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The location of the dot is _____.

Latitude/Longitude

30° N/60° W
30° N/60° E
60° N/30° W
60° N/60° E

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Final answer:

To find the mass of HCl produced, use stoichiometry based on the balanced chemical equation.

Explanation:

To find the number of grams of HCl that can be produced, we need to use the stoichiometry of the balanced chemical equation. From the equation, we can see that for every 2 moles of AlCl3, 6 moles of HCl are produced. Therefore, we can set up a proportion:

2 moles AlCl3 / 6 moles HCl = 249 g AlCl3 / x g HCl

Solving for x, we find that x = 747 g HCl. Therefore, 747 grams of HCl can be produced when 249 g of AlCl3 is reacted.

401(k) and  Keogh plan both are  an example of a defined contribution plan and the correct option is option C.

A defined contribution (DC) plan is a retirement plan that's typically tax-deferred, like a 401(k) or a 403(b), in which employees contribute a fixed amount or a percentage of their paychecks to an account that is intended to fund their retirements.

In addition, the sponsor company can match a portion of employee contributions as an added benefit.

These plans place restrictions that control when and how each employee can withdraw from these accounts without penalties.

Therefore, 401(k) and  Keogh plan both are  an example of a defined contribution plan and the correct option is option C.

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Answer is: volume is 20 mL.
c₁(CH₃COOH) = 2,5 M.
c₂(CH₃COOH) = 0,5 M.
V₂(CH₃COOH) = 100 mL.
V₁(CH₃COOH) = ?
c₁(CH₃COOH) · V₁(CH₃COOH) = c₂(CH₃COOH) · V₂(CH₃COOH).
2,5 M · V₁(CH₃COOH) = 0,5 M · 100 mL.
V₁(CH₃COOH) = 0,5 M · 100 mL ÷ 2,5 M.
V₁(CH₃COOH) = 20 mL ÷ 1000 mL/L =0,02 L.

Answer:

20 milliliters

Explanation:

I don't cap

Answer:

B is correcta-moundo

Explanation:

Answer:

c

Explanation:

im doing it now and the answer above me is wrong

Nearsightedness or myopia is a condition where the person can see the near objects clearly but distant objects appears blurred. This eye condition is corrected with contact lenses or prescription eyeglasses. Another approach is LASIK or corrective eye surgery. In LASIK laser is used to correct the vision.  

Answer:

2.03125g of acetylene

Explanation:

First thing's first, we have to write out the balanced chemical equation;

CaC2(s) + 2H2O(l) → Ca(OH)2(aq) + C2H2(g)

Water is in excess, so CAC2 is our limiting reactant. i.e it determines the amount of product that would be formed.

1 mol of CaC2 produces 1 mol of C2H2

In terms of mass;

Mass = Number of moles * Molar mass

where the molar mass of the elements are;

Ca = 40g/mol

C = 12g/mol

H = 1g/mol

CaC2 = 40+ (2*12) = 64g/mol

C2H2 =( 2 * 12) + ( 2 * 1) = 26g/mol

64g (1 * 64g/mol) of CaC2 produces 26g ( 1mol * 26g/mol) of C2H2

5g would produce x?

64 = 26

5 = x

Upon solving for x we have;

x = (5 * 26) / 64

x = 2.03125g

By using a balanced chemical equation and molar conversions, we can calculate that adding water to 5.00 g of CaC2 will produce approximately 2.03 grams of acetylene.

In order to find out how many grams of acetylene are produced by adding water to 5.00 g of CaC2, we need to start by writing a balanced chemical equation for the reaction: CaC2(s) + 2H2O(l) → C2H2(g) + Ca(OH)2(aq). From this equation, we can see that one molecule of calcium carbide reacts with two molecules of water to produce one molecule of acetylene and one molecule of calcium hydroxide.

Next, we calculate the molar mass of CaC2 which is approximately 64 g/mol. Therefore, 5.00 g of CaC2 is approximately 0.0781 moles. According to the chemical equation, one mole of CaC2 produces one mole of C2H2, so 5.00 g of CaC2 would also produce 0.0781 moles of acetylene.

