What is the role a species can assume in an ecosystem?
Answers
Answer:
A niche is the role a species plays in the ecosystem. In other words, a niche is how an organism “makes a living.” A niche will include the organism's role in the flow of energy through the ecosystem.
Explanation:
Related Questions
Describe what occurs when a metal is placed into an acid and the equation and what is occurring within it
Answers
When a metal is placed into an acid, a chemical reaction called a redox reaction occurs. In this process, the metal loses electrons (oxidation) and the acid gains electrons (reduction). This results in the formation of a salt and hydrogen gas is released. The general equation for this reaction is:
Metal + Acid → Salt + Hydrogen gas
For example, when zinc is placed into hydrochloric acid, the reaction is:
Zn(s) + 2HCl(aq) → ZnCl₂(aq) + H₂(g)
In this reaction, zinc is oxidized to form zinc chloride (ZnCl₂) while hydrogen ions (H⁺) in the hydrochloric acid are reduced to form hydrogen gas (H₂).
The release of hydrogen gas can be observed as bubbles forming in the solution. This process demonstrates the reactivity of metals with acids, which depends on the metal's position in the reactivity series.
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wsphorus-SL 3. In the isotope B-11, what does the 11 represent?
Answers
Answer:
Here boron-11 means the name of the element is boron and the mass number is 11
Explanation:
Which list arranges the elements Na, Li, K, Rb, and Cs in order of increasing lonization energy (from left to right)?
A)Cs, Rb; K; Na; Li
B)Cs; Li, Na, K; Rb
C)Na, Li; K; Rb; Cs
D)Li, Na, K; Rb; Cs
Answers
The elements Na, Li, K, Rb, and Cs in order of increasing ionization energy is Li, Na, K, Rb, Cs. The correct answer is option D.
What is ionization energy?
The ionization energy is the minimum energy which is required to remove a valence electron from an isolated gaseous atom, molecule or a positive ion. This measures the ability of an atom to form an ion by losing an electron to take part in a chemical reaction.
As we move down the group, the ionization energy decreases due to the increase in the atomic size of an element. So, the electrons are far from the nucleus and loosely bound to the nucleus.
Therefore, it is easy to remove an electron from the elements which are found lower in the group. So, the order of increasing ionization energy is Li, Na, K, Rb, Cs, the correct answer is option D.
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a) C8H18
Name the organic compound
Answers
Answer:
Explanation:
Octane
Octane is a straight chain alkane composed of 8 carbon atoms.
Can someone answer this, NO ROBOTS!!!!
Answers
Genetic engineering improved the lives if individuals with insulin because it helps the body use and store sugar, since people with diabetes can't produce insulin.
Which reaction occurs at the anode of a galvanic cell that has a zinc
electrode in an electrolyte with zinc ions and a copper electrode in an
electrolyte with copper ions? The reduction potential for the reduction of Cu2+
= 0.34 V. The reduction potential for the reduction of Zn2+ = -0.76 V.
A. Zn(s) → Zn2+(aq) + 2e
B. Cu(s) → Cu2+(aq) + 2e
C. Zn2+ (aq) + 2e → Zn(s)
D. Cu2+ (aq) + 2e →
Cu(s)
Answers
Answer: The reaction that occurs at anode is \(Zn(s)\rightarrow Zn^{2+}(aq.)+2e^-\)
Explanation:
Given : \(E^o_{Zn^{2+}/Zn}=-0.76V\)
\(E^o_{Cu^{2+}/Cu}=+0.34V\)
The substance having highest positive reduction potential will always get reduced and will undergo reduction reaction. Here, copper will undergo reduction reaction will get reduced.
The substance having highest negative reduction potential will always get oxidised and will undergo oxidation reaction. Here, zinc will undergo oxidation reaction will get oxidised.
Oxidation reaction occurs at anode and reduction reaction occurs at cathode.
Oxidation half reaction (anode) : \(Zn(s)\rightarrow Zn^{2+}(aq.)+2e^-\)
Reduction half reaction (cathode) : \(Cu^{2+}(aq.)+2e^-\rightarrow Cu(s)\)
Gallium has a simple cubic unit cell. it has a molar mass of 69.72 g/mol and a density of 5.91 g/cm³. How many atoms are contained within the unit cell?
