if you wanted to create 500g of calcium carbonate how much calcium chloride and sodium carbonate would you need?​

Answer:

39.99711

Explanation:

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A chemical equation is an equation showing the formation of new products from reactants.

A chemical reaction is a reaction which involves changes in the composition and chemical properties of substances resulting in the formation of new substances.

A chemical reaction is usually represented by chemical equations.

A balanced chemical equation is one in which the atoms of elements are equal on both sides of the equation.

A net ionic equation shows only the ions that form products.

Therefore, a chemical equation is an equation showing the formation of new products from reactants.

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1) Diesel has a higher viscosity than petrol.

2) Petrol is more flammable than diesel.

3) The formula will be C₁₀H₂₂.

4) The equation is; 2C8H18+25O2→16CO2+18H2O.

Depending on the precise composition and temperature, the viscosity of gasoline and diesel can change. In general, diesel is more viscous than gasoline. Higher viscosity fluids are thicker and flow more slowly than lower viscosity fluids because viscosity relates to the resistance of a fluid to flow.

Diesel is less flammable than gasoline. The lowest temperature at which gasoline can evaporate and turn into an ignitable combination in air is known as its flash point, and it is lower for gasoline. Compared to diesel fuel, petrol vapors are much more flammable and can ignite at lower temperatures.

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Answer:  **

H-N-H

   |

  H

Explanation:

Look at a periodic table to determine how many electrons you need to account for. Hydrogen (H) only has 1 electron, while Nitrogen (N) has 5. We have three Hydrogen atoms and one Nitrogen atom, so the total number of electrons will be 3 * 1 + 5 = 8 e-.

Now, place the center atom, which will be Nitrogen and place the three Hydrogens on three sides of it as above in the answer. You should use single bonds for this. Each single bond is a pair of electrons, so since we have three single bonds so far, we have accounted for 2 * 3 = 6 electrons. However, we need 2 more electrons for the total of 8. We put these electrons in as a lone pair above Nitrogen.

We check to see if everything follows the octet rule: Nitrogen has three single bonds, so that's 6 e-, as well as one lone pair, so that's another 2 e- for a total of 8 e-. Check. Now look at Hydrogen: H is the only element whose full orbital is 2 e-. Each H has a single bond with Nitrogen, so each does have 2 e-.

Thus, we know this is the correct diagram, and we are done.

Explanation:

A bond line structure of a compound has H N H in linear plane and a hydrogen is branching upward, and the compound is H N (H) H. The nitrogen has two dots at its bottom represents a lone pair of electrons. So ,the correct answer is option C.

The correct Lewis structure for ammonia (\(NH_3\)) is option C. It shows a bond line structure with three hydrogen atoms (H) bonded to a central nitrogen atom (N) in a linear plane.

One hydrogen atom branches upward from the plane. Additionally, the nitrogen atom in this structure has two dots at its bottom, indicating a lone pair of electrons. This arrangement follows the octet rule, as nitrogen has formed three covalent bonds with hydrogen, completing its valence shell. The lone pair on nitrogen gives ammonia its characteristic properties.

Thus, option C accurately represents the Lewis structure of ammonia, showing the bonding and lone pair arrangement of its atoms.

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Metal acts as a catalyst in catalytic converters

Answer:

The elements toward the bottom left corner of the periodic table are the metals that are the most active in the sense of being the most reactive.

The most highly reactive elements are typically found at the far left (Group 1) and far right (Group 17) of the periodic table.

Group 1 elements, also known as alkali metals, are located on the far left of the periodic table. They have one electron in their outermost energy level and are highly reactive due to their tendency to lose that electron to achieve a stable electron configuration. This makes them very reactive with water and other substances.

Group 17 elements, known as halogens, are located on the far right of the periodic table. They have seven electrons in their outermost energy level and are highly reactive due to their strong tendency to gain one electron to achieve a stable electron configuration. This makes them reactive with metals and other elements.

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Taking into account the reaction stoichiometry, 1 mole of H₂ can be produced by reacting 2 moles of HCI.

In first place, the balanced reaction is:

Mg + 2 HCl  → MgCl₂ + H₂

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

By reaction stoichiometry 2 moles of HCl form 1 mole of H₂.

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The amount, in kJ, of heat needed to completely vaporize 50.0g of water at 100°C is 118.8 kJ.

