The volume of the solution in milliliters, given the data from the question is 104.8 mL
What is molarity?Molarity is defined as the mole of solute per unit litre of solution. Mathematically, it can be expressed as:
Molarity = mole / Volume
How to determine the mole of CuNO₃We'll begin by obtaining the mole of CuNO₃ in the solution. This is illustrated below:
Mass of CuNO₃ = 6.58 gMolar mass of CuNO₃ = 63.55 + 14 + (3×16) = 125.55 g/mol Mole of CuNO₃ =?Mole = mass / molar mass
Mole of CuNO₃ = 6.58 / 125.55
Mole of CuNO₃ = 0.0524 mole
How to determine the volume of the solutionMole of CuNO₃ = 0.0524 mole Molarity of CuNO₃ = 0.5 M Volume = ?Molarity = mole / Volume
0.5 = 0.0524 / volume
Cross multiply
0.5 × volume = 0.0524
Divide both sides by 0.5
Volume = 0.0524 / 0.5
Volume = 0.1048 L
Multiply by 1000 to express in milliliters
Volume = 0.1048 × 1000
Volume = 104.8 mL
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A quantum of energy has an energy of 4.14 x 10-14 J. Find the frequency of this radiation. Show your work.
The frequency of this radiation of a quantum of energy 4.14 *10-14 J is calculated to be 2.58 *10-15 Hz.
The Photoelectric Effect occurs when electrons are released from a metal surface when light strikes it. It was once thought that the greater the intensity of incoming light, the greater its energy, independent of hue. The light was viewed and treated as a wave, however, the wave phenomenon could not explain light's photoelectric actions.
The Quantum, according to Max Planck, is the smallest unit of energy that is released or absorbed in the form of electromagnetic radiation. The energy released or absorbed is proportional to the frequency of the radiation. It may be expressed mathematically as:
E= hc/λ
or
E= hf ( because, f = c/λ)
where,
E= Energy of the particle
h= Planck's constant
c= speed of light
λ= wavelength of the particle
f = frequency of the radiation
Thus, E= hf
Given,
E = 4,14*10-14J
E= 1.71017356 * 10^20 eV
h= 6.626 *10-34 m2Kg/s
E=hf
f= E/h
f= (1.71017356 * 10^20 eV) / (6.626 *10-34 m2Kg/s)
f= C
Thus, the frequency of this radiation is 6.626 *10-34 m2Kg/s.
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the density of lead is 11.342 g/ml. what would be the volume of a 25.00 g sample of this metal?
The volume of the lead is 2.2 mL
What is density?The term density refers to the ratio of the mass to the volume of a body. We know that from the question, the following are the parameters that we have been given;
Density of lead = 11.342 g/ml
Mass of lead = 25.00 g
Volume of lead = ??
We can write that;
Density = mass/volume
Volume = mass/Density
Volume = 25.00 g/ 11.342 g/ml
= 2.2 mL
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Which of the following metals yields the greatest amount of H2 per gram of metal reacting with HCl(aq)?
- Cu
- Na
- K
-Ca
(Without performing detailed calculations)
The metal which yields the greatest amount of H2 per gram of metal reacting with HCl(aq) among the choices given above is Ca ( Calcium)
The correct answer choice from the above is option d.
This goes to say that among all the metals given above, it is calcium that will yields the greatest amount of H2 per gram of metal reacting with HCl(aq).
The balanced equation for the reaction between calcium and hydrochloric acid is given below:
Ca(s) + 2HCl(aq) → CaCl2(aq) + H2(g)
What is meant by metals?
Metals are the electropositive elements of the periodic table with different periodic properties.
Metals are characteristized by the following properties:
They have a very high melting pointThey have high boiling pointMetals also conduct electricity in molten form.Metallic elements also show some periodicities in the periodic table. Some of these periodic properties are:
Melting and boiling pointIonization energyElectron affinityElectrical and thermal conductivityAtomic size and radiusIonic size and radiusSo therefore, the metal which yields the greatest amount of H2 per gram of metal reacting with HCl(aq) among the choices given above is Ca ( Calcium)
The correct answer choice from the above is option d.
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Directions: Provide the chemical name of the given chemical formula.