Answers
the unit cell is 8 atoms per cell. Density = 5.91 g / cm³, z = 8 atoms/cell Thus, There are 8 atoms in each unit cell.
How are atoms located in a cell?Add up the all atoms in each place to determine the number of atoms inside the unit cell.The fraction contained within the unit cell will then be multiplied.Inside the cell is an atom's /8 portion that occupies a corner. The unit cell contains four percent of an element that is located on an edge.
Is a face-centered cell two atoms per unit?Four atoms make up each unit cell of the face-centered cubic (fcc), which has a conductivity of 12.Two atoms make up each unit cell of the body-centered cubic (bcc), which has a conductivity of eight.One atom is present in each unit cell of the simple cubic, which has a conductivity of six.
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The atomic masses of 35^Cl (75.53 percent) and 37^Cl (24.47 percent) are 34.968 and 36.956 amu, respectively. Calculate the average atomic mass of chlorine. The percentages in parentheses denote the relative abundances
Answers
An element can have multiple isotopes. Isotopes correspond to variations of the same element with respect to the number of neutrons in its nucleus. the number they give us, 35 and 37 correspond to the mass number of chlorine. The percentage will be how abundant the element is.
To find the average atomic mass we must multiply the mass of the isotope by its respective percentage of abundance and add these two results.
So, the average atomic mass of Cl will be:
\(AtomicMassCl=34.968amu\times75.53\%+36.956amu\times24.47\%\)\(\begin{gathered} AtomicMassCl=26.411amu+9.043amu \\ AtomicMassCl=35.454amu \end{gathered}\)Answer: the average atomic mass of chlorine is 35.454 amu
14. How many individual atoms make up one unit of aluminum chloride, AICI3?
a. 1
b. 3
d. 4
c. 2
Answers
give the systematic name for the compound ba no3 2
Answers
The systematic name for the compound Ba(NO3)2 is barium nitrate. Barium nitrate is an inorganic salt with the chemical formula Ba (NO3)2. It is a colorless, odorless, and crystalline solid that is highly soluble in water. The compound is formed by combining one atom of barium and two ions of nitrate.
The name “barium” comes from the Greek word “barys,” which means “heavy,” and is a reference to its high density. The term “nitrate” refers to the polyatomic ion NO3-, which is composed of one nitrogen atom and three oxygen atoms. Barium nitrate is commonly used in pyrotechnics, as it is a powerful oxidizing agent that produces a bright green flame when ignited.
The systematic naming of inorganic compounds is based on the rules set out by the International Union of Pure and Applied Chemistry (IUPAC). The name of an ionic compound is composed of the cation name followed by the anion name. In the case of barium nitrate, “barium” is the name of the cation, while “nitrate” is the name of the anion.
Therefore, the systematic name for the compound Ba(NO3)2 is barium nitrate.
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A cube of steel with a mass of 150 grams is heated from 60°C to 150°C.
Use calorimetry to determine the amount of energy absorbed by the
metal. The specific heat capacity of steel is 0.466 J/g°C.
Answers
Answer:
1.
The energy lost by the water is given by:
where
m = 3.0 kg = 3000 g is the mass of water
Cs = 4.179 J/g•°C is the specific heat
is the change in temperature
Substituting,
2.
The energy added to the aluminium is given by:
where
m = 0.30 kg = 300 g is the mass of aluminium
Cs = 0.900 J/g•°C is the specific heat
is the change in temperature
Substituting,
4. 42.9 g
The mass of the water sample is given by
where
is the heat added
is the temperature change
Cs = 4.179 J/g•°C is the specific heat
5. 115.5 J
The heat used to heat the copper is given by:
where
m = 5.0 g is the mass of copper
Cs = 0.385 J/g•°C is the specific heat
is the change in temperature
6. 0.185 J/g•°C
The specific heat of iron is given by:
where
Q = -47 J is the heat released by the iron
m = 10.0 g is the mass of iron
is the change in temperature
Substituting,
Substituting,
Substituting,
Explanation:
iron corrodes because _____ turns iron into ions through the process of _____.
