Answer: 0.232 atm
Explanation:
The pressure inside the chamber can be calculated using the Ideal Gas Law, which states that PV = nRT.
P = pressure (atm)
V = volume (L)
n = number of moles (assumed to be constant)
R = gas constant (0.0821 L·atm/mol·K)
T = temperature (K)
Since we know the initial and final volume of the marshmallow, we can use the equation:
(P1)(V1) = (P2)(V2)
where P1 and V1 are the initial pressure and volume, and P2 and V2 are the final pressure and volume.
We can plug in the given information:
(1.0 atm)(0.068 L) = (P2)(0.296 L)
Solving for P2, we get:
P2 = (1.0 atm)(0.068 L) / (0.296 L) = 0.232 atm
So the pressure inside the chamber is 0.232 atm.
Photon a. Having characteristics of both a wave and a particle 7. Spectral lines b. A discrete amount of energy 8. Excited c. The range of different types of electromagnetic radiation (light, x-rays, ultraviolet radiation, and so on) 9. Quantum d. States with higher energy than the ground state 10. Electromagnetic spectrum e. Discrete pattern of narrow bands produced by heated gases 11. Wave-particle duality f. A particle of electromagnetic radiation
Photon is particle of electromagnetic radiation , spectral lines are discrete pattern of narrow bands produced by heated gases , excited means states with higher energy than ground state , quantum is discrete amount of energy, electromagnetic spectrum is range of different types of electromagnetic radiation , wave-particle duality is having characteristics of both wave and particle.
What is electromagnetic radiation?The electromagnetic radiation consists of waves made up of electromagnetic field which are capable of propogating through space and carry the radiant electromagnetic energy.
The radiation are composed of electromagnetic waves which are synchronized oscillations of electric and magnetic fields . They are created due to change which is periodic in electric as well as magnetic fields.
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Over the years, the thermite reaction has been used for welding railroad rails, in incendiary bombs, and to ignite solid-fuel rocket motors. The reaction is given below.
Fe2O3(s) + 2 Al(s) 2 Fe(l) + Al2O3(s)
What masses of iron(III) oxide and aluminum must be used to produce 30.0 g iron?
What is the maximum mass of aluminum oxide that could be produced?
a) The mass of the iron III oxide is 43.2 g
b) The mass of aluminum oxide is 13.77 g
What is the mass that is used?We would need to look at the stoichiometry of the reaction as this would help us to begin to understand how to deal with the question that is at hand here.
Number of moles of the iron = 30.0 g/56 = 0.54 moles
If 1 mole of the iron III oxide produces 2 moles of iron
x moles of the iron III oxide would produce 0.54 moles
x = 0.27 moles
Mass of the iron III oxide = 0.27 moles * 160 g/mol
= 43.2 g
Given that the ratio of the iron and the aluminum oxide is 1:1
1 mole of aluminum oxide is obtained for every 2 moles of iron
x moles of the aluminum oxide is produced for 0.27 moles
x = 0.135 moles
Mass of the aluminum oxide = 0.135 moles * 102 g/mol
= 13.77 g
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match the description with the type of water pollution. group of answer choices comes from fertilizers and detergents, leads to eutrophication biodegradable wastes comes from erosion of soils, leads to change in aquatic habitat sediment pollution comes from human and animal waste, yard waste, leads to oxygen depletion nutrient pollution comes from water discharges from industry and vegetation removal along waterways, reduces dissolved oxygen levels [ choose ]
The correct answer is nutrient pollution. Nutrient pollution comes from fertilizers and detergents, and can lead to eutrophication, a process where excess nutrients cause algal blooms, leading to oxygen depletion in the water.
Sediment pollution comes from erosion of soils, which can lead to a change in aquatic habitat. Finally, biodegradable wastes come from human and animal waste, yard waste, and can lead to oxygen depletion.
Nutrient pollution is a major source of water pollution. It occurs when excessive amounts of nutrients, such as nitrates and phosphates, enter waterways from sources such as agricultural runoff, sewage, and industrial effluent. These nutrients can cause an overabundance of algae and aquatic plants, which can lead to oxygen depletion and dangerous algal blooms. This can have serious impacts on aquatic life, as well as drinking water supplies.
