by-product of the chlorination of an alkane is HCl
Explanation:
Chlorination is the process of adding chlorine to drinking water to disinfect it and kill germs. Different processes can be used to achieve safe levels of chlorine in drinking water.Chlorination of alkane gives a mixture of different products. When consider mechanism of alkanes chlorination, free radicals are formed during the reaction to keep the continuous reaction. Different alkyl chloride compounds, extended carbon chains compounds and HCl are formed as products in product mixture.Chlorination byproducts, their toxicodynamics and removal from drinking water.Halogenated trihalomethanes (THMs) and haloacetic acids (HAAs) are two major classes of disinfection byproducts (DBPs) commonly found in waters disinfected with chlorine Chlorine is available as compressed elemental gas, sodium hypochlorite solution (NaOCl) or solid calcium hypochlorite (Ca(OCl)2Answer:
HCl
Explanation:
The absolute mass of a single atom can be obtained by
dividing the molar mass of that atom by what?
Answer:
Molar mass is the mass of a given substance divided by the amount of that substance, measured in g/mol. For example, the atomic mass of titanium is 47.88 amu or 47.88 g/mol. In 47.88 grams of titanium, there is one mole, or 6.022 x 1023 titanium atoms
Explanation:
Answer:
Avogadro's number
Explanation:
(that was the answer in my textbook)
A student is helping his mom make sweet tea. She wants the tea to be very sweet and very strong. Logan knows how to make changes so that they will dissolve better and faster. Which of the following would help make the sweet tea faster?
Question 8 options:
using cold water and letting the sugar cube sit
using crushed sugar, cold water, and letting the sugar sit
using sugar cubes, hot water, and letting the sugar sit
using crushed sugar, hot water, and stirring
A student weighed 0.2440 grams of sample of a recently synthesized cobalt amine bromide compound. After dissolving in 120mL of acidified water, she added 2.55 grams of AgNO3 to precipitate any free Br-. The precipitate was found to weigh 0.3700 grams. Calculate the %Br- in the sample. MW Cl- 35.45 g/mol; MW Br- 79.91 g/mol; MW Ag 107.87 g/mol
The bromine percentage is 49.42 %
Explanation:
Mass of AgBr precipitated = 0.31 g
Molecular weight of AgBr = 187.77 g mol - 1
moles of AgBr = 0.31 g by 187.77 g mol - 1 = 0.0016509 moles
moles of Br ion = 0.0016509 moles
Mass of Br ion = 0.0016509 moles into 79.904 g mol - 1 = 0.1319 g
The Total mass of compound = 0.2669 g
Percentage of bromine = 0.1319 by 0.2669 = 49.42 percent
Hence the bromine percentage is 49.42 %
A sample of krypton has a volume of 6.00 L, and the pressure is 0.960 atm. If the final temperature is 55.0°C, the final volume is 7.70 L, and the final pressure is 1.25 atm, what was the initial temperature of the krypton?
193.38 K was the initial temperature of the krypton.
Explanation:
Data given:
Initial volume of the krypton gas = 6 litres
initial pressure of the krypton gas = 0.960 atm
initial temperature of the krypton gas = ?
final volume of the krypton gas = 7.70 litres
final pressure of the Krypton gas = 1.25 atm
final temperature of the krypton gas = 55 degrees or 273.25+55 = 323.15 K
Applying the Combined Gas Laws:
[tex]\frac{P1V1}{T1} = \frac{P2V2}{T2}[/tex]
Rearranging the equation:
T1 = [tex]\frac{P1V1T2}{P2V2}[/tex]
Putting the value in the equation:
T1 = [tex]\frac{0.960 X 6 X 323.15}{1.25 X 7.70}[/tex]
T1 = 193.38 K
Initial temperature of the krypton gas is 193.78 K
Calculate the number of moles of sodium chloride (NaCl) formed if 0.345
moles of calcium chloride (CaCl2) react.
1 Na2CO3 (aq) + 1 CaCl2 (aq) – 1 CaCO3 (s) + 2 NaCl (aq)
= ________ Moles ?
Answer : The number of moles of [tex]NaCl[/tex] formed are, 0.69 moles.
Explanation : Given,
Moles of [tex]CaCl_2[/tex] = 0.345 mol
Now we have to calculate the moles of [tex]NaCl[/tex]
The balanced chemical equation is:
[tex]1Na_2CO_2(aq)+1CaCl_2(aq)\rightarrow 1CaCO_3(s)+2NaCl(aq)[/tex]
From the balanced reaction, we conclude that
As, 1 mole of [tex]CaCl_2[/tex] react to give 2 moles of [tex]NaCl[/tex]
So, 0.345 mole of [tex]CaCl_2[/tex] react to give [tex]2\times 0.345=0.69[/tex] mole of [tex]NaCl[/tex]
Therefore, the number of moles of [tex]NaCl[/tex] formed are, 0.69 moles.