Answers
Iron corrodes primarily due to a process called oxidation, which turns iron into iron ions through a series of electrochemical reactions.
In the presence of water and oxygen, iron atoms lose electrons and become positively charged iron ions (Fe²⁺).
These ions then react with oxygen molecules and water to form hydrated iron(III) oxide, commonly known as rust.
This entire process is facilitated by the formation of an electrochemical cell, consisting of an anode and a cathode, on the iron surface. The anode is where oxidation occurs, while the cathode is where reduction happens.
Overall, the corrosion of iron is a natural and spontaneous process driven by the tendency of iron to revert to a more stable, oxidized state.
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Ammonium oxalate solution (NH4)2C204: Ammonium oxalate is soluble in water, and forms ions. When HCl is added, it reacts with the weak base C2042- (aq). Complete the reaction below, be sure to indicate the state of each species in solution: 2NH4+(aq) + C2042-(aq) + 2H+(aq) +2C1-(aq) →
Answers
The reaction between ammonium oxalate (NH4)2C2O4 and hydrochloric acid (HCl) can be represented as: 2NH4+(aq) + C2042-(aq) + 2H+(aq) +2C1-(aq) → 2NH4C2O4(aq) + H2O(l)
In this reaction, the ammonium cation (NH4+) acts as a Lewis base, accepting a proton from the hydrochloric acid (H^+) to form ammonium oxalate (NH4C2O4). The reaction can be represented as a neutralization reaction, where the strong acid (HCl) reacts with the weak base (C2O4^2-). The water molecules (H2O) are formed as a result of the combination of hydrogen cations (H+) and hydroxide anions (OH-).
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Which wave has more energy, the wave at the transmitter or the wave at the receiver? Explain your answer.
Answers
Gamma rays
Gamma rays have the highest energies, the shortest wavelengths, and the highest frequencies. Radio waves, on the other hand, have the lowest energies, longest wavelengths, and lowest frequencies of any type of EM radiation.
Answer:
The wave at the transmitter has more energy. It has higher amplitude, and amplitude is directly related to wave energy.
Explanation:
Edmentum Sample Answer.
You are creating a carbon cycle poster in which direction would you draw arrows to show the movement of carbon through the process of respiration?
A. from the rock to the air
B. from the rock to the grass
C. from the air to the wolf
D. from the wolf to the air
Answers
The concentration of which ion is increased when LIOH is dissolved in water
Answers
Answer:OH^- ion
Explanation: When LiOH added in water then LiOH dissociated in Li+ and OH- . Water is a composition of H+ and OH- ions hence concentration of OH- ions will be increased after adding LiOH.
which of the following pairs of compounds could be separated by chemically active extraction? what reagents would you use? a. ch3ch2co2h and clch2ch2co2h b. phenol and alcohol c. nh and o
Answers
Option-(b) Phenol and alcohol could be separated by chemically active extraction.
In the chemically active extraction ,the compounds are treated with an acid or a base to alter their chemical structure. There are 3 types of chemical extraction. liquid-liquid, liquid-solid and acid base extraction. Acid-base extraction is known as a chemically active extraction.
A phenol is a weak acid.it can lose hydrogen ion when dissolved in water. alcohol is both acid and a base.it reacts with a strong base. The Oxygen atom makes alcohol a base. phenol and alcohol treated with DNA in the process of active extraction.
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What is the molarity of a 50.0ml aqueous solution containing 10.0 grams of hydrogen peroxide H2O2
Answers
Molarity= No of moles of solute * 1000 / vol solution in ml
No of moles= Given mass / Molar mass
Given Mass of solute (H2O2)= 10g
Molar mass of H2O2=34gmol^-1
No of moles= 10/34= 0.294 moles
Volume of solution=50ml
Molarity = 0.294*1000 / 50
Molarity = 5.8M
When determining the mass of product used or reactant consumed, the number of moles must be determined before comparing two substances because a) moles react. b) atoms have the same mass but moles are different for each substance. c) different substances have different masses due to their atomic make-up. d) masses are the same for different substances.
