To find the osmotic pressure of a 0.75 L solution made with 4.5 g of glucose (C6H12O6) in water at 35°C, follow these steps:
1. Calculate the moles of glucose:
Molar mass of glucose (C6H12O6) = 6(12.01) + 12(1.01) + 6(16.00) = 180.18 g/mol
Moles of glucose = (mass of glucose) / (molar mass of glucose) = 4.5 g / 180.18 g/mol = 0.025 mol
2. Calculate the molarity of the solution:
Molarity = (moles of glucose) / (volume of the solution in L) = 0.025 mol / 0.75 L = 0.0333 mol/L
3. Calculate the osmotic pressure using the formula:
Osmotic pressure (π) = n/V × R × T
where n is the moles of solute (0.025 mol), V is the volume of the solution in L (0.75 L), R is the gas constant (0.08206 L atm/mol K), and T is the temperature in Kelvin (35°C + 273.15 = 308.15 K).
π = (0.0333 mol/L) × (0.08206 L atm/mol K) × (308.15 K) = 0.845 atm
The closest answer is option b. 0.83 atm. Therefore, the osmotic pressure of the solution is approximately 0.83 atm.
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what is the difference between reactibe and non-reactive nitrogen
Reactive nitrogen refers to nitrogen compounds that are chemically active and can participate in various biological and environmental processes, while non-reactive nitrogen refers to nitrogen in unreactive forms, such as molecular nitrogen (N2) or nitrogen gas.
Reactive nitrogen refers to nitrogen compounds that are chemically active and can undergo transformations or participate in various biological and environmental processes. These compounds include ammonia (NH3), nitrate (NO3-), nitrite (NO2-), and organic nitrogen compounds. Reactive nitrogen is involved in essential processes such as nitrogen fixation, nitrification, denitrification, and nitrogen assimilation in living organisms. It plays a vital role in the nitrogen cycle and can have both positive and negative impacts on ecosystems and the environment, depending on the context.
Non-reactive nitrogen, on the other hand, refers to nitrogen in its unreactive forms, primarily as molecular nitrogen (N2) or nitrogen gas. Molecular nitrogen is chemically stable and relatively inert, meaning it does not readily participate in chemical reactions or biological processes. Non-reactive nitrogen is often considered biologically unavailable until it undergoes nitrogen fixation, a process where certain microorganisms convert N2 into reactive forms that can be used by organisms. In summary, reactive nitrogen compounds are chemically active and participate in various processes, while non-reactive nitrogen exists in its unreactive forms, primarily as molecular nitrogen, and requires conversion to reactive forms to be utilized by living organisms.
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It was suggested that, because of the jump in numbers, from chlorine to potassium, there was an element missing between them. Which element was discovered between these elements?
Answer:
Argon
Explanation:
Argon because chlorine is atomic number 17 and potassium is atomic number 19
Argon is between them thank you
A beam of light has a wavelength of 280 nanometers. What is the frequency of the light? Show all work!
A beam of light has a wavelength of 280 nanometers. The frequency of the light is 1.07 × 10¹⁵ Hz.
the information in the question is given as :
wavelength of beam of light = 280 nm
the relation between the frequency and the wavelength is given as :
F = c / λ
where,
F = frequency of the light
c = speed of light
λ = wavelength of light
speed of light , c is = 3 × 10⁸ m/s
substituting all the value in the formula for the frequency, we get:
F = c / λ
F = 3 × 10⁸ / 280 × 10⁻⁹
F = 0.0107 × 10¹⁷ Hz
F = 1.07 × 10¹⁵ Hz
Thus, A beam of light has a wavelength of 280 nanometers. The frequency of the light is 1.07 × 10¹⁵ Hz.
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9. Name the element which has the following numbers of particles:
I
A. iron
B. iodine
C. Helium
D. calcium
E. lead
F. hydrogen
check your periodic table to see if they are correct
atomic number, proton number and electron are the same
to find neutron = mass number - atomic number
list Two examples of seeds that are dispersal by water
Answer:
okay
Explanation:
Coconut, palm, mangroves, water lily, water mint, are a few examples of plants whose seed are dispersed by the water.
What common property do solids and liquids have
Answer:
Solids and liquids are both condensed phases. This means that their atoms, molecules or ions touch.
Explanation:
The pressure on a sample of gas is increased from 1.0 atm to 3.0 atm. If the new volume is 0.52 L, find the original volume.
Answer: 1.56 ATM
Explanation: if we assume temperature is constant, gas obeys
Boyles law pV= constant. Then p1·V1= p2·V2. And V1 = p2V2/p1
= 3.0 atm·0,52 l / 1.0 atm
The initial or original volume of the gas with pressure increased to the given value is 1.56L.