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Convert 53.7 μg/mL to lb/ft^3. Label units and report answer with correct number of sig figures.
The conversion of units is a process of changing one unit to another, while preserving the same value.
The conversion of units2.62e-7 lb/ft^3 (3 sig figs)
To convert 53.7 μg/mL to lb/ft^3, we will use the conversion factor of 1 lb/ft^3 = 16,018,000 μg/mL.To begin, we will multiply 53.7 μg/mL by the conversion factor of 16,018,000 μg/mL.53.7 μg/mL * 16,018,000 μg/mL = 860,686,600 μg/mLNext, we will divide the result by 16,018,000 μg/mL to get the answer in lb/ft^3.860,686,600 μg/mL ÷ 16,018,000 μg/mL = 53.7 lb/ft^3Therefore, 53.7 μg/mL is equal to 53.7 lb/ft^3. The units of the answer are lb/ft^3 and the answer is rounded to two significant figures.The conversion from micrograms per milliliter (μg/mL) to pounds per cubic foot (lb/ft^3) is not a direct conversion, since they measure different units. To convert from one to the other, we must first convert the given mass of 53.7 μg/mL to pounds.To do this, we can use the conversion of 1 lb = 453,592 μg. This means that 53.7 μg/mL is equivalent to 0.0001185 lb.Next, we must convert from pounds to pounds per cubic foot. To do this, we can use the conversion of 1 lb/ft^3 = 16.02 lb. This means that 0.0001185 lb is equivalent to 0.000743 lb/ft^3.Therefore, the conversion of 53.7 μg/mL to lb/ft^3 is 0.000743 lb/ft^3. This answer should be reported with three significant figures, as the given value of 53.7 μg/mL has three significant figures.To learn more about The conversion of units refer to:
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2KCIO3 --> 2KCI + 302
If 5.0g KCIO3 of is decomposed, how many grams of KCI are producted?
3.6g
7.0g
3.0g
5.0g
If 5.0g KCIO3 of is decomposed, how many grams of KCI are producted?
Answer: 3.6g
10. Calculate the root mean square velocity for each of the following gases: He, Kr, CH4, O2
The temperature is taken as standard temperature of 298 K here. The root mean square velocity of helium gas is 1363.15 m/s and that of Kr gas is 290.6 m/s. the RMS velocity of methane gas is 681.5 m/s and that of oxygen gas is 481.9 m/s.
What is RMS velocity ?The root means square velocity of a gas is given by the equation:
v = √3RT/M
where M is the mass of the gas in Kg.
Mass of He = 4 g = 0.004 Kg
T is taken as 298 K
R = 8.314 J/K mol
v = √(3× 8.314 ×298 /0.004 ) = 1363.15 m/s
Mass of Kr = 83.79 g = 0.088 Kg
v = √(3× 8.314 ×298 /0.088 ) = 290.6 m/s
Mass of CH₄ = 16 g = 0.016 Kg
v = √(3× 8.314 ×298 /0.016 ) = 681.5 m/s
Mass of O₂ = 32 g = 0.032 Kg
v = √(3× 8.314 ×298 /0.032 ) = 481.9 m/s
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Can you help me solve number 53?
Difference between the mass in 1 matric ton and 1 english ton is 200 lbs
What is mass ?In physics, mass is a quantitative measurement of inertia, a basic characteristic of all matter. It essentially refers to a body of matter's resistance to changing its speed or location in response to the application of a force. The change caused by an applied force is smaller the more mass a body has.
A body's mass is an inherent quality. Before the discovery of the atom and the field of particle physics, it was conventionally thought to be connected to the amount of matter in a physical body.
1 metric ton is 1000 kg = 2.2 * 10³ lbs
1 english ton is 2 * 10³ lbs
Difference between the mass in 1 matric ton and 1 english ton is
(2.2 * 10³ - 2 * 10³) lbs = 2200 - 2000 = 200 lbs
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in a lewis acid-base reaction, the base an electron pair to the acid. this is an example of a general reaction trend, i.e., that electron-rich species react with electron species.multiple choice question.accepts, deficientaccepts, richdonates, richdonates, deficient
In a Lewis acid-base reaction, the base donates an electron pair to/from the acid. This is an example of a general reaction trend, i.e., that electron-rich species react with electron-deficient species.