Chemical Formula
1. Zn(ClO₂)2
2. Mn3N4
3. Na₂SO4
4. CO(NO3)3
5. K(MnO4)
6. N₂Ss
7. P406
8. HCIO(aq)
9. H₂SO3(aq)
10. H3P(aq)
The names of each of the compounds as shown in the question above;
1. [tex]Zn(ClO_{2} )_{2}[/tex] - Zinc II hypochlorite
2. [tex]Mn_{3} N_{4}[/tex] - Manganese IV nitride
3. [tex]Na_{2} SO_{4}[/tex] - Sodium sulfate
4. [tex]CO(NO_{3} )_{3}[/tex] - Cobalt III nitrate
5. [tex]K(MnO_{4} )[/tex] - Potassium permanganate
6. N₂S - Sodium sulfide
7. [tex]P_{4} O_{6}[/tex] - phosphorus trioxide (dimer)
8. HCIO(aq) - hypochlorous acid
9. [tex]H_{2} SO_{3}[/tex](aq) - Sulfurous acid
10. [tex]H_{3} P[/tex](aq) - phosphine
What is a chemical name?We know that in the field of chemistry, the name of a compound is decided by the International Union of Pure and applied Chemistry. This organization gives the general rules that pertain to the naming of chemical compounds. The name of a compound is derived from the elements that are contained in the compound. Sometimes, the oxidation state of the central atom in the compound is an important part of the naming of the compound.
Let us now write the names of each of the compounds as shown in the question above;
1. [tex]Zn(ClO_{2} )_{2}[/tex] - Zinc II hypochlorite
2. [tex]Mn_{3} N_{4}[/tex] - Manganese IV nitride
3. [tex]Na_{2} SO_{4}[/tex] - Sodium sulfate
4. [tex]CO(NO_{3} )_{3}[/tex] - Cobalt III nitrate
5. [tex]K(MnO_{4} )[/tex] - Potassium permanganate
6. N₂S - Sodium sulfide
7. [tex]P_{4} O_{6}[/tex] - phosphorus trioxide (dimer)
8. HCIO(aq) - hypochlorous acid
9. [tex]H_{2} SO_{3}[/tex](aq) - Sulfurous acid
10. [tex]H_{3} P[/tex](aq) - phosphine
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In your opinion, is a food web or a food chain a more accurate representation of how
energy and matter flow in an ecosystem? Explain.
Pls help I will give brainless
Answer: food webs
Explanation: they are more realistic because they show that the producers are usually eaten by many different consumers and most consumers are eaten by more than one predator. A food web is the natural interconnection of food chains and is generally a graphical representation of what-eats-what in an ecological community.
A 45.00-g sample of silver nitrate is mixed with 55.00 g of hydrochloric acid to form a white precipitate of silver chloride. After the solution is filtered and dried, a white precipitate of mass 33.50 g is collected.
a. Determine the limiting reactant.
b. Determine the theoretical yield of silver chloride.
c. Determine the percent yield of silver chloride.
a. The limiting reactant is silver nitrate
b. The theoretical yield of silver chloride is 37.94 grams
c. The percent yield of silver chloride is 88.3%
Stoichiometric problemFirst, let us see the equation of the reaction:
[tex]HCl + AgNO_3 -- > HNO_3 + AgCl[/tex]
The mole ratio of the reactants is 1:1.
Mole of 45 g sample of silver nitrate = 45/170
= 0.2647 moles
Mole of 55 g sample if hydrochloric acid = 55/36.46
= 1.5068 moles
Thus, the limiting reactant is silver nitrate.
Mole ratio of silver nitrate and silver chloride = 1:1.
Equivalent mole of silver chloride = 0.2647 moles
Mass of 0.2647 moles silver chloride = 0.2647 x 143.32
= 37.94 grams
Theoretical yield of silver chloride = 37.94 grams
The percentage yield of silver chloride = 33.5/37.94 x 100
= 88.3%
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64.9 grams of potassium chloride are reacted with excess oxygen to produce potassium chlorate, according to the reaction: KCl + O 2 → KClO 3 If 77.1 grams are produced, what is the percent yield of this reaction?
The percent of the yield of this reaction is 106.7 grams or 72.3%.
The reaction in question is a decomposition reaction. A decomposition reaction is a reaction in which a compound is broken down by the action of heat, light or electrical energy to produce two or more new substances. Here, potassium chlorate decomposes into potassium chloride and oxygen gas. This is the first part of the answer. This 0.506 mol of KCL is formed when 62 g of KCL 03 of Part B is reacted.
To express the efficiency of a reaction the percent yield can be calculated using the following formula: % Yield = Actual Yield/Theoretical Yield x 100. Percent Yield of 90% Rates means 90% and 10% responses. % of material that was efficient was wasted did not react or product was not captured. The yield rate is the difference between the actual amount of product produced and the calculated maximum yield. The formula for percent yield is the experimental yield divided by the theoretical yield and multiplied by 100.
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Classical, alchemical, medical and technological traditions were chemistry's forerunners. Identify the contributions which each of these made to the development of chemistry.
There are many contributions that all the mentioned fields have made to the development of chemistry.
What is the contribution of these fields to chemistry?