Boyle's lawBoyle's law states that "the volume V of a given quantity of gas is inversely proportional to its pressure P as long as temperature remains constant.
It is expressed as;
P₁V₁ = P₂V₂
Given the data in the question;
Initial pressure P₁ = 1.0atmFinal pressure P₂ = 3.0atmFinal volume V₂ = 0.52LInitial Volume V₁ = ?To determine the initial volume of the gas, we substitute our given values into the expression above.
P₁V₁ = P₂V₂
V₁ = P₂V₂ / P₁
V₁ = ( 3.0atm × 0.52L ) / 1.0atm
V₁ = 1.56Latm / 1.0atm
V₁ = 1.56L
Therefore, the initial or original volume of the gas with pressure increased to the given value is 1.56L.
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in accordance with charles’s law, a gas under constant pressure will ________blank when ________blank.
In accordance with Charles's law, a gas under constant pressure will expand when heated.
Charles's law states that the volume of a fixed amount of gas at constant pressure is directly proportional to its absolute temperature.
As the temperature of the gas increases, the volume of the gas will also increase. Conversely, as the temperature of the gas decreases, the volume of the gas will decrease. This relationship between the volume and temperature of a gas at constant pressure is described by the equation V/T = k, where V is the volume of the gas, T is its absolute temperature, and k is a constant.
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Determine the volume of 0.107 M NaOH required to reach halfway to the stoichiometric point of the titration.
Answer:
Need more information to solve! What is the analyte? Its concentration?
Explanation:
For the molecule allene, h2 c = c = ch2, give the hybridization of each carbon atom. Will the hydrogen atoms be in the same plane or perpendicular planes?
Owing to the fact that allene is not a planar molecule, the hydrogen atoms in the molecule do not lie on the same plane.
What is a plannar molecule?A planar molecule refers to those molecules that lie on same plane. This means that the atoms in the molecules are all arranged along the same plane.
Now we know that the molecule allene is not a planar molecule. Owing to the fact that allene is not a planar molecule, the hydrogen atoms in the molecule do not lie on the same plane. All the carbon atoms present are sp2 hybridized.
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What happens to the hydrogen-hydrogen and nitrogen-nitrogen bonds?
Answer:
hydrogen nitride
Explanation:
since they are bounding they would become a compound, and so it would need to expand
HELP! NEED ASAP
1. A mixture of 11.23 moles of A, 26.50 moles of B, and 45.83 moles of C is placed in a one-liter container at a certain temperature. The reaction is allowed to reach equilibrium. At equilibrium, the number of moles of B is 29.445. Calculate the equilibrium.
(A)- A(g) + B(g) C(g)
(B)- SHOW ALL YOUR STEPS IN THE CALCULATIONS.
The equilibrium constant of the reaction from the calculation that has been done is 0.154
What is the equilibrium constant?The concentrations (or partial pressures) of reactants and products in chemical equilibrium for a specific chemical reaction are related by the equilibrium constant (K), a mathematical equation. It quantifies the degree to which an equilibrium has been reached in a reaction.
We have the equation of the reaction as;
A(g) + B(g) ⇔C(g)
Thus;
Keq = 45.83/11.23 * 26.50
Keq = 0.154
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Please help If You Are Able To. Where do these go?
Answer:
Sorry can't help
Explanation:
Cant help!
How many atoms or molecules are in 5.0 moles of the following?
a. O
b. N
c.MgCl₂
d. C₂H₃NO
Answer:
They all have the same number of molecules or atoms which is 3.011*10²⁴ molecules or atoms.
5 moles of O = 3.011*10²⁴ molecules or atoms
5 moles of N = 3.011*10²⁴ molecules or atoms
5 moles of MgCl2 = 3.011*10²⁴ molecules or atoms
5 moles of C2H3NO = 3.011*10²⁴ molecules or atoms.
Explanation:
a)
5 moles of O = ?
1 mole of any substance is equal to Avogadro's number which is equal to 6.022×10²³molecules or atoms
From the question above,
5 moles of O = 5 × 6.022*10²³ = 3.011×10²⁴atoms or molecules.
b)
5 moles of N
From the same principle or fundamentally stated fact above,
1 mole of any substance = 6.022*10²³molecules or atom
5 moles of N = 5 × 6.024
2*10²³ = 3.011*10²⁴atoms or molecules.
c)
5 moles of MgCl₂
Same principle we used in a and b,
1 mole of any substance = 6.022*10²³ atoms or molecules
5 moles of MgCl2 = 5.0×6.022*10²³ = 3.011*10²⁴ atoms or molecules.
d)
5 moles of C₂H₃NO = ?