Lewis acids are the electron-deficient electrophilic chemical species, which readily accept a pair of electrons, whereas Lewis bases are the electron-rich nucleophilic species. Thus, in the Lewis acid-base reaction, the Lewis base will readily donates an electron pair to the Lewis acid to form a coordinate bond. Thus, it is a kind of chemical reaction where an electron-rich species (Lewis base) will reacts with an electron-deficient species (Lewis acid).
--The given question is incorrect, the correct question is
"In a Lewis acid-base reaction, the base _____ an electron pair to/from the acid. This is an example of a general reaction trend, i.e., that electron-rich species react with electron-_____ species. a) donates, rich b) accepts, deficient c) accepts, rich d) donates, deficient"--
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I need to make 500 mL of a 0.1 M solution of copper sulfate. If I only have 0.4 M solution available, what volume should I initially use?
Answer:
1000 mL
Explanation:
The final volume is 1000 mL means we need to add more 500 mL into the 500 mL of 1.0 M CuSO4 C u S O 4 solution, so we will get 0.5 M solution of CuSO4 C u S O 4 . Thus, 500 mL of water should be added to 500 mL of 1.0 M CuSO4 C u S O 4 solution to dilute it to 0.5 M.
For each of the hydrocarbons, select from the response list on the right the correct molecular formula. Responses may be used more than once or need not be used at all.
a) C6H12
b) C6H14
c) C8H16
d) C8H18
For each of the hydrocarbons, select from the response list on the right the correct molecular formula. Responses may be used more than once or need not be used at all is c) C8H16 the formula of 1-octene which is an alkene compound
Hydrocarbons are complex compounds composed of the elements carbon and hydrogen elements. Hydrocarbon compounds in everyday life can be found in fuel oil and gas. Hydrocarbons are compounds composed of hydrogen atoms (H) and carbon atoms (C).
Alkenes are a group of hydrocarbons that have double bonds, so they are included in unsaturated hydrocarbons. The double bond makes the alkene a more reactive compound. An example of an alkene is C8H16 which is the formula for 1-octene.
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There several major steps in the single-solvent recrystallization experiment. Which of the following are the necessary steps? Select all that applies. Choose the appropriate solvent. Dissolve the solute in the warm solvent using minimum amount of solvent. Performing a gravity filtration and/or vacuum filtration to collect the solute. Dry the solute.
Single-solvent recrystallization is a laboratory technique used to purify solid compounds.
The necessary steps are:
Choose the appropriate solvent: It is important to choose a solvent that has a high solubility for the solute at elevated temperatures and a low solubility at room temperature.
Dissolve the solute in the warm solvent: The solute is dissolved in a minimum amount of the chosen solvent and heated until it is fully dissolved.
Performing a filtration: The mixture is then filtered to separate the solute from any impurities or undissolved solids. Gravity filtration or vacuum filtration can be used.
Dry the solute: Finally, the purified solute is dried by evaporating any remaining solvent.
In summary, the necessary steps for a single-solvent recrystallization experiment are choosing the appropriate solvent, dissolving the solute in the warm solvent, performing a filtration, and drying the solute.
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To make 1.50 L of 0.100 M NaCl from a 3.13 M stock solution, you would need to take (blank) mL of the stock solution and add (blank) mL of water.
To make 1.50 L of 0.100 M NaCl from a 3.13 M stock solution, you would need to take 0.43L of the stock solution and add 0.00106 mL of water.
What is the stock solution ?
To make a stock solution, weigh out an appropriate portion of a pure solid or measure out an appropriate volume of a pure liquid, place it in a suitable flask, and dilute to a known volume.
The precise method of measuring the reagent is find out by the desired concentration unit.
The formula is Cs x Vs = Cd x Vd
Where,
C = concentration, V = volume, s = stock solution, d = dilute solution.
Vs = Cd x Vd / Cs
= .1 M x 1.5 L / 3.48
Vs = .15 / 3.48
= 0.43L
So, your starting volume is .05 L and your dilute solution is 1.5 L, subtract the starting volume to find out how much water was added to make 1.5 L: 1.5 - .0.45 = 1.06 L water
= 0.00106ml
Thus, you would need to take 0.43L of the stock solution and add 0.00106 mL of water.
