What is the mass of 1.46 × 10^24 atoms of sulfur in grams?77.6 g95.2 g55.4 g4.38 g2.64 g
Answers
Answer: the mass of S contained in 1.46 x 10^24 atoms of this element is 77.6g. The best option to answer the question is letter A.
Explanation:
The question requires us to determine the mass of sulfur contained in 1.46 × 10^24 atoms of this element.
To solve this problem, we can apply the Avogadro's number: it defines the number of particles (ions, atoms, molecules etc.) in one mol of any substance. Then, we'll need to use the atomic mass of sulfur (S) to determine the mass of the number of moles calculated.
According to the Avogadro's number, there are 6.022 x 10^23 atoms of S in 1 mol of this atom. Thus, we can write:
6.022 x 10^23 atoms ------------------------- 1 mol S
1.46 x 10^24 atoms --------------------------- x
Solving for x, we'll have:
\(x=\frac{(1.46\times10^{24}\text{ atoms\rparen}\times(1\text{ mol\rparen}}{(6.022\times10^{23}\text{ atoms\rparen}}=2.42mol\)Therefore, there are 2.42 moles of S in 1.46 x 10^24 atoms of this element.
Now, knowing that the atomic mass of S is 32.065 amu (molar mass = 32.065 g/mol), we can use the following equation to calculate the required mass:
\(number\text{ of moles \lparen mol\rparen = }\frac{mass\text{ \lparen g\rparen}}{molar\text{ mass \lparen g/mol\rparen}}\rightarrow mass\text{ \lparen g\rparen = number of moles \lparen mol\rparen}\times molar\text{ mass \lparen g/mol\rparen}\)\(mass=2.42mol\times32.065g/mol=77.6g\)Therefore, the mass of S contained in 1.46 x 10^24 atoms of this element is 77.6g. The best option to answer the question is letter a.
Related Questions
Which force has an infinite range and is always attractive?
the gravitational force
the weak nuclear force
the electromagnetic force
the strong nuclear force
Answers
Answer:
the gravitational force
Explanation:
this force is the weakest but has an infinite range.
Which force has an infinite range and is always attractive?
the gravitational force
the weak nuclear force
the electromagnetic force
the strong nuclear force
the light emitted by strontium carbonate has a wavelength of 652 nm. calculate the frequency and energy
Answers
The frequency of the light emitted by strontium carbonate is 4.60 x 10 ^ 14 Hz and the energy is 3.05 x 10 ^ - 19 J.
To calculate the frequency and energy of light emitted by strontium carbonate, which has a wavelength of 652 nm. To do this, we'll use the following equations:
1. c = λ * f
2. E = h * f
where c is the speed of light (3.0 x 10^8 m/s), λ is the wavelength, f is the frequency, E is the energy, and h is the Planck's constant (6.63 x 10^-34 Js).
Step 1: Convert the wavelength to meters:
652 nm = 652 x 10^-9 m
Step 2: Calculate the frequency (f) using the first equation:
c = λ * f
3.0 x 10^8 m/s = (652 x 10^-9 m) * f
f = (3.0 x 10^8 m/s) / (652 x 10^-9 m)
f ≈ 4.6 x 10^14 Hz
Step 3: Calculate the energy (E) using the second equation:
E = h * f
E = (6.63 x 10^-34 Js) * (4.6 x 10^14 Hz)
E ≈ 3.05 x 10^-19 J
So, the frequency of the light emitted by strontium carbonate is approximately 4.6 x 10^14 Hz, and its energy is approximately 3.05 x 10^-19 J.
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4. Calculate how many moles of CO, could theoretically be produced when 10 g of glucose reacts. Show your work.
5. Calculate the number of moles of carbon dioxide actually produced. The experiment is conducted at a temperature of 318 K and a pressure of 1.0 atm. The student estimates the volume of the balloon to be 550 mL (0.55 L) after the reaction takes place.
Show your work.
6. Did all the glucose react during the experiment? Justify your answer.
7. If the student's estimate of the balloon's volume was incorrect and the actual volume was 620 mL, would the amount of glucose that actually reacted be more than or less than the amount calculated above? Explain your response.