1 Na₂CO₃(aq) + 1 CaCl₂(aq) → 1 CaCO₃(s) + 2 NaCl(aq) = 0.690 moles.
If 0.345 moles of calcium chloride (CaCl₂) react, it will produce 0.690 moles of sodium chloride (NaCl) based on the balanced chemical equation provided.
This is derived from the 1:2 molar ratio between CaCl₂ and NaCl.To calculate the number of moles of sodium chloride (NaCl) formed from the reaction between calcium chloride (CaCl₂) and sodium carbonate (Na₂CO₃)we can use the balanced chemical equation: 1 Na₂CO₃(aq) + 1 CaCl₂(aq) → 1 CaCO₃(s) + 2 NaCl(aq)We start with the given number of moles of CaCl₂: 0.345 moles.From the balanced equation, we see that 1 mole of CaCl₂ produces 2 moles of NaCl.Therefore, if we have 0.345 moles of CaCl₂, we multiply by 2 to find the moles of NaCl:0.345 moles CaCl₂ × 2 moles NaCl / 1 mole CaCl₂ = 0.690 moles NaCl
So, 0.345 moles of calcium chloride will produce 0.690 moles of sodium chloride.
Correct question is: Calculate the number of moles of sodium chloride (NaCl) formed if 0.345 moles of calcium chloride (CaCl2) react.
1 Na2CO3 (aq) + 1 CaCl2 (aq) – 1 CaCO3 (s) + 2 NaCl (aq) = ________ Moles ?
Which expression is equivalent to (q Superscript 6 Baseline) squared?
q cubed
q Superscript 8
q Superscript 12
q Superscript 36
Answer:
The answer is c
Explanation:
The correct option is C). [tex]\(q^{12}\)[/tex] is equivalent to (q Superscript 6 Baseline) squared.
To find the expression equivalent to [tex]\((q^6)^2\)[/tex], we apply the exponentiation rule:
[tex]\[(q^6)^2 = q^{6 \cdot 2} = q^{12}\][/tex]
Therefore, [tex]\((q^6)^2\)[/tex] is equivalent to [tex]\(q^{12}\)[/tex].
Among the given options:
- [tex]\(q^3\)[/tex] is [tex]\(q^3\)[/tex],
- [tex]\(q^8\)[/tex] is [tex]\(q^8\)[/tex],
- [tex]\(q^{12}\)[/tex] matches [tex]\(q^{12}\)[/tex],
- [tex]\(q^{36}\)[/tex] is [tex]\(q^{36}\)[/tex].
The expression equivalent to [tex]\((q^6)^2\)[/tex] is [tex]\(q^{12}\)[/tex].
How any moles of H2O will be produced from 12.3 moles of HCL reacting with Ca(OH)2?
Answer:
\large \boxed{\text{12.3 mol HCl}}
Explanation:
We need a balanced chemical equation with moles.
2HCl +Ca(OH)₂ ⟶ CaCl₂ + 2H₂O
n/mol: 12.3
The molar ratio is 2 mol H₂O:2 mol HCl.
[tex]\text{Moles of H$_{2}$O} = \text{12.3 mol HCl} \times \dfrac{\text{2 mol H$_{2}$O}}{\text{2 mol HCl}} = \textbf{12.3 mol HCl}\\\\\text{The reaction produces $\large \boxed{\textbf{12.3 mol HCl}}$}[/tex]
Assuming a stoichiometric relationship where 2 moles of HCl react with 1 mole of Ca(OH)₂ to produce 2 moles of H₂O, 12.3 moles of HCl would theoretically produce 12.3 moles of H₂O.
The question is about determining how many moles of H₂O will be produced from 12.3 moles of HCl reacting with Ca(OH)₂. To solve this, it's essential to know the chemical reaction involved. Unfortunately, the reaction between HCl and Ca(OH)₂, which typically forms CaCl₂ and H₂O, is not provided in full detail in the question. However, knowing that HCl reacts with base like Ca(OH)₂ to produce water and a salt, and typically in stoichiometric reactions involving a strong acid like HCl and a strong base like Ca(OH)₂, the ratio often is 2 moles of HCl react with 1 mole of Ca(OH)₂ to produce 2 moles of water (as a simplified approximation). While an exact reaction equation is necessary for a precise answer, if we assume the reaction follows a simple stoichiometry of 2HCl + Ca(OH)₂ → 2H₂O + CaCl₂, then for every 2 moles of HCl, 2 moles of H₂O are produced. Therefore, if 12.3 moles of HCl react completely with an adequate amount of Ca(OH)₂, they would produce 12.3 moles of H₂O, assuming the reaction goes to completion and all the HCl is used.
Small children are occasionally injured when they try to inhale helium from
a compressed helium tank. If a small child tries to transfer the contents of
a 50 L tank of helium at a pressure of 125 atm and a temperature of 20°
C into its lungs, how many moles of gas will it inhale?