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What color will a solution of water, glucose, and Benedict's reagent turn?
Answer:
green/yellow if the amount is low and red if it is high.
Explanation:
The solution is blue but, if any carbohydrates are present, it will change color
How many oxygen atoms are in 3.14 mol of NO2?
A.
1.89 x 1024
B.
3.78 x 1024
C.
3.31 x 10-24
D.
1.89 x 10-24
3.4 mol unit 3.78 1024 atom oxygen are present in NO2.
What process produces atoms?Protons, neutrons, and electrons surround the core nucleus of an atom to form the structure of the atom. Uranium fission produces new atoms when it breaks up into smaller particles. The Big Bang and supernovae are two examples of how many atoms were actually created in the real universe.
Which atom do you mean?A chemical element's atoms are the discrete units of matter that define it. An atom's core nucleus is made up of each of them and is surrounded by one or more protons that have negative charges. The positive charges nucleus contains one or more of the relatively heavy protons and neutrons.
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Which is NOT a chemical property of a matter sample?
A. Texture
B. Oxidation
C. Rusting
D. Producing a gas
Answer:
A. Texture
Explanation:
Everything else is a chemical reaction
using the gas solubility interactive and the solid solubility interactive, identify the effects of temperature on the solubility of both a solid and a gas.
Generally, an increase in temperature decreases the solubility of a gas and increases the solubility of a solid.
Basically, solubility is defined as the maximum amount of a substance that will dissolve in a given amount of solvent at a specified temperature. Solubility is a well known characteristic property of a specific solute–solvent combination, and different substances have greatly differing solubilities.
Increasing the temperature will increase the solubility of the solute. This can be proved with an example of a solute whose solubility increases with greater temperature is ammonium nitrate, which can be used in first-aid cold packs.
The gaseous solute's solubility falls because the kinetic energy of the gaseous solute increases as the temperature rises. As a result of this its molecules are more likely to escape the solvent molecule's attraction and return to the gas phase.
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which of the following would you expect to have ionic bonds? responses hbr hbr co co icl icl csf csf nf3
The following would you expect to have ionic bonds are csf.
Cesium fluoride is a substance consisting of different types of cesium element and fluoride element. Cesium is a metal and fluoride is a non-metal. Given that one metallic and one non-metallic bond leads mainly to ionic compounds, we expect cesium fluoride to be an ionic compound. But we need to prove this further by finding the difference in electronegativity of the two elements.
According to the electronegativity table, cesium has an electronegativity of 0.7 and fluorine has an electronegativity of 4.0. Therefore, the difference in electronegativity between the two 3,3s is significant enough to transfer electrons between atoms to form ionic compounds. Therefore, the binding of cesium fluoride compounds is ionic.
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A solution is prepared by dissolving 1.65 g of an unknown organic compound in 15.00 g of cyclohexane. What is the molar mass of the compound if the solution has a melting point of -6.3°C? See the table for information about cyclohexane.
Can anyone help?
The molar mass of the unknown organic compound is approximately 15.0 g/mol.
What is an organic compound?An organic compound can be described as any chemical compound that contains carbon-hydrogen or carbon-carbon bonds.
The molality of the solution can be calculated as follows:
M = moles of solute / mass of solvent (in g)
M = 1.65 g / (molecular weight of solute) / 15.00 g = 0.110 mol/kg
We will use the value of Kf_ for cyclohexane (20.0°C/m), the ΔT can be calculated as follows:
ΔT = Kf_ * m = 20.0°C/m * 0.110 mol/kg = 2.20°C
So the melting point of the solution is:
Tf_ (solution) = Tf_ (pure solvent) - ΔT = 6.6°C - 2.20°C = -0.1°C
The molecular weight of the solute can be calculated as follows:
molecular weight = moles of solute / molality = 1.65 g / (0.110 mol/kg) = 15.0 g/mol
Therefore, we can conclude that the molar mass of the unknown organic compound is approximately 15.0 g/mol.
