Answer: Sediment is important because it often enriches the soil with nutrients. Areas rich in sediments are often also rich in biodiversity. Sedimentary soil is usually better for farming. Deltas and river banks, where much sediment is deposited, are often the most fertile agricultural areas in a region.
3. Calculate the volume of a of .750 M solution containing 67.0 g of KNO3.
Answer : The volume of solution is 0.884 L
Explanation :
Molarity : It is defined as the number of moles of solute present in one litre of solution.
Formula used :
[tex]Molarity=\frac{\text{Mass of solute}}{\text{Molar mass of solute}\times \text{Volume of solution}}[/tex]
Solute is, [tex]KNO_3[/tex]
Given:
Molarity = 0.750 M
Molar mass of [tex]KNO_3[/tex] = 101 g/mole
Mass of [tex]KNO_3[/tex] = 67.0 g
Now put all the given values in the above formula, we get:
[tex]0.750M=\frac{67.0g}{101g/mole\times \text{Volume of solution}}[/tex]
[tex]\text{Volume of solution}=0.884L[/tex]
Therefore, the volume of solution is 0.884 L
Katiana wanted to figure out what type of liquid worked best for growing beans. She watered one with coca-cola, one with lemonade, and one with just water. After one week, she measured how high they had grown. Independent Variable (What I, the scientist test or change) *
Which locations are likely to have subatomic particles that are constantly in motion:
A) 1 and 2
B) 2 and 3
C) 1 and 3
D) 2 and 4
The answer is "2 and 4"
Location 2 and 4 are likely to have subatomic particles that are constantly in motion,thus the correct option is D.
In physics, a subatomic particle is a particle smaller than an atom.According to the Standard Model of particle physics, a subatomic particle can be either a composite particle, which is composed of other particles (for example, a proton, neutron, or meson), or an elementary particle, which is not composed of other particles Particle physics and nuclear physics study these particles and how they interact.
Experiments show that light could behave like a stream of particles (called photons) as well as exhibiting wave-like properties. This led to the concept of wave–particle duality to reflect that quantum-scale particles behave like both particles and waves; they are sometimes called wavicles to reflect this.
Thus, the correct option is D.
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electrictron configuration
Explanation:
So what do you wanna know? The definition?
In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule in atomic or molecular orbitals. For example, the electron configuration of the neon atom is 1s² 2s² 2p⁶, using the notation explained below.
Match the term with the definition. (4 points)
Column A
1.
Liquid
:
Liquid
2.
Plasma
:
Plasma
3.
Solid
:
Solid
4.
Gas
:
Gas
Column B
a.
has lots of space between the charged particles
b.
has lots of space between particles and is easily compressible
c.
flows easily but is difficult to compress
d.
does not flow easily and is difficult to compress
Answer:
1 - does not flow easily and is difficult to compress
2 -does not flow easily and is difficult to compress.
3 -has lots of space between the charged particles.
4-flows easily but is difficult to compress.
Explanation:
Why is the wavelength of 633 nm used to analyze the standard solutions and drink samples?
Group of answer choices
The lower the wavelength, the blue solutions will absorb more light.
Corresponding with orange light, is the wavelength that blue solutions absorb the most.
Corresponding with blue light, is the wavelength that blue solutions absorb the most.
The higher the wavelength, the blue solutions will absorb more light.
Answer:
Corresponding with orange light, is the wavelength that blue solutions absorb the most.
Explanation:
When light is passed through a solution of a particular color, light of other wavelength or color, is absorbed and disappears, whereas the wavelength of light corresponding to the color of that solution is transmitted. The color of light absorbed the most is that which is complementary (opposite it in the color wheel) to the light which is transmitted. In a color wheel, blue is complementary to orange color, red is complementary to green and yellow is complementary to violet.
Therefore, in a blue substance (as in the blue solutions), there would be a strong absorbance of the complementary color of light, orange. Since the wavelength of orange color of light is between 600 - 640 nm, with maximum absorbance of orange light occurring around 633 nm, the wavelength of 633 nm is used to analyze the standard solutions and drink samples.
(a) At what substrate concentration would an enzyme with a kcat of 30.0 s−1 and a Km of 0.0050 M operate at one-quarter of its maximum rate? (b) Determine the fraction of Vmax that would be obtained at the following substrate concentrations [S]: ½Km, 2Km, and 10Km. (c) An enzyme that catalyzes the reaction X ⇌ Y is isolated from two bacterial species. The enzymes have the same Vmax but different Km values for the substrate X. Enzyme A has a Km of 2.0 μM, and enzyme B has a Km of 0.5 μM. The plot below shows the kinetics of reactions carried out with the same concentration of each enzyme and with [X] = 1 μM. Which curve corresponds to which enzyme?