Answers
Glucose concentration causes yeast to produce more fermentation, but when the saturation gradient is reached, carbon dioxide production stops.
A reaction is what in chemistry?Chemical processes happen when atoms create or dissolve chemical bonds. Products are the molecules that are produced as a result of a chemical reaction, whereas reactants are the ingredients that initiate one.
What is response, for instance?A chemical reaction happens when one or more substances change into one or more new substances. Consider the rust that results from the reaction between iron and oxygen. When vinegar & baking soda are mixed, sodium acetate, nitrous oxide, or water are the results.
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Using the table of average bond energies, estimate the energy needed to break the bonds of the reactants and the energy released when the products from for the reaction N2 + O2 –> 2NO. Note N2 has a triple bond and O2 and NO have double bonds.
Answers
The energy that is released for the breaking of bonds is 229 kJ/mol.
What is the energy released?We should be able to recall that the enthalpy of the reaction taken to be the energy that is evolved or absorbed in the reaction that is ongoing. We have to note that in the course of the reaction there would be the breaking and the making of bonds.
Now we know that;
The bond energy can be given as;
Sum energy of the broken bonds of reactants - Sum of the energy of the formed bonds
Hence;
(945 + 498) - 2(607)
1443 - 1214
= 229 kJ/mol
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how many co2 molecules would be formed from the reaction mixture that produces the greatest amount of products? express the number of molecules as an integer.
Answers
To determine the precise number of CO2 molecules formed in a reaction, it is necessary to consider the specific reactants involved and their stoichiometry in the reaction equation.
Each reaction has its own unique balanced equation, which provides the ratio of reactants and products. However, it is generally true that in combustion reactions involving hydrocarbons or carbon-containing compounds, a significant amount of CO2 is typically produced. This is because the complete combustion of these substances involves the oxidation of carbon atoms, resulting in the formation of CO2.
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CaC2 + 2H2O → C2H2 + Ca(OH)2If 4.8 moles of CaC2 are consumed in this reaction, how many grams of H2O are needed?
Answers
The given reaction is already balanced, that is to say tha the number of atoms in the reactants matches the number of atoms in the products. In the reaction, we can see the relationship between CaC2 and H2O. For each mole of CaC2 two moles of H2O react.
So, if 4.8 moles of CaC2 are consumed the moles of H2O needed will be:
Mol of H2O = Mol of CaC2 x 2
Mol of H2O = 4.8 x 2 = 9.6 mol of H2O
Now, to calculate the grams of H2O we will use the following equation and the mass molar of H2O.
Mass molar of H2O =18.01 g/mol
\(\begin{gathered} \text{Mass of H2O=Mol of H2O }\times Mass\text{ molar of H2O} \\ \text{Mass of H2O = 9.6 mol }\times18.01\frac{\text{ g}}{mol} \\ \text{Mass of H2O = 172.9 g} \end{gathered}\)So, if 4.8 moles of CaC2 are consumed in this reaction, 172.9 g of H2O are needed
If atmospheric pressure measurement for taking at regular intervals from sea level to the stratopause The measurements with most likely show that the pressure
Answers
Answer:
Troposphere
Explanation:
The troposphere is the lowest layer of Earth's atmosphere that extends from under the stratosphere down to the surface of the earth. Nearly all weather condition takes place in the troposphere. The troposphere contains about 75% of the atmosphere's mass and 99% of the total mass of water vapour and aerosols in the atmosphere.
Answer: Pressure decreases.
Explanation:
Atmospheric pressure is termed as the downward force applied by the weight of air against a particular area on Earth's surface. the Standard atmospheric pressure is determined by weighing the column of air occupying 1 square inch on Earth's surface which begins at sea level and moves upward to the uppermost layer of the atmosphere
Measuring the Atmospheric pressure from sea level to the stratosphere,the second layer of the atmosphere which contains the most of the ozone gas show that the pressure decreases
A voltaic cell has a zinc anode and a copper cathode. They are connected by a wire but no salt bridge. What can you predict will happen? A. Without a salt bridge to slow it down the reaction will occur faster than normal. B. The electrons will flow to the zinc anode where a negative charge will build up and eventually halt the reaction. C. None of these D. The electrons will flow to the copper cathode where a negative charge will build up and eventually halt the reaction.