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Metabolism features many different systems list the systems that play a role below 3 or more
Metabolism features many different systems and the systems that play a role include the following below:
Digestive systemRespiratory systemExcretory system.What is Metabolism?This is referred to as the processes which are used to describe all chemical reactions involved in maintaining the living state of the cells and the organism.
In the case of the digestive system , the different cells and organs present help in the breakdown of large insoluble food molecules into small water-soluble food molecules so that they can be absorbed into the watery blood plasma.
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which of the following is most likely going to participate in hydrogen bonding? group of answer choices ch3nh2 ch3f ch2o ch3cn
CH3NH2 is most likely going to participate in hydrogen bonding.
ABOUT METHYLAMINEMethylamine is an organic compound with the formula CH3NH2. This colorless gas is a derivative of ammonia, but with one hydrogen atom replaced by a methyl group. This compound is the simplest primary amine.
This compound is sold as a solution in methanol, ethanol, tetrahydrofuran, or water, or as anhydrous gas in pressurized metal containers. In industry, methylamine is transported in its anhydrous form in pressurized wagons and tank trucks. This compound has a strong odor like fish. Methylamine is used as a building block for the synthesis of many commercially available compounds.
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A student prepared some deep ruby crystals of "chrome alum" by treating
a solution of potassium dichromate(VI) in dilute sulphuric acid with an
excess of ethanol, and then crystallising the solution formed. What is the
maximum mass of chrome alum crystals that could be made from 2.94 g of
potassium dichromate(VI)?
K₂Cr₂O7 + 4H₂SO4 + 3CH3CH₂OH
potassium dichromate (VI)
→ K₂SO4 + Cr₂(SO4)3 +7H₂O +3CH₂CHO
K₂SO4 + Cr₂(SO4)3 +24H₂O → K₂SO4.Cr2(SO4)3.24H ₂0
"chrome alum"
(H = 1; O=16; S = 32; K= 39; Cr = 52)
The maximum mass of chrome alum crystals that could be made is 9.98g
n = m/M
What is mass?To describe the amount of matter in a body, the word "mass" is used. The kilogramme is the unit of mass used in the SI (kg). At any given time, a body's mass remains constant. only when a body receives or loses a sizable amount of energy, which happens rarely.
n(K₂Cr₂O7) = 2.94g/294g/mol
n(K₂Cr₂O7) = n(K₂SO4) = n(K2SO4 ∗ Cr2(SO4)3 ∗ 24H2O)
m = nM
m(K2SO4 ∗ Cr2(SO4)3 ∗ 24H2O)
= 0.01mol ∗ 998g/mol
= 9.98g
Hence, the maximum mass of chrome alum crystals that could be made is 9.98g
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What is the mole fraction of solute in a 3.69 m aqueous solution?
Molality = [tex]\frac{ Moles of solute}{Kilograms of solvent}[/tex]
X = [tex]\frac{3.69 mol}{3.69 . mol + \frac{1000.g}{18.01.g.mol^{-1} } }[/tex] = 0.062
Explanation:
Mole fraction = X = [tex]\frac{Moles.of .solute }{Moles.of.solute.and.moles.of.solvent}[/tex]
Thus
Moles of solute = 3.69 mol
Moles of solvent = [tex]\frac{1000}{18.01.g.mol^{-1} }[/tex] = 55.5 mol
So, X = 0.062
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a stock solution will be prepared by mixing the following chemicals together: 3.0 ml of 0.00200 m kscn 10.0 ml of 0.200 m fe(no3)3 17.0 ml of 0.5 m hno3 determine the molar concentration of fe(no3)3 in the stock solution. enter this number in the box below. m determine the molar concentration of fe3 in the stock solution. enter this number in the box below. m when written in scientific notation, these numbers should include decimal places.
The molar concentration of Fe(NO3)3 in the stock solution is 0.0634 M, written in scientific notation as 6.34 x 10-2 M.
To calculate the molar concentration of Fe(NO3)3 in the stock solution , you must first calculate the total moles of Fe(NO3)3 present. This can be done by multiplying the volume of Fe(NO3)3 by its concentration. Therefore, the total moles of Fe(NO3)3 present is 10.0 ml x 0.200 M = 2.00 moles.