1 mole of C₂H₃NO = 6.022*10²³molecules or atoms
5 moles = x molecules or atoms
x = 5 × 6.024
2*10²³ = 3.011*10²⁴ atoms or molecules
What this proves is that no matter the compound, molecule or element, as long as they have equal amount of moles, they'll have the same number of atoms, molecules or particles.
Answer:
a. 3.011x10²⁴ atoms of O in 5 moles.
b. 3.011x10²⁴ atoms of N in 5 moles.
c. 3.011x10²⁴ atoms of MgCl₂ in 5 moles.
d. 3.011x10²⁴ atoms of C₂H₃NO in 5 moles
Explanation:
A mole is defined as the number of atoms in exactly 12.000g of ¹²C.
This number is equal to 6.022x10²³. That means 1 mole is equal to 6.022x10²³.
Thus:
a. O . 5 moles of oxygen (An atom) are:
5 moles O ₓ (6.022x10²³ atoms of O / mole) = 3.011x10²⁴ atoms of O in 5 moles
b. N . Also, 5 moles of nitrogen are:
5 moles N ₓ (6.022x10²³ atoms of N / mole) = 3.011x10²⁴ atoms of N in 5 moles
c. MgCl₂ . Magnesium chloride is a molecule. Again, 1 mole of MgCl₂ contains 6.022x10²³ molecules and 5 moles are:
5 moles MgCl₂ ₓ (6.022x10²³ molecules of MgCl₂ / mole) = 3.011x10²⁴ atoms of MgCl₂ in 5 moles
d. C₂H₃NO. 5 moles of C₂H₃NO are:
5 moles C₂H₃NO ₓ (6.022x10²³ molecules of C₂H₃NO / mole) = 3.011x10²⁴ atoms of C₂H₃NO in 5 moles
As you can see, number of molecules of 1 mole doesn't depend on the nature of the substance.
If the electrons in a collection of hydrogen atoms are raised to the n = 6 excited state, how many different wavelengths of light will be emitted as the atoms relax to their ground state? (a) 16 (b) 15 (c) 12 (d) 10 (e) 1
Answer:
(e) 1
Explanation:
Each atom has some energy levels and each energy level requires an electron to have certain amount of energy to reside in that energy level. Similarly, in order to excite the hydrogen atoms to a state n =6, its electrons must be provided a certain amount of energy that is constant. This energy is provided in form of photons. These photons have a constant wavelength as a result of constant energy. So, when these electrons go back to the ground state, they emit photons of same wavelength to release the energy they absorbed. Hence, only 1 wavelength is produced when atoms relax to their ground state from n = 6.
Therefore, the correct answer will be:
(e) 1
Sulfur dioxide is released when fossil fuels burn. What does sulfur dioxide cause? ASAP PLZ
Answer:
acid rain
Explanation:
When sulfur dioxide combines with water and air, it forms sulfuric acid, which is the main component of acid rain. Acid rain can: cause deforestation.
Give two examples of solutions that you might find or prepare in a kitchen.
Explanation:
solid liquid
solid gas
liquid solid
A solution prepared by dissolving 25.8 mg of benzene (78.11 g/mol) in hexane (86.16 g/mol) and diluting to 250 ml had an absorption peak at 256 nm and an absorbance of 0.266 in a 1.000-cm cell. what is the percent transmittance?
The percent transmittance can be calculated using the formula % Transmittance = (10^(-Absorbance)) x 100% In this case, the absorbance is given as 0.266, so plugging that into the formula we get ,% Transmittance = (10^(-0.266)) x 100% % Transmittance = 62.7% .
As for an explanation, percent transmittance is a measure of how much light passes through a sample compared to the amount that passes through a blank or reference solution. It is calculated by dividing the amount of light that passes through the sample by the amount that passes through the reference solution and multiplying by 100%. In this case, we are given the absorbance of the sample solution, which is a measure of how much light the solution absorbs at a particular wavelength (256 nm in this case). The percent transmittance is then calculated using the formula I provided earlier.
The absorbance (A) is 0.266. We can rearrange the equation above to solve for %T ,%T = 100 * 10^(-A) , Substitute the given absorbance value into the equation: %T = 100 * 10^(-0.266) Now, calculate the percent transmittance ,%T ≈ 45.05
So, the percent transmittance is approximately 45.05%.
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how many electrons does nitrogen need to have a full outer shell
A. A blue hair dye sample was 2.6cm from the pencil line. The water travelled 6.3cm, calculate the Rf. Only type the answer to 2 decimal places.
B. The Rf of purple is 0.58. The solvent travelled 14cm. What distance did the purple ink travel?
C. The Rf of orange is 0.37. The solvent travelled 15.6cm. What distance did the orange ink travel?
Answer:
A. 0.24
B. See the attachment
C. See the attachment
Explanation:
Please find the attachment for detail
Answer:
A. To calculate Rf value:
Rf = distance traveled by blue hair dye / distance traveled by solvent
Rf = 2.6cm / 6.3cm
Rf = 0.41 (to 2 decimal places)
Therefore, the Rf value of the blue hair dye sample is 0.41.