Answers
The prediction is that B. The electrons will flow to the zinc anode where a negative charge will build up and eventually halt the reaction.
What is zinc?This is known as a chemical element, of the periodic table, that is essential to life and is one of the most widely used metals. Zinc is of considerable commercial importance.
Without the salt bridge, positive and negative charges will build up around the electrodes causing the reaction to stop.
Hence, we know that the purpose of the salt bridge is to keep the solutions electrically neutral and allow the free flow of ions from one cell to another.
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PLEASE HELP DUE NOW
how many valance electrons do all of the elements under carbon have?
Answers
Which of the following reactions is correctly balanced?
3 Ca + 1 N2 → Ca3N2
O 2 P2 + 3 H2 → 2 PH3
O 2 HgBr → 1 Hg + 1 Br2
O 2 Sr + 102 — 1 sro
Answers
Methylamine is a weak base with the formula CH3NH2 - (a) In the following box, complete the Lewis electron-dot diagram for a molecule of methylamine. Show all bonding and nonbonding valence electrons.
Answers
In the Lewis electron-dot diagram, nitrogen (N) in methylamine forms three single bonds with hydrogen (H) atoms and one bond with a methyl group (CH3), while having one lone pair of electrons.
In the Lewis electron-dot diagram for methylamine, the central atom is nitrogen (N), which is bonded to three hydrogen (H) atoms and one methyl group (CH3). Here's how you can represent the bonding and nonbonding valence electrons:
Nitrogen (N):
Nitrogen has five valence electrons.
It forms three single bonds with three hydrogen atoms (H), using three of its valence electrons.
Nitrogen also has one lone pair of electrons, representing its nonbonding valence electrons.
Hydrogen (H):
Hydrogen has one valence electron.
Each hydrogen atom is bonded to nitrogen, sharing one electron with nitrogen.
Methyl group (CH3):
The methyl group is bonded to nitrogen.
Carbon (C) in the methyl group has four valence electrons, and each hydrogen (H) in the methyl group has one valence electron.
Carbon forms a single bond with nitrogen, sharing one electron with nitrogen.
Each hydrogen atom in the methyl group is bonded to carbon, sharing one electron with carbon.
Overall, the Lewis electron-dot diagram for methylamine (CH3NH2) would show the bonding of nitrogen with three hydrogen atoms and one methyl group, along with the lone pair of electrons on nitrogen.
Please note that without a visual representation, it's always helpful to refer to a proper diagram or structure for a better understanding of the molecule's Lewis electron-dot diagram.
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what must the ph be if a 10 mm solution of arginine has a net charge of ""-0.65""? use the pka’s given in appendix vii of biochemical calculations.
Answers
The pH needed to achieve a net charge of -0.65 for a 10 mM solution of arginine is 4.02.
We must calculate the pH required to achieve a net charge of -0.65 for a 10 mM solution of arginine.
Using the pKa's given in Appendix VII of Biochemical Calculations, we can calculate that the pH needed is 4.02.
The pH needed to achieve a net charge of -0.65 for a 10 mM solution of arginine is 4.02.
We used the pKa's given in Appendix VII of Biochemical Calculations to calculate the pH needed to achieve a net charge of -0.65 for a 10 mM solution of arginine.
The result of this calculation was a pH of 4.02. The pH needed to achieve a net charge of -0.65 for a 10 mM solution of arginine is 4.02.
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how would you define a system to determine the rate at which an automobile adds carbon dioxide to the atmosphere
Answers
I would determine the rate at which an automobile adds carbon dioxide to the atmosphere by taking an open system, a control volume just around the area of the outlet where the exhaust gases are released. The boundaries are the sides (for example) of the pipe through which the gas is released.