Last, we convert the moles of acetylene to grams by multiplying by its molar mass (26.04 g/mol), which gives us approximately 2.03 g of acetylene. Therefore, approximately 2.03 grams of acetylene are produced by adding water to 5.00 g of CaC2.

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After 30 years, 12.5 grams will remain from a 100 grams sample of a radioactive material with a 10-year half-life. This is because the half-life is the period of time it takes for a substance undergoing decay to decrease by half.

The concept in question is related to radioactive decay and the half-life of a substance, both core concepts in physics and nuclear chemistry. For a substance with a half-life of 10 years, after each period of 10 years, it will be reduced to half of its previous amount. So, in a timeline, starting with 100 grams of this substance, after 10 years, you'll have 50 grams left. 10 years later (i.e., 20 years total), half of these 50 grams decay, leaving you with 25 grams. After another 10 years (i.e., 30 years total), half of this 25 grams decays, leaving you with 12.5 grams. Thus, in answer to your question, after 30 years of a 100 g sample of radioactive material with a 10-year half-life, 12.5 grams of it will remain.

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Answer : The balanced chemical reaction will be,

[tex]HNO_3(aq)+NH_3(aq)\rightarrow NH_4NO_3(aq)[/tex]

Explanation :

Balanced chemical reaction : It is a reaction in which the number of atoms of individual elements present on reactant side must be equal to the product side.

As per question.

When aqueous nitric acid react with aqueous ammonia then it gives ammonium nitrate as a product.

The balanced chemical reaction will be,

[tex]HNO_3(aq)+NH_3(aq)\rightarrow NH_4NO_3(aq)[/tex]

This reaction is an acid-base reaction in which an acid react with a base to give salt and water as a product.

FeSO4 iron sulfate.

Iron(II) sulfate or ferrous sulfate denotes a range of salts with the formula FeSO₄·xH₂O. those compounds exist most typically as the heptahydrate but several values for x are known. The hydrated form is used medically to treat iron deficiency, and additionally for business applications.

Ferrous sulfate (or sulfate) is a medicine used to treat and prevent iron deficiency anemia. Iron allows the body to make healthy red blood cells, which deliver oxygen across the body. some matters such as blood loss, pregnancy, or too little iron in your diet could make your iron supply drop too low, leading to anemia

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Molarity is a concentration unit that is expressed as the number of moles of the solute per liter of solution. Only Option D (10 mol of solute/ 1L of solution) presents the solution concentration in terms of molarity.

In chemistry, molarity is a concentration unit that is expressed as the number of moles of the solute per liter of solution. In this context:
Option A represents a weight to weight percent concentration, not molarity.
Option B, though it seems similar to molarity, is not equivalent due to using mass (g) instead of moles for the solute.
Option C would be considered dilution, wherein the volume of a solution is increased, thus decreasing the solute's overall molarity.
Only Option D (10 mol of solite/ 1L of solution) directly aligns with the definition of molarity and represents the solution concentration in terms of molarity.

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Answer: The gas formed by the reaction of sodium sulfite and hydrochloric acid is [tex]SO_2[/tex]

Explanation:

When sodium sulfite reacts with hydrochloric acid, it leads to the formation of many products.

The chemical equation for the reaction of two reacts are:

[tex]Na_2SO_3(s)+2HCl(aq.)\rightarrow 2NaCl(aq.)+SO_2(g)+H_2O(l)[/tex]

By Stoichiometry of the reaction:

1 mole of solid sodium sulfite reacts with 2 moles of aqueous hydrochloric acid to produce 2 moles of aqueous sodium chloride, 1 mole of sulfur dioxide gas and 1 mole of water molecule.