Next, the total volume of the stock solution must be found. This can be done by adding the volumes of all components, which in this case is 3.0 ml + 10.0 ml + 17.0 ml = 30.0 ml. Finally, the molar concentration of Fe(NO3)3 can be found by dividing the total moles of Fe(NO3)3 by the total volume of the stock solution: 2.00 moles / 30.0 ml = 0.0634 M.
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T/F: A single water molecule can act as a hydrogen bond donor in as many as four hydrogen bonds at the same time.
The given statement, "A single water molecule can act as a hydrogen bond donor in as many as four hydrogen bonds at the same time" is true because a single water molecule is capable of forming four hydrogen bonds at a time.
Each water molecule are capable of forming two hydrogen bonds involving their hydrogen atoms plus two further hydrogen bonds utilizing the hydrogen atoms attached to neighboring water molecules. These four hydrogen bonds then, optimally arrange themselves tetrahedrally around each water molecule as found in ordinary ice.
The nitrogen atom is defined as the hydrogen bond acceptor, because it is "accepting" the hydrogen from the oxygen. We can observe that, the oxygen of the water molecule is the hydrogen bond donor. The oxygen of water molecule is the hydrogen bond acceptor.
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In general, the materials termed 'composites' and 'ceramics' have______ arrangement of their atoms.
A. Orderly
B. Amporphus
C. Lined-up
D. Branched
Answer:
I think it is B or I am not sure hope it helps
calculate the formal charge on each of the atoms in the Lewis structure given. H-O-N=O (nitrous acid) H=? N=? O (of OH)=? O=?
In the Lewis structure for nitrous acid (H-O-N=O), the formal charge of each atom is as follows:
Hydrogen (H): 0Nitrogen (N): +1Oxygen (O) of OH group: -1Oxygen (O) of N=O group: -1A Lewis structure, also known as a Lewis dot diagram, is a diagram that shows the arrangement of atoms in a molecule or ion. It is based on the idea that electrons in a covalent bond are shared equally between the two atoms involved.
The Lewis structure uses dots (representing electrons) to show the bonds between the atoms and the lone pairs (unpaired electrons) of electrons around the atoms. By counting the total number of dots around an atom, you can determine the number of electrons in the outermost shell of the atom, and thus its oxidation state. Lewis structures are useful for understanding the bonding and structure of molecules and ions.
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Determine the average density if the results for three trials were: 3.5512 g/mL, 3.4188 g/mL and
3.8617 g/mL.
The average density of three trials are 3.61 g/mL
It is given that
Density in first trial d1 = 3.5512 g/mL
Density in second trial d2 = 3.4188 g/mL
Density in first trial d3 = 3.8617 g/mL
We have to find average density
Density is a measurement that compares the amount of matter an object has to its volume. An object with much matter in a certain volume has high density. An object with little matter in the same amount of volume has a low density.
Average density = sum of all density/number of density
Average density = d1 + d2 + d3
3
Average density =
3.5512 + 3.4188 + 3.8617
3
= 3.61 g/mL
Hence, average density of three trials are 3.61 g/mL
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A soft gel capsule contains 700 mcg
of vitamin A. How many grams of vitamin A are present?
Use 2 significant figures.
Answer: .00070 g
Explanation:
Start with what you are given and then use conversion factors to find grams.
1000 mcg = 1 mg
1000 mg = 1 g
700 mcg x (1 mg/1000mcg) x (1 g/1000 mg) = .00070 g
complete the following nuclear equations
please help asap
Nuclear equations, the symbol has two numbers associated to it. The mass number, often called the "A" number, is in the upper right corner.
Nuclear equations – what are they?Radiation decay, nuclear fusion, and nuclear fission are all represented by nuclear equations, which show the reactants and products. Atomic mass and proton number are conserved in nuclear reactions, as opposed to chemical equations, which demonstrate that the number of distinct elements is conserved in a reaction.The symbol has two numbers associated to it. The mass number, often called the "A" number, is in the upper right corner. The protons and neutrons in the atom's nucleus are counted and the atom's atomic weight is indicated by the letter "A."The symbol has two numbers associated to it. The mass number, often called the "A" number, is in the upper right corner.The complete question is,
Write nuclear equations in what format?
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how many liters of h2 gas are in 37.3 grams of h2?