The heat needed to completely vaporize 50.0g of water at 100°C can be calculated using the following formula:

q = m x Hv

where:

First, we need to convert 50.0g to moles by dividing by the molar mass of water which is approximately 18.015 g/mol3:

moles of water = 50.0 g / 18.015 g/mol moles of water = 2.776 mol

Thus:

q = (2.776 mol) x (40.65 kJ/mol) q = 112.8 kJ

In other words, 112.8 kJ of heat is needed to completely vaporize 50.0g of water at 100°C.

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The order of a reaction is determined experimentally and describes the relationship between the rate of a reaction and the concentration of reactants, whereas the molecularity of a reaction is a theoretical concept that describes the number of molecules that participate in the rate-determining step of a reaction.

The order of a reaction is the mathematical representation of the relationship between the rate of a reaction and the concentration of reactants. It describes how the rate of a reaction changes with respect to the change in concentration of reactants.

The order of a reaction is determined experimentally by observing how the rate of a reaction changes as the concentration of reactants is varied while keeping the concentration of other reactants and conditions constant. The order of a reaction can be 0, 1, 2, or even a fraction.

The molecularity of a reaction ​is the number of reactant molecules that collide in a single step to form the product. The molecularity of a reaction can be unimolecular (1), bimolecular (2), or termolecular (3). It is important to note that not all reactions have a molecularity, as some reactions have multiple steps and multiple reactants involved.

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Answer: Moles of hydrogen required are 4.57 moles to make 146.6 grams of methane, \(CH_{4}\).

Explanation:

Given: Mass of methane = 146.6 g

As moles is the mass of a substance divided by its molar mass. So, moles of methane (molar mass = 16.04 g/mol) are calculated as follows.

\(Moles = \frac{mass}{molar mass}\\= \frac{146.6 g}{16.04 g/mol}\\= 9.14 mol\)

The given reaction equation is as follows.

\(C + 2H_{2} \rightarrow CH_{4}\)

This shows that 2 moles of hydrogen gives 1 mole of methane. Hence, moles of hydrogen required to form 9.14 moles of methane is as follows.

\(Moles of H_{2} = \frac{9.14}{2}\\= 4.57 mol\)

Thus, we can conclude that moles of hydrogen required are 4.57 moles to make 146.6 grams of methane, \(CH_{4}\).

Answer:

32.2 g of Na will produce 43.4 g of Na2O.

Explanation:

The balanced chemical equation for the reaction between sodium and oxygen shows that 4 moles of sodium react with 1 mole of oxygen to produce 2 moles of sodium oxide:

4Na(s) + O2(g) → 2Na2O(s)

To solve this problem, we can use the following steps:

Step 1: Convert the mass of Na given in the problem to moles using the molar mass of Na.

molar mass of Na = 23 g/mol

moles of Na = mass of Na / molar mass of Na

moles of Na = 32.2 g / 23 g/mol

moles of Na = 1.4 mol

Step 2: Use the mole ratio from the balanced chemical equation to determine the moles of Na2O produced.

From the balanced chemical equation, we can see that 4 moles of Na react to produce 2 moles of Na2O.

moles of Na2O = (moles of Na / 4) x 2

moles of Na2O = (1.4 mol / 4) x 2

moles of Na2O = 0.7 mol

Step 3: Convert the moles of Na2O to grams using the molar mass of Na2O.

molar mass of Na2O = 62 g/mol

mass of Na2O = moles of Na2O x molar mass of Na2O

mass of Na2O = 0.7 mol x 62 g/mol

mass of Na2O = 43.4 g

Therefore, 32.2 g of Na will produce 43.4 g of Na2O.

The answer is: The electronic configuration of Nitrogen is \(1s^22s^22p^3\).

Electronic configuration: The electronic configuration is defined as the distribution of electrons of an atom in the atomic or molecular orbitals and is written using the labels for the subshell.

How to decide which orbital is filled first?

(Shown in image)

         \(1s^22s^22p^3\)

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Nitrogen's complete electron configuration is 12s2s22p3.

The shorthand electron configuration for noble gases is [He] 2s22p3. Nitrogen has an atomic number of 7. The nitrogen atoms' nucleus contain this many protons. An atom that is neutral has an equal number of protons and electrons. Thus, the ground state electron configuration will consist of 7 electrons in the suitable s and p orbitals (state of lowest energy). For nitrogen, the entire electron configuration is 1s22s22p. Scientists may easily express and explain how the electrons are organized around the nitrogen atom's nucleus by using the configuration notation for nitrogen (N). As a result, it is simpler to comprehend and forecast how atoms will cooperate to form chemical bonds.

