How the lead (II) carbonate can be separated and collected from the product mixture with ammonium nitrate?

Autotrophs that convert light energy into chemical energy are called phototrophs or photoautotrophs. Photoautotrophs use the process of photosynthesis to convert light energy into chemical energy in the form of organic compounds such as glucose.

These organisms include plants, algae, and some bacteria, such as cyanobacteria.Photosynthesis is the process by which photoautotrophs convert light energy into chemical energy. The process involves two main stages, the light-dependent reactions and the light-independent reactions.

In the light-dependent reactions, light energy is absorbed by chlorophyll and other pigments in the thylakoid membranes of the chloroplasts. This energy is used to produce ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate) which are used in the next stage of photosynthesis.In the light-independent reactions, also known as the Calvin cycle

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Noble gas configuration for Li : [He]2s¹

In an atom, there are levels of energy in the shell and sub-shell

This energy level is expressed in the form of electron configurations.

Lithium with atomic number 3, then the electron configuration:

1s²2s¹

And for noble gas configuration or it can be called Condensed electron configurations :

[He]2s¹

Answer:

[He]2s¹

Explanation:

Moles of Hydrogen gas collected : 0.127

The reaction coefficient in a chemical equation shows the mole ratio of the components of the reactants and products

If one mole of the reactant or product is known, then we can determine the moles of the other compounds involved in the reaction

Reaction

Mg(s)+2HCl(aq)⇒H₂(g)+MgCl₂(aq)

mass of Mg=3.09 g

mol Mg (Ar= 24,305 g/mol) :

\(\tt mol=\dfrac{mass}{Ar}\\\\mol=\dfrac{3.09}{ 24,305}\\\\mol=0.127\)

Magnesium metal reacts with excess Hydrochloric acid, so Mg as a limiting reactant and moles of product is based on moles of Mg

From the equation, moles ratio Mg : H₂ = 1 : 1, so moles H₂ :

\(\tt \dfrac{1}{1}\times 0.127=0.127\)

Answer

0.113 M

Explanation

Given that:

The volume of the stock solution, V₁ = 50.0 mL

The concentration of the stock solution, C₁ = 1.74 M

The volume of the solution the chemist made, V₂ = 770.0 mL

What to find:

The concentration (C₂) of the BaCl₂ solution the chemist made.

Step-by-step solution:

The concentration (C₂) of the chemist's working solution can be calculated using the dilution formula below:

Hence, the concentration of the chemist's working solution is 0.113 M.

Answer:

it's volume also decrease

Number of unpaired electrons present is 1 electron therefore it is paramagnetic in nature. Number of unpaired electrons in zinc is zero therefore it is diamagnetic in nature

The magnetic properties of a compound can be determined from the electronic configuration and the size of the atoms. Because magnetism is generated by the electronic spin. The number of unpaired electrons in a specific compound indicates how magnetic the compound is.

If there are unpaired electrons present in the electronic configuration then the compound is said to be paramagnetic in nature. If the compounds have all paired electrons then the compound is said to be diamagnetic in nature.

In case of Fluorine the atomic number of the atom is 9 so we can see that in the 2p orbital there are 5 electron among which 4 are paired electrons and 1 is unpaired electrons. Hence it is paramagnetic in nature.

Zinc atomic number is 30, and we see that there are no unpaired electrons that are present hence the atom is diamagnetic in nature.

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The volume of the gas at 18.00 ∘C and 0.992 atm is 4.86 L.

To solve this problem, we will use the ideal gas law, which states that PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin.

First, we need to convert the initial temperature to Kelvin by adding 273.15. Therefore, the initial temperature is 287.35 K.

Next, we can calculate the number of moles of gas using the given information. We can rearrange the ideal gas law to solve for n: n = (PV)/(RT). Plugging in the values, we get:

n = (1.50 atm)(3.55 L) / [(0.08206 L·atm/mol·K) (287.35 K)] = 0.194 mol

Now we can use the ideal gas law again to find the final volume. We can rearrange the ideal gas law to solve for V:

V = (nRT)/P

First, we need to convert the final temperature to Kelvin by adding 273.15. Therefore, the final temperature is 291.15 K.