A general study says that a typical passenger vehicle emits about 4.6 metric tons of carbon dioxide per year. This makes possible assumption that the average gasoline vehicle on the road today has a fuel economy of about 22.0 miles per gallon and drives around 11,500 miles per year. Each and every gallon of gasoline burned creates about 8,887 grams of CO₂.
The amount of CO₂ can be calculated by the above given process.
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how many moles of h c l are in 47.3 ml of a 1.65 m h c l solution?
Answers
There are approximately 0.078 moles of HCl in 47.3 mL of a 1.65 M HCl solution.
To determine the number of moles of HCl in a solution, we need to use the equation:moles of solute = concentration of solution x volume of solutionIn this case, we are given the concentration of the HCl solution as 1.65 M (moles per liter), and the volume of the solution as 47.3 mL (milliliters). However, the volume needs to be converted to liters for the calculation to work properly.1 mL = 0.001 L (since there are 1000 mL in 1 L)Therefore, the volume of the solution in liters is:47.3 mL x (1 L/1000 mL) = 0.0473 L.
Now we can plug the values into the equation:moles of HCl = concentration of solution x volume of solutionmoles of HCl = 1.65 M x 0.0473 Lmoles of HCl = 0.077945 molesSo there are approximately 0.078 moles of HCl in 47.3 mL of a 1.65 M HCl solution.
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GIVING BRAINLIEST TO WHOEVER GETS IT RIGHT
Identify the choice that best completes the statement or answers the question. The following paragraph contains an error. Read the entire passage. Then select the option that corrects the error. Most people know that bats can find their way in the dark using echolocation. Bats make a series of high-pitched squeaks. Based on the way these sound waves diffract off objects around it, a bat can form a mental picture of its surroundings. Fewer people realize that humans can also learn to echolocate. A man named Daniel Kish can ride his bike even though he lost his vision at the age of one! Mr. Kish makes a sharp clicking sound with his tongue. By listening to the echoes of the click, he can easily navigate his surroundings.
A. Mr kishs use of echolocation would be limited due to absorption of sound waves
B. Mr kish actually navigates through the use of radar waves, not echolocation
C. in echolocation, bats listen to the way sound waves refract, not diffract
D. In echolocation, bats listen to the way sound waves reflect, not diffract
Answers
Answer:C
Explanation: Done by reading and is best answer option.
humans have a total of 46 chromosomes therefore, humans inherit ____ chromosomes from each parent. (use numerals for the answer)
Answers
Answer:
23
Explanation:
there are 23 pairs of chromosomes
46 individula chromosomes
but each parnet contribute one chromosome to each pair
Answer:
23 :)
Explanation:
acides and basis
50 points,s
only smart people can answer
Answers
Answer:
this is not the full question
\(\\ \rm\Rrightarrow pH=-log[H^+]\)
\(\\ \rm\Rrightarrow pH=-log[2.5\times 10^{-6}]\)
\(\\ \rm\Rrightarrow pH=-log2.5-log10^{-6}\)
\(\\ \rm\Rrightarrow pH=-0.398+6\)
\(\\ \rm\Rrightarrow pH=5.602\)
Acidic as pH<7Consider the combustion of methane (ch)4. suppose 39.8g of ch4 combust according to the following balanced equation. how much heat would be absorbed or produced? h=-890.1kj/mol
Answers
The amount of heat absorbed or produced by the combustion of 39.8 g of CH₄ is 2214 kJ.
The reaction of combustion of methane(CH₄) is as follows:
CH₄ + 2O₂ ⇒ CO₂ + 2H₂O
The ΔH for combustion of methane is given to be -890.1 kJ/mol.
This is the value of heat released when the combustion of 1 mole of CH₄ occurs.
The molar mass of methane is 16 g.
As the heat released by 16g of CH₄ is 890 kJ.
The heat released by 39.8 g of CH₄ is 890/16 x 39.8 = 2214 kJ.
Thus, the amount of heat absorbed or produced by the combustion of 39.8 g of CH₄ is 2214 kJ.