B. To calculate the distance traveled by purple ink:
distance traveled by purple ink = Rf x distance traveled by solvent
distance traveled by purple ink = 0.58 x 14cm
distance traveled by purple ink = 8.12cm (to 2 decimal places)
Therefore, the purple ink traveled 8.12cm.
C. To calculate the distance traveled by orange ink:
distance traveled by orange ink = Rf x distance traveled by solvent
distance traveled by orange ink = 0.37 x 15.6cm
distance traveled by orange ink = 5.77cm (to 2 decimal places)
Therefore, the orange ink traveled 5.77cm.
The second atomic structure YES
No
Answer
The second part of the theory says all atoms of a given element are identical in mass and properties. The third part says compounds are combinations of two or more different types of atoms. The fourth part of the theory states that a chemical reaction is a rearrangement of atoms.
Explanation:
What factors determine the amount of energy stored in a gummy bear, and how do they affect the amount of energy stored?
Some ideas to get you started: Type of bond, number of bonds, etc
Answer:i don’t know
Explanation:i don’t know
3.25 x 10+8 nm2 divide by 6.5 x 10+6 nm =
Answer: 50 nm
Explanation: Two steps:
1. Divide 3.25/6.5 = 0.5
2. Divide 10^8/10^6 = 10^2
nm^2/nm = nm
Combine: 0.5x10^2 nm
or 50 nm
Answer the following Question Down Below...
The mass number of the atom is 21, the atomic number is 9, and the element is Fluorine. There are 9 protons, 9 electrons, 12 neutrons, and the elemental symbol is F.
Properties of an atomFor every atom:
Protons and neutrons are located in the nucleus and the addition of both equals the mass number of atoms.Electrons are located outside the nucleus, in orbitals.Neutral atoms have the same number of electrons and protonsIn the diagram:
Number of electrons = 9
Number of protons = 9
Number of neutrons = 12
Mass number = 12 + 9
= 21
Atomic number = number of protons
= 9
Element with atomic number 9 = Fluorine
Symbol of the element = F
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What marine province contains deep ocean trenches that form along convergent plate boundaries as a result of subduction?
A. Mid-ocean ridge
B. Deep ocean basin
C. Abyssal plain
. Continental margin
Answer:
A.Mid ocean ridge i think
Explanation:
your answer is B my guy
A spherical snowball is melting in such a way that its radius is decreasing at rate of 0.4 cm/min. At what rate is the volume of the snowball decreasing when the radius is 14 cm?
The rate at which the volume of the snowball is decreasing when the radius is 14 cm is approximately -247.11 cm³/min.
We can use the formula for the volume of a sphere, V = (4/3)πr³, to relate the volume V to the radius r.
Taking the derivative of both sides with respect to time t, we get:
dV/dt = 4πr² (dr/dt)
where dV/dt represents the rate of change of volume with respect to time, and dr/dt represents the rate of change of radius with respect to time.
We are given that dr/dt = -0.4 cm/min (negative because the radius is decreasing). We need to find dV/dt when r = 14 cm.
Plugging in the given values, we get:
dV/dt = 4π(14 cm)² (-0.4 cm/min) ≈ -247.11 cm³/min
Therefore, the volume of the snowball is decreasing at a rate of approximately 247.11 cm³/min.
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How does the molecular formula of a compound differ from the empirical formula? Can a compound’s empirical and molecular formulas be the same? Explain.
Which process causes Earth’s surface to warm?
Answer:
The radiation of the Sun's electromagnetic waves
Explanation:
Earth's atmosphere keeps much of the Sun's energy from escaping into space. This process, called the greenhouse effect, keeps the planet warm enough for life to exist.
What are memory B cells and memory T cell
Answer: Memory B and memory T cells are types of lymphocytes.
Explanation:
Memory B cells forms the part of adaptive immune system. These cells develop inside the germinal centers of the secondary lymphoid organs. These cells circulate in the blood. These are produced by the bone marrow and can be found in tonsil and spleen. Memory B cells are responsible for recognizing previous infections with a foreign antigen and prepare antibody against the new infection. Memory T cells recognize the antigen lived in the body for longer and produce quick response against it on second exposure. These are one of the types of T lymphocytes.
The density of aluminum is 2.70 g/mL. If you use 108 g of aluminum foil, what is its volume in mL?
Question 13 options:
0.642 mL
292 mL
40.0 mL
2.50 mL
Answer:
volume =40.0 ml
Explanation:
density = mass/ volume
volume = mass/ density
volume = 108/ 2.70
volume =40.0 ml