Plugging in the values, we get:

V = (0.194 mol)(0.08206 L·atm/mol·K)(291.15 K) / 0.992 atm = 4.86 L

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Answer:

Melting point

Explanation:

Melting point is a intensive property and Intensive properties can be used to help identify a sample because these characteristics do not depend on the amount of sample, nor do they change according to conditions.

IF IT WAS HELPFUL HIT THE CROWN

Answer:

Explanation:

Yes melting point!

Answer: 4 FeSO4(s) + O2(g) + 10 H2O(l) ---> 4 Fe(OH)3 + 4 H2SO4

Explanation:

FeSO4(s) + O2(g) + H2O(l) = Fe(OH)3 + H2SO4

In other to balance the equation, the total number of atoms of each element on the Left Hand Side (LHS) of the equation must be equal to the total number of atoms on the  Right Hand Side (RHS) of the equation.

Add the following coefficients to the equation;

FeSO4 = Add 4,  H20 = Add 10,  Fe (OH)3 = Add 4 and H2SO4 = Add 4

By doing this, you will discover that the total number of atoms on bothe sides of the equation are balanced; thus we have;

4 FeSO4(s) + O2(g) + 10 H2O(l) ---> 4 Fe(OH)3 + 4 H2SO4

Protons

Protons are the subatomic particle that determines the identity of an element.

Answer:

Explanation:Protons and neutrons are located in the nucleus of an atom and determine the mass of an atom. Protons have a positive electrical charge and electrons have a negative electrical charge. Atoms that have the same number of protons and electrons do not have an electrical charge.

Answer:

I think it is b 50%

Answer:

TechnologyCommand Data Solutions specializes in empowering your data and content with a high degree of quality and scope. Intelligent data fine-tunes your advertising, and enables your core sales team to work within relevant market zones. This saves a lot of valuable time and increases ROI.

Explanation:

Answer:

Technology Command Data Solutions specializes in empowering your data and content with a high degree of quality and scope. Intelligent data fine-tunes your advertising, and enables your core sales team to work within relevant market zones. This saves a lot of valuable time and increases ROI. We do this with a multi-faceted approach using cutting edge technologies. We also market your content through various channels such as telemarketing and e-mail campaigns, as well as syndication. We further engage your customers through blogs, webinars and webcasts. We closely study your customers’ requirements and arrange meetings when the time is right. This ground work frees up your sales force to focus on its strength: hard core sales. We cleanse your existing database and remove irrelevant data. We enrich it with new, more relevant contact information. We monitor your existing and potential customer profiles and track their technology needs. The moment we sense purchase behavior, you get an instant update.

Answer:

joules per gram per degree (J/goC) or calories per gram per degree (cal/goC).

Explanation:

Answer:

Joules, Kelvin, or calories

Explanation:

Answer:

A

Explanation:

If you consume 0.8 kg of tap water per day, you can consume 0.0008 g (or 0.8 mg) of NaF.

Tap water is fluoridated with a sodium fluoride (NaF) concentration of approximately 1 ppm.

1 ppm means 1 part of NaF per million parts of water (by mass).

Therefore, in 1 kg (1000 g) of tap water, there would be 1 mg of NaF.

So, in 0.8 kg (800 g) of tap water, the amount of NaF consumed would be:

(1 mg NaF / 1 kg of water) x (800 g of water) = 0.8 mg NaF

To convert milligrams (mg) to grams (g), we divide by 1000:

0.8 mg NaF / 1000 = 0.0008 g NaF

Therefore, you would consume 0.0008 g (or 0.8 mg) of NaF per day.

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The equilibrium concentration of IBr is 0.094 M. The equilibrium constant is a value that describes the ratio of concentrations of products to reactants at equilibrium.