Answers
Answer:
moles react.
Explanation:
In a chemical reaction equation, we know that chemical species react in moles. It is actually the moles of the individual chemical species that participate in a chemical reaction and not the masses of those species.
In solving stoichiometric problems, it is mandatory to use moles as a conversion factor in calculating the mass of product formed or the mass of reactant consumed. We often read off the number of moles that reacted from the balanced reaction equation and then convert the reacting mass of species given to the number of moles of that specie that actually participated in the reaction in order to obtain any required information from a reaction.
Answer:
it is NOT moles react. Just got it wrong on test
Explanation:
Me podrían ayudar con esta tarea porfa, paso a paso se los agradecería muchísimo. -El sulfuro de hidrógeno se quema con oxígeno para dar dióxido de azufre y agua. ¿Cuántos moles de dióxido de azufre se forman a partir de la reacción de 0.250 moles de 2 y 0.300 moles de 2? 2h2s(g)+3o2(g)→2so2(g)+2h2o(g)
Answers
Answer:
0.2 moles de SO₂
Explanation:
La reaccción es:
2H₂S (g) + 3O₂ (g) → 2SO₂ (g) + 2H₂O(g)
Asumimos que tenemos 0.250 moles de sulfuro y 0.3 moles de oxígeno.
En primer lugar tenemos que averiguar el reactivo limitante.
Si 2 moles de sulfuro de hidrógeno reaccionan con 3 moles de oxígeno, según la reacción.
Entonces 0.250 moles, reaccionarían con (0.250 . 3) /2 = 0.375moles
Tenemos entonces 0.3 moles de oxígeno y necesitamos 0.375 (no nos alcanza). Por lo tanto el O₂ es el limitante y ahora podemos calcular el producto formado. La ecuación nos dice:
3 moles de oxígeno pueden producir dos moles de SO₂
Entonces 0.3 moles (que son los que tenemos) de O₂ producirían:
(0.3 . 2) /3 = 0.2 moles de SO₂
The speed of light is about 300,000,000 m/s or 186,000 miles/second. What
parts of the electromagnetic spectrum move at this speed?
Answers
Answer: all of it.
Explanation:
Write the complete electron configuration of the nitrogen atom.
Answers
Answer: [He] 2s2 2p3
We also derived the August equation for the saturation vapour pressure of water (in kPa)
sat R T 298
P =3.17e−Lvap(1− 1 ), (3)
where Lvap = 40.8 kJ/mol and R = 8.314J/mol/K. The air in this room has a relative humidity of about 30% and a temperature of 22◦C. What is vapour pressure of the water in the room?
Answers
The vapor pressure of water in the room can be calculated using the August equation and the given values for temperature and relative humidity.
The August equation provides a way to calculate the saturation vapor pressure of water at a given temperature. In this equation, the vapor pressure (P) is determined using the temperature (T), the latent heat of vaporization (Lvap), and the gas constant (R).
Given a relative humidity of 30% and a temperature of 22°C, we can use the August equation to find the vapor pressure of water in the room. First, we convert the temperature to Kelvin by adding 273.15 (22°C + 273.15 = 295.15 K).
Next, we substitute the values into the equation and solve for P. Using Lvap = 40.8 kJ/mol and R = 8.314 J/mol/K, we can plug in the values to calculate the vapor pressure.
The result will give us the vapor pressure of water in the room, indicating the partial pressure of water vapor in the air at the given temperature and relative humidity.
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in what form do newly synthesized fatty acids primarily exist?
Answers
Newly synthesized fatty acids primarily exist in the form of acyl carrier protein (ACP)-bound intermediates.
During fatty acid synthesis, the growing fatty acid chain is covalently bound to ACP, which serves as a carrier molecule for the elongation cycle. ACP is a small protein that contains a 4'-phosphopantetheine (4'-PP) prosthetic group, which acts as an acyl carrier arm.
The fatty acid intermediates are covalently attached to the 4'-PP group through a thioester bond, allowing for the transfer of the growing fatty acid chain between the active sites of the fatty acid synthase complex.