The missing graph is in the attachment.
Answer: (a) [S] = 0.0016M
(b) Vmax = 3V; Vmax = [tex]\frac{3V}{2}[/tex]; Vmax = [tex]\frac{11V}{10}[/tex]
(c) Enzyme A: black graph; Enzyme B = red graph
Explanation: Enzyme is a protein-based molecule that speed up the rate of a reaction. Enzyme Kinetics studies the reaction rates of it.
The relationship between substrate and rate of reaction is determined by the Michaelis-Menten Equation:
[tex]V=\frac{V_{max}[S]}{K_{M}+[S]}[/tex]
in which:
V is initial velocity of reaction
Vmax is maximum rate of reaction when enzyme's active sites are saturated;
[S] is substrate concentration;
Km is measure of affinity between enzyme and its substrate;
(a) To determine concentration:
[tex]0.25V_{max}=\frac{V_{max}[S]}{0.005+[S]}[/tex]
[tex]0.25V_{max}(0.005+[S])=V_{max}[S][/tex]
[tex]0.00125+0.25[S]=[S][/tex]
0.75[S] = 0.00125
[S] = 0.0016M
For a Km of 0.005M, substrate's concentration is 0.0016M.
(b) Still using Michaelis-Menten:
[tex]V=\frac{V_{max}[S]}{K_{M}+[S]}[/tex]
Rearraging for Vmax:
[tex]V_{max}=\frac{V(K_{M}+[S])}{[S]}[/tex]
(b-I) for [S] = 1/2Km
[tex]V_{max}=\frac{V(K_{M}+0.5K_{M})}{0.5K_{M}}[/tex]
[tex]V_{max}=\frac{V(1.5K_{M})}{0.5K_{M}}[/tex]
[tex]V_{max}=[/tex] 3V
(b-II) for [S] = 2Km
[tex]V_{max}=\frac{V(K_{M}+2K_{M})}{2K_{M}}[/tex]
[tex]V_{max}=\frac{V(3K_M)}{2K_M}[/tex]
[tex]V_{max}=\frac{3V}{2}[/tex]
(b-III) for [S] = 10Km
[tex]V_{max}=\frac{V(K_{M}+10K_M)}{10K_M}[/tex]
[tex]V_{max}=\frac{V(11K_{M})}{10K_{M}}[/tex]
[tex]V_{max}=\frac{11V}{10}[/tex]
(c) Being the affinity between enzyme and substrate, the lower Km is the less substrate is needed to reach half of maximum velocity.
Km of enzyme A is 2μM and of enzyme B is 0.5μM.
Enzyme B has lower Km than enzyme A, which means the first will need a lower concnetration of substrate to reach half of Vmax.
Analyzing each plot, notice that the red-coloured graph reaches half at a lower concentration, therefore, red-coloured plot is for enzyme B, while black-coloured plot is for enzyme A
(02.03 MC)
An electron moved from a lower energy level to a higher energy level. What most
likely happened during the transition? (5 points)
1) A random amount of light was released.
2) A fixed amount of energy was absorbed.
-
3) A fixed amount of energy was released.
1
4) A random amount of light was absorbed.
An electron moved from a lower energy level to a higher energy level, and during the transition, a random amount of light was released. Option A
What exactly are these electrons?
An electron is a kind of subatomic particle that has a negative charge. It is possible for it to be free (meaning that it is not associated with the nucleus of any atom) or it may be tied to the nucleus of an atom.
Electrons are sub-atomic particles that may be found in each atom of any chemical element and can occupy different energy levels. These electrons are capable of transitioning between different energy levels.
Electrons may transition from a state with a lower energy level, also known as the ground state, to a state with a higher energy level, also known as an excited state. Alternatively, electrons can transition from a state with a higher energy level to a state with a lower energy level.
When an electron goes from a lower energy level to a higher energy level, the atom takes in more energy, but when the electron moves from a higher energy level to a lower energy level, the additional energy is expelled mostly in the form of light.
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Which of the following is least like the others on the list?
a. Glucose
b. Glycogen
c. Sucrose
d. Catalase
Answer:
catalase
Explanation:
catalase is enzime the rest are glucides
Place each object on the measurement tray, one at a time. Which objects have a mass greater
than 300 grams?
How do you know?
Answer:
The cube
Explanation:
When the cube is put on the triple beam balance it gives the mass of 429.3
What do you notice about the pattern of volcanoes?
Answer:
What patterns do volcanoes form?