Hence, the gas formed by the reaction of sodium sulfite and hydrochloric acid is [tex]SO_2[/tex]

The gas formed by the reaction of [tex]{\text{N}}{{\text{a}}_{\text{2}}}{\text{S}}{{\text{O}}_3}[/tex] with HCl is [tex]\boxed{{\text{S}}{{\text{O}}_2}}[/tex]

Further Explanation:

The five types of chemical reactions are as follows:

1. Combination reactions:

These reactions are also known as a synthesis reaction. These are the reaction in which two or more reactants combine to form single product. These are generally accompanied by the release of heat so they are exothermic reactions.

Examples of combination reactions are as follows:

(a) [tex]{\text{Ba}}+{{\text{F}}_2}\to{\text{Ba}}{{\text{F}}_2}[/tex]

(b) [tex]{\text{CaO}}+{{\text{H}}_2}{\text{O}}\to{\text{Ca}}{\left({{\text{OH}}}\right)_2}[/tex]

2. Decomposition reactions:

The opposite of combination reactions is called a decomposition reaction. Here, a single reactant gets broken into two or more products. Such reactions are usually endothermic because energy is required to break the existing bonds between the reactant molecules.

Examples of decomposition reactions are as follows:

(a) [tex]2{{\text{H}}_2}{{\text{O}}_2}\to2{{\text{H}}_2}{\text{O}}+{{\text{O}}_2}[/tex]

(b) [tex]2{\text{NaCl}} \to{\text{2Na+C}}{{\text{l}}_2}[/tex]

3. Displacement reactions

Also known as replacement or metathesis reactions. Here, one of the reactants gets replaced by the other one. Generally, the more reactive element displaces the less reactive element. Both metals and non-metals can take part in displacement reactions.

Examples of displacement reactions are as follows:

(a) [tex]{\text{Cu}}+{\text{AgN}}{{\text{O}}_3}\to{\text{Ag}}+{\text{Cu}}{\left({{\text{N}}{{\text{O}}_3}}\right)_2}[/tex]

(b) [tex]{\text{C}}{{\text{l}}_2}+{\text{KBr}}\to{\text{B}}{{\text{r}}_2}+{\text{KCl}}[/tex]

4. Double displacement reactions

These are the reaction in which ions of two compound interchange with each other to form the product. For example, the general double displacement reaction between two compound AX and BY is as follows:

[tex]{\text{AX}}+{\text{BY}}\to{\text{AY}}+{\text{BX}}[/tex]

Examples of double displacement reactions are as follows:

(a) [tex]{\text{N}}{{\text{a}}_2}{\text{S}}+{\text{HCl}}\to{\text{NaCl}}+{{\text{H}}_2}{\text{S}}[/tex]

(b) [tex]2{\text{KOH}}+{\text{Cu}}{\left({{\text{N}}{{\text{O}}_{\text{3}}}}\right)_2}\to2{\text{KN}}{{\text{O}}_3}+{\text{Cu}}{\left({{\text{OH}}}\right)_2}[/tex]

5. Combustion reactions:

These are the reactions that take place when hydrocarbons are burnt in the presence of oxygen to form carbon dioxide and water. These are also referred to burning.  

Example of combustion reactions are as follows:

(a) [tex]{\text{C}}{{\text{H}}_4}+{{\text{O}}_2}\to{\text{C}}{{\text{O}}_2}+{{\text{H}}_2}{\text{O}}[/tex]

(b) [tex]{{\text{C}}_{10}}{{\text{H}}_{14}}+12{{\text{O}}_2}\to10{\text{C}}{{\text{O}}_2}+4{{\text{H}}_2}{\text{O}}[/tex]

The given reaction occurs as follows:

[tex]{\text{N}}{{\text{a}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{3}}}\left(s\right)+{\text{2HCl}}\left({aq}\right)\to{\text{2NaCl}}\left({aq}\right)+{\text{S}}{{\text{O}}_{\text{2}}}\left(g\right)+{{\text{H}}_{\text{2}}}{\text{O}}\left(l\right)[/tex]

This is an example of a double displacement reaction. Here [tex]{\text{N}}{{\text{a}}_{\text{2}}}{\text{S}}{{\text{O}}_3}[/tex] reacts with HCl to form NaCl, [tex]{\text{S}}{{\text{O}}_2}[/tex] and [tex]{{\text{H}}_{\text{2}}}{\text{O}}[/tex] . Of all the products formed, NaCl is present in the aqueous phase, [tex]{{\text{H}}_{\text{2}}}{\text{O}}[/tex] is in liquid state and [tex]{\text{S}}{{\text{O}}_2}[/tex] is in gaseous state.