Once the fatty acid chain is fully elongated, it is released from ACP and can be further modified or incorporated into complex lipids. Therefore, the ACP-bound intermediates are the primary form of newly synthesized fatty acids in the cell.
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1) How many bonds can Sr atom form?
a) 5
c) 3
b) 4
d) 2
Answers
Answer:
the answer is C
Explanation:
it can form 3 bonds
Calculate the amount of heat in kJ
required to increase the temperature of 45.0 grams of H2O from -14°C to 145°C?
SHOW ALL WORK
Answers
Use specific heat of wate as 1kcal/g°C
So
Q=mc∆TQ=45(1)(145+14)Q=45(159)Q=7155calThe amount of heat required to increase the temperature of 45.0 grams of water from -14 °C to 145 °C is approximately 0.030 kJ.
Given to us is.
m = 45.0 grams
ΔT = (145 °C) - (-14 °C) = 159 °C
To calculate the amount of heat required to increase the temperature of a substance, we can use the equation:
q = m × C × ΔT
Where:
q is the amount of heat (in joules)
m is the mass of the substance (in grams)
C is the specific heat capacity of the substance (in joules/gram °C)
ΔT is the change in temperature (in °C)
For water, the specific heat capacity (C) is approximately 4.184 J/g°C.
Converting grams to kilograms:
m = 45.0 grams × (1 kg / 1000 grams) = 0.045 kg
Plugging the values into the equation:
q = 0.045 kg × 4.184 J/g°C × 159 °C
Calculating the amount of heat (q) in joules:
q = 30.00612 J
Converting joules to kilojoules:
q = 30.00612 J × (1 kJ / 1000 J) = 0.030 kJ
Therefore, the amount of heat required to increase the temperature of 45.0 grams of water from -14 °C to 145 °C is approximately 0.030 kJ.
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What does homeostasis refer to
Answers
Answer:
Homeostasis, as currently defined, is a self-regulating process by which biological systems maintain stability while adjusting to changing external conditions.
Explanation:
consider the following reaction. 6na(s) al2o3(s) → 2al(s) 3na2o(s) when 5.52 g of sodium react with excess al2o3(s), 1.00 g of al(s) is produced. what is the percent yield?
Answers
In the given reaction, 6 moles of sodium react with aluminum oxide to produce 2 moles of aluminum and 3 moles of sodium oxide. When 5.52 g of sodium is reacted with excess aluminum oxide, 1.00 g of aluminum is produced.
To calculate the theoretical yield of aluminum, we need to determine the molar mass of sodium (Na) and aluminum (Al). With the molar masses, we can convert the given mass of sodium (5.52 g) to moles. Since the reaction has a 6:2 ratio between sodium and aluminum, we can use stoichiometry to calculate the moles of aluminum produced.
Next, we can convert the moles of aluminum to grams using the molar mass of aluminum. This gives us the theoretical yield of aluminum.
To calculate the percent yield, we divide the actual yield (1.00 g) by the theoretical yield and multiply by 100%.
Percent Yield = (Actual Yield / Theoretical Yield) * 100%
Substituting the values, we can calculate the percent yield.
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describe how to seperate a soluble solid from an insoluble liquid
Answers
Answer:
Separating solids from liquids – filtration
Filtration is a method for separating an insoluble solid from a liquid. When a mixture of sand and water is filtered: the water passes through the filter paper (it becomes the filtrate )
\(The \: techniques \: of \: dissolving, \\ filtration \: and \: evaporation \: are \: used. \\ The \: mixture \: of \: the \\ two \: solids \: is \: added \\ to \: water. \: The \: soluble \: solid \\ is \: allowed \: to \: dissolve \: and \\ the \: insoluble \: solid \: is \: filtered \\ out. \: The \: soluble \: solid \: can \\ then \: be \: obtained \: by \: evaporating \\ the \: water.\)
is this correct? and can you tell me yes or no for each one thanks
Answers
Answer: Yes it's correct.
Explanation: i hoped that helped!!
Answer:
yes this is correctly done