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what are 5 different bases for birds
Answers
Answer:
adenine, guanine, cytosine, thymine, and uracil
Copper(I) nitrate, CuNO3, is dissolved in water and forms a transparent, blue mixture. What type of mixture is it
Answers
Explain the similarities and differences between putting a beaker of ethanoic acid in the refrigerator and mixing it with sodium carbonate
Answers
Answer:
See explanation
Explanation:
When a beaker of ethanoic acid is placed in the refrigerator, its temperature drops and the vessel feels cool.
Now, when we mix ethanoic acid and sodium carbonate, an endothermic reaction occurs, fizzing is observed as carbon dioxide is given off and heat is lost to the surroundings causing the reaction vessel to feel cool to touch.
The difference between putting ethanoic acid in the refrigerator and adding sodium carbonate to the solution is that, in the former, no new substance is formed. The substance remains ethanoic acid when retrieved from the refrigerator. In the later case, new substances are formed. The substance is no more ethanoic acid because a chemical reaction has taken place.
Which is the most complete charge balance expression for a saturated solution of CaC2O4?
a) [Ca^2+] = [C2O4^2-]
b) 2[Ca^2+] = 2[C2O4^2-] + [HC2O4-]
c) [H+] + 2[Ca^2+] = [OH-] + 2[C2O4^2-]
d) [H+] + 2[Ca^2+] = [OH-] + 2[C2O4^2-] + [HC2O4-]
Answers
The most complete charge balance expression for a saturated solution of CaC₂O₄ is [H⁺] + 2[Ca₂⁺] = [OH⁻] + 2[C₂O₄²⁻] + [HC₂O₄⁻] (Option D).
The charge balance must account for all positively charged and negatively charged species in solution. We can only write one complete charge balance for a solution. This expression takes into account the concentrations of all ions present in the solution, including H⁺, OH⁻, Ca²⁺, C₂O₄²⁻, and HC₂O₄⁻. It includes all of the possible ions that can be present in the solution and ensures that the overall charge is balanced.
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calculate the molar concentration of so4 2- in a solution made by dissolving 55.0 grams of al2(so4)3 in enough water to produce 2.00 l of solution.
Answers
The molar concentration of \( {SO_{4}}^{2 - } \) is 2.4
Firstly understanding the concentration \( {SO_{4}}^{2 - } \), which will be 3. Hence, each molecule will release three sulphate ions.
Molar concentration = number of moles ÷ volume of solution in litres
Molar mass of aluminium sulphate = 342 g/mol
Number of moles = 55/342
Performing division
Number of moles = 0.16
Molar concentration = 0.16/2
Performing division
Molar concentration = 0.8
Molar concentration of sulphate ions = 0.8 × 3
Molar concentration of sulphate ions = 2.4
Thus, the molar concentration is 2.4.
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where is the magnitude of force of magnetism the greatest
Answers
Answer:
The strength of the field varies depending on its location around the magnet. The magnetic field of a bar magnet is strongest at either pole of the magnet. It is equally strong at the north pole when compared with the south pole.
Explanation:
Which is a form of matter?
A. electricity
B. energy
C. light
D. water
Answers
Answer:
D
Explanation:
Water is a liquid
Answer:b energy
Explanation: i hope its right
calculate the number of molecules of acetyl-scoa derived from a saturated fatty acid with 22 carbon atoms.
Answers
The number of molecules of acetyl-CoA derived from a saturated fatty acid with 22 carbon atoms is 11.
To calculate this, we need to know that each round of beta-oxidation produces one molecule of acetyl-CoA from a two-carbon unit of the fatty acid chain. In this case, a saturated fatty acid with 22 carbon atoms would go through 11 rounds of beta-oxidation, resulting in the production of 11 molecules of acetyl-CoA.
During beta-oxidation, fatty acids are broken down into two-carbon units that are carried by coenzyme A to the mitochondria, where they are further broken down into acetyl-CoA. The acetyl-CoA then enters the citric acid cycle, which produces energy in the form of ATP. In the case of a saturated fatty acid with 22 carbon atoms, the process of beta-oxidation would produce 11 molecules of acetyl-CoA, which would then enter the citric acid cycle to produce energy for the cell.