So the gas formed in the above reaction is [tex]{\mathbf{S}}{{\mathbf{O}}_{\mathbf{2}}}[/tex] .

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Answer details:

Grade: High School

Subject: Chemistry

Chapter: Chemical reaction and equation

Keywords: SO2, Na2SO3, HCl, NaCl, H2O, double displacement reaction, combination reaction, combustion reaction, displacement reaction, decomposition reaction, aqueous, liquid, gaseous state.

Answer: C

Explanation: Just took the test.

Answer: Option (A) is the correct answer.

Explanation:

A transition element is defined as the element which has incompletely filled d-orbital.

For example, atomic number of chromium is 24 and its electronic configuration is [tex][Ar]4s^{1}3d^{5}[/tex].

Also, sometimes the s-orbital is completely filled and sometimes it is half-filled.

Hence, we can conclude that a single factor that classifies an element as a transition metal is that the  highest occupied orbital is a "d" orbital.

Final answer:

According to Boyle's Law, when the temperature and amount of gas are kept constant, the product of the initial pressure and initial volume is equal to the product of the final pressure and final volume. By plugging in the given values and solving the equation, the new volume is determined to be 1.29 liters.

Explanation:

To solve this problem, we can use the relationship between pressure and volume described by Boyle's Law. According to Boyle's Law, when the temperature and amount of gas are kept constant, the product of the initial pressure and initial volume is equal to the product of the final pressure and final volume.

Mathematically, this can be represented as P1 * V1 = P2 * V2, where P1 and V1 are the initial pressure and volume, and P2 and V2 are the final pressure and volume.

In this case, the initial pressure is 1.1 atm and the initial volume is 4.0 L. If we increase the pressure to 3.4 atm, we can plug these values into the equation to find the new volume:

(1.1 atm) * (4.0 L) = (3.4 atm) * (V2)

Solving for V2, we divide both sides of the equation by 3.4 atm:

V2 = (1.1 atm * 4.0 L) / 3.4 atm = 1.29 L

Therefore, the new volume will be 1.29 liters.

The compound  [tex]AlCl_3[/tex] is an ionic compound (metal and nonmetal) and therefore does not require prefixes so  [tex]AlCl_3[/tex] is aluminum chloride.

[tex]NCl_3[/tex] is a molecular compound (two or more nonmetals), and therefore in its name prefixes indicate the number of each type of atom so

[tex]NCl_3[/tex] is nitrogen trichloride.

                        cation name: potassium ion

                        anion name: chloride

                        compound name: potassium chloride

        mono - 1                         hexa - 6

        di - 2                               hepta - 7

        tri - 3                               octa - 8

        tetra - 4                           nona - 9

        penta - 5                         deca - 10

                        no. of carbon atom = 1 (mono-)

                        no. of oxygen atom = 2 (di-)

                        name of the compound: carbon dioxide

Keywords: nomenclature, ionic, molecular

AlCl3 is an ionic compound, which means that the aluminium cation and chlorine anion make up its structure. Strong electrostatic forces hold the two elements' strong ionic connection together.

Because of this, the compound's name just needs to include the prefix aluminium chloride. However, the substance NCl3 is a molecular molecule, which means that it is made up of two non-metals, namely nitrogen and chlorine.

Prefixes are needed in the name of this element to denote the number of each kind of atom present since the link between these two elements is weaker than the ionic interaction between aluminium and chlorine. Thus, the substance is sometimes referred to as nitrogen trichloride.

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