When you hear the word "alchemy," you might picture witches watching a pot of boiling liquid or sorcerers working in smokey labs or disorganized libraries. Despite these associations with myth and mysticism, alchemical observations claim to have played a significant part in the advancement of modern science.
In the past, alchemy referred to any study of nature. was an ancient philosophical and theological discipline that merged metalworking and chemistry. Physics, medicine, astrology, mysticism, spiritualism, and art were all included in alchemy.
Alchemy was a sacred practice as well as a scientific discipline. Many of its practitioners have altruistic motives. For instance, alchemists may be able to cleanse humans if they discover the secret to "purifying" base metals into gold. At the same time, alchemy has historically been associated with get-rich-quick schemes and plenty of alchemists have been exposed as frauds and impostors.
Nevertheless, a few alchemists were significant practitioners whose work laid the foundation for modern chemistry and medicine.
Therefore, there are many contributions that all the mentioned fields have made to the development of chemistry.
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Calculate the mass and volume corresponding to 2 mmol of methyl salicylate. The molecular weight of methyl salicylate is 152.1 g/mol and the density of methyl salicylate is 1.174 g/ml
The mass and volume of methyl salicylate present in a 2 mmol sample are 0.3042 g and 0.259 mL respectively.
What is the mass of methyl salicylate in 2 mmol sample?The mass of methyl salicylate present in a 2 mmol sample is determined from the molar mass of methyl salicylate.
mass = number of moles * molar massmolecular weight of methyl salicylate is 152.1 g/mol
number of moles = 2 mmol = 0.002 moles
mass = 0.002 moles * 152.1 g/mol
mass of methyl salicylate = 0.3042 g
Volume is determined from the density and mass
Volume = mass/densityvolume of methyl salicylate = 0.3042 g/ 1.174 g/ml
volume of methyl salicylate = 0.259 mL
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What happens to the potential energy of the molecules in a reaction? A. The reactants only lose potential energy when forming products. B. The potential energy of the molecules changes during a reaction. OC. The potential energy of the molecules does not change in a reaction. D. The potential energy of the products is equal to that of the reactants.
The potential energy of the molecules changes during a reaction.
Potential energy :Potential energy is a form of energy that is stored but is dependent on the relative positions of different system components. Stretching or compressing a shock absorber increases its potential energy. A steel ball has more potential energy when it is raised above the surface of the earth than when it is brought to Earth.
What happens to the potential energy?Potential energy can be transformed into kinetic energy, which is the energy of motion, and then into other forms like electric energy. One of the two types of energy is potential energy, which is the latent energy in an object at rest. Kinetic energy, on the other hand, is the energy that a moving object expresses.
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I would like some assistance on this please
Because it is buoyant, helium floats because its molecules are lighter than those of our atmosphere's nitrogen and oxygen and so they rise above it.
Briefing:The helium balloon moves some air around (just like the empty bottle displaces an amount of water). The balloon will float in the air as long as the combined weight of the helium and balloon fabric is less than the air it replaces. Helium is actually much lighter than air, as it turns out.
Where does helium come from?Two electrons, two protons, and typically two neutrons make up the element helium. It is an inert gas that has no color or smell. Fusion and fission both produce helium as a product. Helium was initially found in the sun's spectrogram in 1868.
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One of the steps in the commercial process for converting ammonia to nitric acid is the conversion of NH3 to NO:
4NH3(g)+5O2(g)→4NO(g)+6H2O(g)
In a certain experiment, 1.55 g of NH3 reacts with 2.05 g of O2.
The mass of nitrogen monoxide is 1.54 g.
What is the amount of NO produced?In this case we have to make use of stoichiometry to obtain the mass of the NO that is produced in the reaction. The balanced reaction equation is;
[tex]4NH_{3} (g) + 5O_{2} (g) ---- > 4NO(g) + 6H_{2} O(g)[/tex]
Mass of ammonia= 1.55 g
Number of moles of ammonia = 1.55 g/17 g/mol = 0.088 moles
Mass of oxygen = 2.05 g
Number of moles of oxygen = 2.05 g/32 g/mol = 0.064 moles
If 4 moles of ammonia reacts with 5 moles of oxygen
0.088 moles of ammonia reacts with 0.088 moles * 5 moles/ 4 moles
= 0.11 moles
Hence oxygen is the limiting reactant.
If 5 moles of oxygen produces 4 moles of nitrogen monoxide
0.064 moles of oxygen produces 0.064 moles * 4 moles / 5 moles
= 0.0512 moles
Mass of nitrogen monoxide = 0.0512 moles * 30 g/mol = 1.54 g
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How many nanometers (nm) are in 2.8 m?
Answer:
2800000000 Nanometers