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Can someone help me
Answers
Answer:
the moon and sun
Explanation:
Answer:
3rd option
Explanation:
22.1 Assign a name for each of the following compounds: - NH2 N NH2 (a) (Ь) (c) Но, NH2 NH2 N (f) (d) (e)
Answers
(a) Naphthalene: This compound consists of two benzene rings fused together, and the chemical formula is C10H8. The given structure represents one of the benzene rings with an amino group (NH2) attached to one of the carbons.
(b) Benzidine: This compound is a derivative of biphenyl, which consists of two benzene rings connected by a single bond. The given structure represents one of the benzene rings with two amino groups (NH2) attached to two adjacent carbons.
(c) Aniline: This compound is a primary aromatic amine, with the chemical formula C6H5NH2. The given structure represents an amino group (NH2) attached to a benzene ring.
(d) Hydrazine: This compound is a simple inorganic compound with the chemical formula N2H4. The given structure represents two amino groups (NH2) attached to two nitrogen atoms.
(e) Methylamine: This compound is an organic compound with the chemical formula CH3NH2. The given structure represents a methyl group (CH3) attached to an amino group (NH2).
(f) Ethylenediamine: This compound is a type of diamine with the chemical formula C2H8N2. The given structure represents two amino groups (NH2) attached to two adjacent carbon atoms in an ethylene (C2H4) backbone.
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An ethylene glycol solution contains 30.8 g of ethylene glycol (C2H6O2) in 96.6 mL of water. (Assume a density of 1.00 g/mL for water.) Determine the freezing point of the solution. Determine the boiling point of the solution
Answers
The freezing point of the solution is -11.8 °C.
The boiling point of the solution is 103.31 °C.
To determine the freezing point of the solution, we can use the equation:
ΔTf = Kf * m
where:
ΔTf is the freezing point depression,
Kf is the cryoscopic constant (for water, Kf = 1.86 °C/m),
m is the molality of the solution (moles of solute per kilogram of solvent).
First, let's calculate the molality (m) of the solution:
Molar mass of ethylene glycol (C2H6O2):
C = 12.01 g/mol
H = 1.01 g/mol (x 6) = 6.06 g/mol
O = 16.00 g/mol (x 2) = 32.00 g/mol
Total molar mass = 12.01 g/mol + 6.06 g/mol + 32.00 g/mol = 50.07 g/mol
Number of moles of ethylene glycol (C2H6O2) = mass / molar mass
Number of moles = 30.8 g / 50.07 g/mol = 0.615 mol
Mass of water = volume x density = 96.6 mL x 1.00 g/mL = 96.6 g
Now, let's calculate the molality:
Molality (m) = moles of solute / mass of solvent (in kg)
Molality = 0.615 mol / 0.0966 kg = 6.36 mol/kg
Now we can calculate the freezing point depression (ΔTf):
ΔTf = Kf * m
ΔTf = 1.86 °C/m * 6.36 mol/kg = 11.8 °C
To find the freezing point of the solution, subtract the freezing point depression from the freezing point of pure water (0 °C):
Freezing point = 0 °C - 11.8 °C = -11.8 °C
To determine the boiling point of the solution, we can use the equation:
ΔTb = Kb * m
where:
ΔTb is the boiling point elevation,
Kb is the ebullioscopic constant (for water, Kb = 0.52 °C/m),
m is the molality of the solution (same value as calculated before: 6.36 mol/kg).
ΔTb = 0.52 °C/m * 6.36 mol/kg = 3.31 °C
To find the boiling point of the solution, add the boiling point elevation to the boiling point of pure water (100 °C):
Boiling point = 100 °C + 3.31 °C = 103.31 °C
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please name these chemicals.
Answers
Answer: Carbon,Hydrogen, Chlorine
Explanation:
C=Carbon
H=Hydrogen
Cl=Chlorine
Hope this helps :)