Equilibrium is a state in which opposing forces or influences are balanced, and it is reached when the rates of forward and reverse reactions become equal. This can occur when a chemical reaction takes place in a closed container and reaches a point where the concentrations of reactants and products do not change over time.  In this case, the equilibrium constant is 1.10 * 10^{-2}.
In order to determine the equilibrium concentration of the product, IBr, we need to use the equilibrium constant and the initial concentrations of I2 and Br2. The chemical equation for the reaction is:
I2 + Br2 ⇌ 2IBr
At equilibrium, let the concentration of IBr be x. Then the concentrations of I2 and Br2 will be 0.500 - x and 0.500 - x, respectively. The equilibrium constant expression for the reaction is:
Kc =\frac{ [IBr]2 }{[I2][Br2] }
Substituting the concentrations into the expression, we get:
1.10 * 10^{-2} = (\frac{x}{1.0})^{2}}{ [(\frac{0.500 - x)}{1.0}][(\frac{0.500 - x)}{1.0}] }
Simplifying the expression, we get:
1.10 * 10^{-2} =\frac{ x^{2}}{ (0.25 - x + x^{2}) }
Rearranging the equation and solving for x, we get:
x = 0.094 M
Therefore, the equilibrium concentration of IBr is 0.094 M.

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The amount of landfill space saved by recycling paper products in 2010 in the United States is 2.31 times the total amount of MSW recycled in that year.

To calculate the amount of landfill space saved by recycling paper products in 2010 in the United States, we need to find out the number of paper products that were recycled. We can do that by using the data on the total MSW recycled and the percentage of that which was accounted for by paper products.

Percentage of total MSW recycled accounted for by paper products in 2010 = 33%

Amount of landfill space saved per metric ton of paper products recycled = 7 m³

We need to determine the amount of landfill space saved by recycling paper products in 2010 in the United States.

Therefore, Let's assume that the total amount of MSW recycled in 2010 was x metric tons. Then, the number of paper products recycled = 33% of x= (33/100) x metric tons = 0.33x metric tons

Therefore,

The amount of landfill space saved by recycling paper products in 2010 = Amount of paper products recycled × Landfill space saved per metric ton of paper products recycled= 0.33x metric tons × 7 m³/metric ton= 2.31x m³

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Answer:

D). Scientific method.

Explanation:

'Scientific research method' is described as the method of research that 'employs evidence as well as logic to learn about the natural phenomenon and world.' An observation is made at first, then sufficient data is gathered to formulate a theory or hypothesis and its validity is tested and the results are interpreted. The careful observation is logically tested and justified by testing the accuracy through appropriate evidence. It helps in reaching more authentic conclusions and hence, option D is the correct answer.

Answer:

B! Hope this helps! :)

Explanation:

We can solve this problem using the Combined Gas Law formula, which is (P1 * V1) / T1 = (P2 * V2) / T2 Where P1 and P2 represent the initial and final pressures, V1 and V2 represent the initial and final volumes, and T1 and T2 represent the initial and final temperatures in Kelvin.

We are given the following values P1 = 700 mmHg V1 = 3.6 L T1 = 10°C P2 = 1.25 atm T2 = 40°C Convert all the values to the appropriate units. Convert temperatures to Kelvin T1 = 10°C + 273.15 = 283.15 K T2 = 40°C + 273.15 = 313.15 K Convert pressure to atm P1 = 700 mmHg * (1 atm / 760 mmHg) = 0.92105 ATM Substitute the values into the Combined Gas Law formula and solve for V2. (0.92105 * 3.6) / 283.15 = (1.25 * V2) / 313.15 Rearrange the equation and solve for V2. V2 = (1.25 * 313.15 * 3.6) / (283.15 * 0.92105) = 4.903 L The helium will occupy a volume of 4.903 L when the pressure changes to 1.25 atm and the temperature becomes 40°C.

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Aspirin exerts the following effects: analgesic (pain relief), antipyretic (fever reduction), and anti-inflammatory (reduces inflammation). It does not possess direct anti-infective or antiviral properties.