Volcanoes occur at convergent plate boundaries were subducting oceanic crust is melted. This magma rises through the crust to form volcanoes and volcanic island arcs. Volcanoes occur at divergent plate boundaries where upwelling magma pushes between plates (rift zones) as the plates move apart.
The principal quantum number for the outermost electrons in a Cl atom in the ground state is ________.
Answer:
The principal quantum number for the outermost electrons in a Cl atom in the ground state is 3.
Explanation:
By using the Pauling distribution the chlorine atom has an electronic set of [tex]3s1^{2}[/tex]
With n=3 for an orbital S, l = 0 , ml = 0 and ms = ± 1/2
Therefore the final answer is 3
The water around you is in three different phases of matter: Select three.
gas
air
solid
liquid
Using the new ordering system, can we change the Lead and Silver rule to simply:
"Lead and silver salts are generally insoluble?" Why or why not?
Answer:
No, we change the Lead and Silver
Explanation:
The freezing temperature of lead decreases around the curves of AO as pure silver is applied to the lead material. Thus, in the case of platinum, AO is the freezing temperature curve of lead. Strong lead is in balance with fluid melting along this gradient (silver in lead solution).
the valency of nitrogen is 3 why
Answer:
The nitrogen atom has 5 electrons in the outermost shell, so it can accept 3 electrons to fulfil the octet structure. Therefore the valency of nitrogen is 3.
What is the Theoretical yeild of CaCO3 from 2 g of CaCl2 and 2.5 g of K2CO3
Answer:
Theoretical yield of CaCO₃ is 2.002 g.
Explanation:
Given data:
Mass of K₂CO₃ = 2.5 g
Mass of CaCl₂ = 2 g
Theoretical yield of CaCO₃ = ?
Solution:
Chemical equation:
K₂CO₃ + CaCl₂ → CaCO₃ + 2KCl
Number of moles of K₂CO₃:
Number of moles = mass/molar mass
Number of moles = 2.5 g/ 138.205 g/mol
Number of moles = 0.02 mol
Number of moles of CaCl₂:
Number of moles = mass/molar mass
Number of moles = 2 g/ 110.98 g/mol
Number of moles = 0.02 mol
Now we will compare the moles of CaCO₃ with K₂CO₃ and CaCl₂.
CaCl₂ : CaCO₃
1 : 1
0.02 : 0.02
K₂CO₃ : CaCO₃
1 : 1
0.02 : 0.02
Theoretical yield of CaCO₃:
Mass = number of moles × molar mass
Mass = 0.02 mol × 100.1 g/mol
Mass = 2.002 g
Theoretical yield of CaCO₃ is 2.002 g.
It takes 15.0 seconds to run 100.0 meters if you run .0500 how many meters will you run
Answer:
150 seconds
Explanation:
What volume of water (in mL) is required to prepare a 3.000 M solution by dissolving 43.83 g of of NaCl.
Select one:
a. 250.0 mL
b. 2500.0 mL
c. 2.50 mL
d. none of these
e. 25.0 mL
Answer:
Option A. 250 mL
Explanation:
From the question given above, the following data were obtained:
Molarity of NaCl = 3 M
Mass of NaCl = 43.83 g
Volume of water =..?
Next, we shall determine the number of mole in 43.83 g of NaCl. This can be obtained as follow:
Mass of NaCl = 43.83 g
Molar mass of NaCl = 23 + 35.5 = 58.5 g/mol
Mole of NaCl =?
Mole = mass/molar mass
Mole of NaCl = 43.83/58.5
Mole of NaCl = 0.749 mole
Next, we shall determine the volume of water required to prepare the solution as follow:
Mole of NaCl = 0.749 mole
Molarity of NaCl = 3 M
Volume of water =..?
Molarity = mole /Volume
3 = 0.749 /volume
Cross multiply
3 × volume = 0.749
Divide both side by 3
Volume = 0.749/3
Volume = 0.25 L
Finally, we shall convert 0.25 L to millilitres (mL). This can be obtained as follow:
Recall:
1 L = 1000 mL
Therefore,
0.25 L = 0.25 L × 1000 mL / 1 L
0.25 L = 250 mL
Therefore, 0.25 L is equivalent to 250 mL.
Thus, the volume of water needed to prepare the solution is 250 mL
Define matrer?
a)Electrical conductivity
b)Anything that takes Iness and space
c) Something that doesn't take up space.
Answer:
if you are asking matter then
Explanation:
Matter is defined as anything that has mass and takes up space (it has volume).
What are differences between Jupiter and Saturn’s moons
Answer: Well one difference is that Jupiter's moons are large and are closer to each other. Also Jupiter has more moons than Saturn.