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In the carbon dioxide molecule has four shared pairs of electrons, there will be four covalent bonds created, hence option B is correct.

In organic chemistry, covalent bonds are far more prevalent than ionic ones. Two nuclei are simultaneously drawn to one or more pairs of electrons to form a covalent connection. Bonding electrons are those that are present between the two nuclei.

When atoms share electron pairs, covalent bonding results. Atoms create covalent bonds with one another in order to build a complete electron shell, which increases stability.

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Answer: C

Explanation:

When new cells form, they need a copy of DNA, which is why DNA is replicated.

Answer:

the type is single replacement

The given reaction equation represents a single-replacement reaction.

Explanation:

                   ABC→ A+B+C

                   A+B+C → ABC

                   AB+ C → AC + B

                  AB+ CD → AC + BD

Given:

\(Fe + CuCl_2 \rightarrow FeCl_2 + Cu\)

To find:

The type of chemical reaction represented by the given equation.

Solution:

In the given reaction:

\(Fe + CuCl_2 \rightarrow FeCl_2 + Cu\)

Iron is replacing copper from its compound which is copper(II) chloride to give iron(II) chloride and copper as a product.

So from this, we can conclude that the given reaction equation represents a single-replacement reaction.

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K1 and K2 are related algebraically because once the values are inserted into the equilibrium equation, both equations will yield a denominator of 100.

Answer:

biological decay

Explanation:

Hope this helps

Answer:

2.The reaction is third order overall

Explanation:

THIS ANSWER IS CORRECT

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Answer:

\(\%NaHCO_3=61.2\%\)

Explanation:

Hello.

In this case, since the reaction between sodium bicarbonate and a symbolic HA is:

\(NaHCO_3+HA\rightarrow NaOH+CO_2\)

For 0.561 g of carbon dioxide (molar mass = 44 g/mol) we can compute the required mass of sodium bicarbonate (molar mass = 84 g/mol ) via stoichiometry:

\(m_{NaHCO_3}=0.561gCO_2*\frac{1molCO_2}{44gCO_2}*\frac{1molNaHCO_3}{1molCO_2}* \frac{84gNaHCO_3}{1molNaHCO_3}\\ \\m_{NaHCO_3}=1.071gNaHCO_3\)

Then, the percent by mass of sodium bicarbonate in the original mixture is obtained by dividing the mass of the sodium bicarbonate from which the CO2 was yielded by the total mass of the mixture:

\(\%NaHCO_3=\frac{1.071g}{1.75g}*100\%\\ \\\%NaHCO_3=61.2\%\)

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To solve this problem, we need to use the equilibrium constant expression:

Kc = [NH3]^2 / ([N2] x [H2]^3)

where Kc is the equilibrium constant, [NH3], [N2], and [H2] are the molar concentrations of NH3, N2, and H2 at equilibrium, respectively.

At the beginning of the reaction, we have [N2] = 0.1 moles and [H2] = 0.1 moles, and [NH3] = 0 moles. Let's assume that x moles of N2 react to form NH3, so the amount of N2 left at equilibrium will be (0.1 - x) moles. Similarly, 3x moles of H2 react to form 2x moles of NH3, so the amount of H2 left at equilibrium will be (0.1 - 3x) moles, and the amount of NH3 formed will be 2x moles.

Now we can set up an ICE table (Initial, Change, Equilibrium) to keep track of the changes in concentration:

N2 3H2 2NH3

Initial 0.1 0.1 0

Change -x -3x +2x

Equilibrium 0.1-x 0.1-3x 2x

At equilibrium, we know that the reaction quotient Qc is equal to the equilibrium constant Kc:

Qc = [NH3]^2 / ([N2] x [H2]^3) = (2x)^2 / ((0.1-x) x (0.1-3x)^3) = Kc

Simplifying this expression and solving for x, we get:

38,000 = 4x^2 / (0.1-3x)^3(0.1-x)

(0.1-3x)^3(0.1-x) = 4x^2 / 38,000

(0.1-3x)^3(0.1-x) = 1.0526x^2

At this point, we can either use trial and error to solve for x, or we can use a numerical method such as the Newton-Raphson method to iteratively solve the equation. Using the latter method, we can write the equation as:

f(x) = (0.1-3x)^3(0.1-x) - 1.0526x^2 = 0

and its derivative as:

f'(x) = -9(0.1-3x)^2(0.1-x) - (0.1-3x)^3 + 2(1.0526)x

Starting with an initial guess of x = 0.05, we can iterate using the formula:

x1 = x0 - f(x0) / f'(x0)

where x1 is the next approximation, x0 is the current approximation, and f(x0) and f'(x0) are the function and its derivative evaluated at x0. After a few iterations, we find that x ≈ 0.0662 moles, which corresponds to the equilibrium concentrations:

[N2] = 0.1 - x ≈ 0.0338 moles

[H2] = 0.1 - 3x ≈ 0.0016 moles

[NH3] = 2x

The body contains organ systems that interact with each other to carry out all necessary functions for survival and growth are digestive , respiratory , circulatory system.

The body contains organs system that interact with each other to carry out all necessary functions for survival and growth are digestive system , respiratory system and circulatory system. They are involved in breakdown and transport of food and the transport of oxygen throughout the body to cell. where they are used up as energy , growth and repair.

Thus, The body contains organ systems that interact with each other to carry out all necessary functions for survival and growth are digestive , respiratory , circulatory system.

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Answer:

D.

Explanation:

Genetic Engineering is a huge part in manipulating a foods property. Chemical engineering mostly the science with numbers in foods.

Biology is literally the life of the food.

Genetic engineering, chemical engineering, biology fields are significantly involved in food engineering.

Hence, Option (D) is correct answer.

Food engineering is the application of engineering principles which develop and design the systems for the production, storing, distributing and processing the food material.

Food engineering is engineering field that combines microbiology, genetic engineering, chemistry engineering, biology and some other branches of science to produce food materials.

Thus from the above conclusion we can say that Genetic engineering, chemical engineering, biology fields are significantly involved in food engineering.

Hence, Option (D) is correct answer.

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Complete question is;

When a diprotic acid is titrated with a strong base, and the Ka1 and Ka2 are significantly different, then the pH vs. volume plot of the titration will have

a. a pH of 7 at the equivalence point.

b. two equivalence points below 7.

c. no equivalence point.

d. one equivalence point.

e. two distinct equivalence points

Answer:

Option E - Two Distinct Equivalence points

Explanation:

I've attached a sample diprotic acid titration curve.

In diprotic acids, the titration curves assists us to calculate the Ka1 and Ka2 of the acid. Thus, the pH at the half - first equivalence point in the titration will be equal to the pKa1 of the acid while the pH at the half - second equivalence point in a titration is equal to the pKa2 of the acid.

Thus, it is clear that there are two distinct equivalence points.

Answer:

A

Explanation:

A
from le chatelier's principle, we know that as the concentration of one reactant or product changes, the equilibrium is shifted. If the concentration of a gaseous or aqueous product increases, the equilibrium is shifted to the left. Iodine is added, which means that the equilibrium is shifted to the left. Iodine increases, and HI increases. Since HI has increased, there must have been some iodine and hydrogen consumed. Since iodine was added, there is a net increase of iodine. However, since hydrogen was consumed and no new hydrogen was added, the concentration of hydrogen decreases

The moles of the ammonia that is produced is 3.33 moles.

Stoichiometry is an important tool in chemical analysis, and it is used in a wide range of industries, including pharmaceuticals, materials science, and environmental science.

The balanced reaction equation in this case can be given as;

\(N_{2} (g)+3H_{2} (g)--- > 2NH_{3} (g)\)

If 3 moles of hydrogen produces 2 moles of ammonia

5 moles of hydrogen will produce 5 * 2/3

= 3.33 moles

Thus we have 3.33 moles of ammonia.

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Answer:

When you know the number of moles that you expect, you will multiply by the molar mass of the product to find the theoretical yield in grams. In this example, the molar mass of CO2 is about 44 g/mol. (Carbon's molar mass is ~12 g/mol and oxygen's is ~16 g/mol, so the total is 12 + 16 + 16 = 44.

Answer:

Is it multiple choice or what I need to know the details

Explanation:

Answer:

cells -> tissues -> organs -> organ system

Answer:

Cells > tissues > Organs > Organs Systems

Explanation:

tissues are made of a group of cells

a specific organ is made up of a geoup of specific type of tissues

and a group of organs make up the organs system

Answer:

A physical property is a characteristic of a substance that can be observed or measured without changing the identity of the substance. Physical properties can be color, density, hardness, melting or boiling points, while a chemical property describes the ability of a substance to undergo a specific chemical change.