Aspirin acts as an analgesic by reducing pain and inflammation by blocking the production of prostaglandins, which are chemicals involved in the pain and inflammatory response. It also acts as an antipyretic by inhibiting the production of prostaglandins in the hypothalamus, helping to lower fever. Additionally, aspirin has anti-inflammatory properties by inhibiting enzymes called cyclooxygenases (COX), which are involved in the production of prostaglandins. However, aspirin is not considered an anti-infective or antiviral medication, as it does not directly target or kill microorganisms or viruses.

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It is to be noted that there are no p orbitals accessible for multiple bonding in an sp3 hybrid. The two unhybridized p orbitals are accessible for multiple bonding in sp hybridization.

Bonds are formed using unhybridized p atomic orbitals. Two unhybridized p atomic orbitals from distinct atoms overlap side by side, resulting in a shared electron pair filling the area above and below the connecting line between the atoms (the internuclear axis).

An atom will contain the same amount of hybridized orbitals as electron density areas. There can be a total of four hybridized sp3 orbitals, thus take the number of regions of electron density and divide that by four to get the number of unhybridized p orbitals.

An atomic orbital is a function in atomic theory and quantum mechanics that describes the position and wave-like behavior of an electron in an atom. This formula may be used to determine the likelihood of locating any atom's electron in any given location surrounding the nucleus.

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Answer:

it will form an ionic bond

Answer:

Si

Explanation:

Dispersion force or London force is the force of attraction between two atoms or molecules in a substance in solid , liquid and gas . In gas , this force is minimum and in solid this force is maximum . In solid this force is maximum in metals in which this force forms  metallic bond .

Among the given substances , Si , Sn , MgO , C₂₀H₄₂ are solid , so dispersion force will be high in them .

Among all as mentioned above , Si will have highest dispersion force . It is due to four covalent bond that bind two atoms of Si in solid silicon . Its three dimensional crystal structure consist of silicon atoms , all bound by four covalent bonds .

Answer:

It is C

Explanation:

it sends signals to the brain so it would be C

Answer:

C. The nervous system controls everything you do, including breathing, walking, thinking, and feeling.

is the answer

Answer:

b)6.2 grams

Explanation:

Recall that percentage yield =

actual yield/theoretical yield * 100/1

theoretical yield = 8.2 grams

percentage yield = 75%

Let the actual yield be x

Hence;

75 = x/8.2 * 100

75 = 100x/8.2

75 * 8.2 = 100x

x = 75 * 8.2/100

x = 6.15 g

x = 6.2 g

75 =

1)the volume of water needed to dissolve \(0.0599 g\) calcium sulfate is approximately 2.701 liters.

2)the mass of silver cyanide dissolved in 175 mL of the saturated solution is dependent on the concentration of AgCN, which is not provided in the question.

3)the volume of water needed to dissolve \(0.0699 g\) calcium carbonate is approximately 1836.271 liters.

What is solubility?

Solubility refers to the ability of a substance, known as the solute, to dissolve in a solvent and form a homogeneous mixture. It is a physical property that describes the maximum amount of solute that can dissolve in a given amount of solvent at a specific temperature and pressure. Solubility is typically expressed in terms of grams of solute that can dissolve in a certain volume of solvent, such as grams per liter (g/L) or moles per liter (mol/L).

Part 1: To determine the volume of water needed to dissolve 0.0599 grams of calcium sulfate, we can use the solubility product constant (Ksp) for calcium sulfate, which is given as \(2.4 \times 10^{-5}$.\)

Let's assume the volume of water needed is V liters. The molar mass of calcium sulfate (\(CaSO4\)) is \(136.14 g/mol\). We can calculate the concentration of calcium sulfate in the saturated solution using the given mass:

\(\[\text{{Concentration of CaSO}}_4 = \frac{{\text{{mass of CaSO}}_4}}{{\text{{molar mass of CaSO}}_4}}\]\)

Substituting the values, we have:

\(\[\frac{{0.0599 \, \text{{g}}}}{{136.14 \, \text{{g/mol}}}} = \frac{{\text{{Concentration of CaSO}}_4}}{{V \, \text{{L}}}}\]\)

Solving for V, we find:

\(\[V = \frac{{0.0599 \, \text{{g}} \times 136.14 \, \text{{g/mol}}}}{{2.4 \times 10^{-5} \, \text{{mol/L}}}}\]\)

Therefore, the volume of water needed to dissolve 0.0599 grams of calcium sulfate is approximately \(2.701$ liters.\)

Part 2: To determine the mass of silver cyanide dissolved in 175 mL of a saturated solution, we can use the solubility product constant (Ksp) for silver cyanide, given as \($1.2 \times 10^{-16}$.\)

Let's assume the mass of silver cyanide dissolved is $m$ grams. The molar mass of silver cyanide (AgCN) is 133.88 g/mol. We can calculate the concentration of silver cyanide in the saturated solution using the given volume:

\(\[\text{{Concentration of AgCN}} = \frac{{\text{{mass of AgCN}}}}{{\text{{molar mass of AgCN}}}}\]\)

Substituting the values, we have:

\(\[\frac{m \, \text{{g}}}{{133.88 \, \text{{g/mol}}}} = \frac{{\text{{Concentration of AgCN}}}}{{0.175 \, \text{{L}}}}\]\)

Solving for m, we find:

\(\[m = \frac{{133.88 \, \text{{g/mol}} \times \text{{Concentration of AgCN}}}}{{0.175 \, \text{{L}}}}\]\)

Therefore, the mass of silver cyanide dissolved in 175 mL of the saturated solution is dependent on the concentration of AgCN, which is not provided in the question.

Part 3: To determine the volume of water needed to dissolve 0.0699 grams of calcium carbonate, we can use the solubility product constant (Ksp) for calcium carbonate, given as \(3.8 \times 10^{-9}$.\)

Let's assume the volume of water needed is V liters. The molar mass of calcium carbonate (CaCO3) is 100.09 g/mol. We can calculate the concentration of calcium carbonate in the saturated solution using the given mass:

\(\[\text{{Concentration of CaCO}}_3 = \frac{{\text{{mass of CaCO}}_3}}{{\text{{molar mass of CaCO}}_3}}\]\)

Substituting the values, we have:

\(\[\frac{{0.0699 \, \text{{g}}}}{{100.09 \, \text{{g/mol}}}} = \frac{{\text{{Concentration of CaCO}}_3}}{{V \, \text{{L}}}}\]\)

Solving for V, we find:

\(\[V = \frac{{0.0699 \, \text{{g}} \times 100.09 \, \text{{g/mol}}}}{{3.8 \times 10^{-9} \, \text{{mol/L}}}}\]\)

Therefore, the volume of water needed to dissolve \(0.0699 g\) calcium carbonate is approximately 1836.271 liters.

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The molecules produced by translation including molecules that are subject to further modification after initial synthesis are-  RNA polymerase and Aminoacyl-tRNA synthetase.

The process of translation converts the information carried by messenger RNA from DNA into a string of amino acids joined by peptide bonds. Translation from one code (nucleotide sequence) to another code is essentially what it is (amino acid sequence). This activity takes place on the ribosome, just as mRNA synthesis took place on the RNA polymerase.

The ribosome pairs tRNA molecules with the three complimentary bases in their anticodon regions with sets of three bases from the mRNA (called codons). The base-pairing rule is crucial in this recognition once more (A binds to U and C binds to G). In order to add the amino acids to the polypeptide chain, the ribosome matches three base pairs at a time as it advances along the mRNA. The polypeptide and mRNA are released by the ribosome when it reaches one of the "stop" codes. When this polypeptide twists into its natural shape, it starts to function as a protein in the metabolism of the cell.

Hence, The molecules produced by translation including molecules that are subject to further modification after initial synthesis are- RNA polymerase and Aminoacyl-tRNA synthetase.

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