Answer:
260 moles of Helium
Explanation:
V = 50L
T = 20°C = (20 + 273.15)K = 293.15K
P = 125 atm
R = 0.082 L.atm / mol. K
n = ?
From ideal gas equation,
PV = nRT
P = pressure of a given gas
V = volume it occupies
n = number of moles
R = ideal gas constant
T = temperature of the gas
PV = nRT
n = PV / RT
n = (125 * 50) / (0.082 * 293.15)
n = 6250 / 24.0383
n = 260.00 moles
The child inhaled 260 moles of Helium
Which of the following individual actions would do the
most to reduce atmospheric methane?
The top individual action to curb atmospheric methane is reducing consumption of meat and dairy, as these industries are primary contributors to methane production. Also, minimising waste production can help, as waste decomposition in landfills generates considerable methane.
Explanation:The most effective individual action to reduce atmospheric methane is to reduce consumption of meat and dairy products. Methane is produced by digestive processes in ruminant livestock, such as cows, sheep, and goats. These animals are typically raised for meat and dairy production, so by reducing our intake, we can help decrease the number of these animals, and thus decrease the amount of methane produced. This also has the effect of reducing the amount of grain required for livestock feed, since less livestock would be raised. This grain could then be used more efficiently to feed humans directly. Additionally, reducing waste production can also help mitigate methane production, because waste decomposition in landfills is another major source of atmospheric methane.
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Reducing livestock agriculture, implementing sustainable grazing practices, and feeding livestock supplements to lower methane production are key actions for reducing atmospheric methane. Additionally, transitioning to clean energy and planting trees can contribute to lowering greenhouse gas concentrations.
Explanation:To reduce atmospheric methane, the most effective individual action would be decreasing livestock agriculture. Livestock, particularly ruminants like cows and goats, have microbiomes that produce methane during digestion. Additionally, implementing sustainable grazing practices and improving pasture management can mitigate carbon sequestration and offset methane emissions. Feed supplement programs that reduce methane production in livestock can also have significant impacts in reducing this potent greenhouse gas emission.
Another approach is to reduce activities that create anaerobic conditions conducive to methanogen growth, such as rice cultivation in flooded fields. Switching to clean energy sources like wind, solar, and hydropower, which do not emit methane, is also an effective strategy to combat global warming. Lastly, planting more trees can help absorb carbon dioxide, another greenhouse gas that works in tandem with methane to increase global temperatures.
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Which statements describe the inheritance of traits? Select three options
Answer:
• All traits are inherited.
• Offspring inherit one allele for a gene from each parent.
• An offspring with two identical alleles for a trait is homozygous.
Which of the following statements is always TRUE for the freezing of water?
A. ΔS > 0
B. ΔS₍surr₎ > 0
C. ΔS₍universe₎ > 0
D. ΔG > 0
The always true statement for the freezing of water is that the entropy change of the universe (ΔSₙₙₕₑ) is greater than zero, signaling a spontaneous process.
Explanation:The statement that is always TRUE for the freezing of water is ΔSₙₙₕₑ > 0. During the freezing process, the system which is the water being frozen, undergoes a decrease in entropy (ΔS < 0) since the water molecules become more ordered. However, the entropy change of the surroundings (ΔSₙₙₕₑ) is positive because the heat rejected during freezing increases the entropy of the surroundings even more. As a result, the entropy of the universe increases (ΔSₙₙₕₑ > 0), making the overall process spontaneous as the second law of thermodynamics predicts that the entropy of the universe should increase in a spontaneous process.
Identify the 2 numbers given for each element
Each element in the periodic table has two numbers. The first is the atomic number that represents the number of protons in the nucleus. The second is the atomic weight that accounts for the average mass of the isotopes of the element.
Explanation:In the periodic table, each element is represented with two numbers. The larger number, usually found on top, is the atomic number, which signifies the number of protons present in the nucleus of the atom. The second number is the atomic weight or atomic mass, which is usually found at the bottom of the element symbol. It represents the average mass of the isotopes of that element, considering their abundance. For instance, for Carbon (C), the atomic number is 6 (protons) and the atomic weight is about 12.01 (protons + neutrons).
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which cells from which parts of the body would likely need to use the most energy in a typical day?
Answer:
The muscle cell need to use most entry in a typical day
The cells that use most of the energy in a typical day are the cells of the brain, the cells of the heart, the cells of the lungs, the muscle cells, etc., and all the involuntary cells use the energy in a typical day because they do so spontaneously.
What is the energy usage of the cells?The body is made up of many different types of cells, some of which are voluntarily active and work while others are involuntarily work and always do their job. Even when a person is not doing much physical activity during the day, the cells of the heart (cardiac cells), brain, lungs, and other organs are constantly functioning and require continuous energy. When more physical work is done in a typical day, muscle cells or skeletal muscles require more energy and use more ATP to complete the work.
Hence The cells that use most of the energy in a typical day are the cells of the brain, the cells of the heart, the cells of the lungs, the muscle cells, etc.
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