Explanation:
Answer:
The difference are :
jupiter moon saturn moon
1.jupitor moon has 4 1.saturn moon
moon has 7 moon
Draw the Lewis structure for CF3PCF2 where all fluorines are bonded to a C atom
Answer:
See attached picture.
Explanation:
Hello.
As you can see on the attached picture, this Lewis structure requires all the elements to attain eight electrons after bonding, that is why the phosphorous is bonded with the two carbon atoms via a single bond with the carbon having the three fluorine atoms and a double bond with the carbon having the two carbon atoms.
Such arrangement is due to the fact that:
- P gets eight electrons by obtaining three from the two sided carbon atoms.
- The first carbon gets eight electrons from its initial four, three provided by each surrounding fluorine and one from the central phosphorous.
- Each fluorine gets eight valence electrons from their initial seven and one from the available carbon atoms.
Best regards.
Which atom has the greatest ionization energy?
C
N
O
F
Answer:
helium
The ionization energy decreases from top to bottom in groups, and increases from left to right across a period. Thus, helium has the largest first ionization energy, while francium has one of the lowest.
a pan of boiling water on the stove is
conduction
convection
radiation
4. How many joules of heat energy does it take to burn off 500 000 cal of potato chips?
(1 cal = 4.184 )) Show your work.
Answer:
[tex]2,092,000J[/tex]
Explanation:
Hello.
In this case, we need to perform a unit conversion problem between cal and joule, taking into account that 1 cal equals 4.184 joules of energy, therefore, we write the following proportional factor:
[tex]500,000cal*\frac{4.184J}{1cal}[/tex]
Whereas the 1 cal is written under the line in order to simplify the initial can and the 4.184 J on the line as joules are the required units. Thus, we obtain:
[tex]2,092,000J[/tex]
As the energy required to burn off such amount of energy given of potato chips.
Best regards.
How to convert 118lbs to kg step by step
Answer:
53.524 Kilograms ( kg )Explanation:
Thank you ☺️☺️
You have 100. grams of potassium fluoride (KF). How many moles do you have? (1 mole KF = 58.09 g KF) *
1.00 mole KF
1.50 mole KF
1.72 mole KF
3.57 mole KF
Answer:
I think its 1.72 (:
Explanation:
How do conduction and convection differ? (4 points)
Conduction can move through empty space to transfer heat; convection cannot.
Conduction does not require objects to have direct physical contact; convection does.
Conduction requires objects to have direct physical contact; convection does not.
Conduction transmits heat through electromagnetic waves; convection does not. PLS HELP
Conduction is the transfer of thermal energy through direct contact. Convection is the transfer of thermal energy through the movement of a liquid or gas.
So I think you should go with the 3rd option.
Hope this was helpful.
Answer:
What the other guy said
Explanation:
how much calcium chloride is required to make 1 Liter of a .10M solution?
Answer:
110.91 g of CaCl2
Explanation:
11.9 grams of CaCl₂ is required to make 1 Liter of 0.1M solution.
Calculating the amount of CaCl₂ required:
We first need to calculate the molecular weight of calcium chloride CaCl₂.
The atomic weight of Ca = 40.01
and the atomic weight of Cl₂ = 2×35.45 = 70.90
So, the molecular weight of CaCl₂ = 40.01 + 70.90 = 110.91
This means that 110.91 g of CaCl₂ mixed with enough water will produce 1Liter of 1M solution.
Now, to calculate the amount of CaCl₂ required to make 1 Liter of 0.1M solution we use:
grams of chemical = (molarity of solution in mole/liter) x (MW of chemical in g/mole) x (ml of solution) ÷ 1000 ml/liter
= 0.1 × 110.91 × 1000 ÷ 1000
= 11.09 grams
So, 11.09 grams of CaCl₂ will be used.
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Calculate the density of the following material: 500 kg gold with a volume of 0.026 m³.
Answer:
The answer is 19230.8 kg/m³Explanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question
mass = 500 kg
volume = 0.026 m³
We have
[tex]density = \frac{500}{0.026} \\ = 19230.769230...[/tex]
We have the final answer as
19230.8 kg/m³Hope this helps you
Write out a balanced, molecular equation, total ionic equation, and net ionic equation for each:
1. Mg(NO3)2(aq) + Na2CO3(aq) -->
2. AgNO3(aq) + KCl(aq) -->
3. Al(s) + HCl(aq) -->
4. HNO3(aq) + Na2CO3aq) -->
Answer:
1:MgCO3 (s) + 2 NaNO3
2:agcl(s)+kno3(aq)
3:alcl3(aq)+h2(g)
4:NaNO3 + CO2 + H2O
(not sure abt last one)