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you will research the topic of acid rain on the following ideas . what acid rain is. . causes of acid rain. . effects of acid rain (including humans), plants, water, and structures such as statues, buildings, and bridges. . four ways the effects of acid rain can be minimized At least 200 words, perferably four paragraphs

Answer:

E°(Ag⁺/Fe°) = 0.836 volt

Explanation:

3Ag⁺ + 3e⁻ => Ag°;            E° = +0.800 volt

Fe° => Fe⁺³ + 3e⁻ ;             E° = -0.036 volt

_________________________________

Fe°(s) + 3Ag⁺(aq) => Fe⁺³(aq) + 3Ag°(s) ...    

E°(Ag⁺/Fe°) = E°(Ag⁺) - E°(Fe°) = 0.800v - ( -0.036v) = 0.836 volt

Answer

The type of structural formula for each of the hydrocarbons given are shown below:

(a) Propyne (expanded):

(b) 2,2-dimethybutane (skeletal):

(c) Benzene (line-and-angle)

:

(d) Heptane (condensed)

CH₃CH₂CH₂CH₂CH₂CH₂CH₃

Answer:

The water cycle is often taught as a simple circular cycle of evaporation, condensation, and precipitation. Although this can be a useful ...

Explanation:

Answer: Your answer will be D)

Explanation: Hope this helped

The two atoms are isotopes of each other are Si with a mass number of 27 and an atomic number 14, and Mg with a mass number of 25 and an atomic number of 12. The correct option is A.

Isotopes are atoms with the same number of protons but differing numbers of neutrons.

They differ in mass, which affects their physical characteristics even if they have nearly identical chemical properties.

An isotope is one of two or more chemical elements that exist in different forms. Varied isotopes of an element share the same atomic number and protons in their nuclei, giving them the same atomic weight.

However, each elemental isotope has a different amount of neutrons, which changes its atomic weight.

They can be referred to as isotopes because Si, which has a mass number of 27 and an atomic number of 14, and Mg, which has a mass number of 25 and an atomic number of 12, both have 13 protons.

Thus, the correct option is A.

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Answer:

m = 97.9 g

Explanation:

Given data:

Volume of water = 97.90 mL

Density of water = 1.00 g/mL

Mass of water  = ?

Solution:

Density:

Density is equal to the mass of substance divided by its volume.

Units:

SI unit of density is Kg/m3.

Other units are given below,

g/cm3, g/mL , kg/L

Formula:

D=m/v

D= density

m=mass

V=volume

by putting values,

1.00 g/mL = m / 97.90 mL

m = 1.00 g/mL × 97.90 mL

m = 97.90 g

Mass in three significant figures:

m = 97.9 g

Answer:

ΔG = -24.7kJ/mol

Explanation:

ΔG° of

Pb2+(aq) + 2Br-(aq) ⇄ PbBr2(s)

is:

ΔG° PbBr2 - (2*ΔG°Br- + ΔG°Pb2+)

-261.9kJ/mol - (2*-104.0kJ/mol + -24.4kJ/mol) =  

-29.5kJ/mol

ΔG of the reaction is:

ΔG = ΔG° + RT lnQ

Where R is gas constant (8.314x10⁻³kJ/molK)

T is absolute temperature (20°C + 273.15 = 293.15K)

Q is reaction quotient = 1 / [Pb²⁺][Br⁻]²

Replacing:

ΔG = -29.5kJ/mol + 8.314x10⁻³kJ/molK*293.15K ln(1 / [Pb²⁺][Br⁻]²)

ΔG = -29.5kJ/mol + 8.314x10⁻³kJ/molK*293.15K ln(1 / [0.247M][0.758M]²)

Energy will always affect the appearance of the lake because it is made up of water which is subject to physical changes.

Phase transition occurs in the three states of matter which include: solid, liquid and gas.

The lake is made up of water and so therefore would undergo phase transition based on the level of energy.l

During high energy, there is increase in kinetic energy between the molecule of water that makes up for he lake.

This may lead to total evaporation or decrease in the amount of lake water.

During low energy, there is reduction of kinetic energy between the molecule of water that makes up for he lake leading to its freezing.

Therefore, energy will always affect the appearance of the lake because it is made up of water which is subject to physical changes.

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Transition metals

Most transition metals differ from the metals of Groups 1, 2, and 13 in that they are capable of forming more than one cation with different ionic charges. As an example, iron commonly forms two different ions

The given chemical equation, 2N₂ + 3H₂ <==>2NH3, is an example of a reversible reaction.option A.

The double arrows between the reactants and products indicate that the reaction can proceed in both directions, forming both products and reactants.The reversible reaction, also known as a chemical equilibrium reaction, refers to a chemical reaction that can occur in both forward and reverse directions. It occurs when reactants are converted into products, and the products are also converted back into the original reactants.A reversible reaction can be identified by the symbol “<==>” or “⇌” that appears between the reactants and products in the chemical equation. It denotes that the reaction is in a state of chemical equilibrium. When the reactants and products have achieved equilibrium, the rate of the forward and reverse reactions is equal, and there is no further net change in the amounts of the reactants and products.A combustion reaction is a type of exothermic reaction in which a substance reacts with an oxidizing agent to produce heat and light. A one-way reaction is a type of reaction that occurs in only one direction and cannot be reversed without significant changes to the reaction conditions, such as changing the temperature or pressure.A reversible reaction, unlike a one-way reaction, can occur in both directions and reach equilibrium when the forward and reverse reaction rates are equal.option A.

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Answer:

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question

volume of object = 7 cm³

density = 5 g/cm³

The mass of the object is

mass = 5 × 7

We have the final answer as

Hope this helps you

Answer:

In this case, by using the Avogadro's number ,one can compute the required amount of aluminium atoms as shown below considering that one mole of aluminium equals 6.022x10²³ atoms of aluminum:

Explanation:

Answer:

The concentration of this solution in units of pounds per gallon is \(2.776*10^{-5} \frac{lb}{gal}\)

Explanation:

Units of measurement are established models for measuring different quantities. The conversion of units is the transformation of a quantity, expressed in a certain unit of measure, into an equivalent one, which may or may not be of the same system of units.

In this case, the conversion of units is carried out knowing that 1 μg are equal to 2.205*10⁻⁹ Lb and  1 mL equals 0.00022 Gallons. So

\(2.77 \frac{ug}{mL} = \frac{2.77 ug}{mL}\)

If 1 μg equals 2.205*10⁻⁹  lb, 2.77 μg how many lb equals?

\(lb=\frac{2.77ug*2.205*10^{-9}lb }{1ug}\)

lb=6.10785*10⁻⁹

So, 2.77 μg= 6.10785*10⁻⁹ lb

Then:

\(2.77 \frac{ug}{mL} = \frac{2.77 ug}{mL}=\frac{6.10785*10^{-9}lb }{mL} =\frac{6.10785*10^{-9}lb }{0.00022 gal} =\frac{6.10785*10^{-9}lb }{0.00022 gal}\)

You get:

\(2.77 \frac{ug}{mL} = 2.776*10^{-5} \frac{lb}{gal}\)

The concentration of this solution in units of pounds per gallon is \(2.776*10^{-5} \frac{lb}{gal}\)

The daughter isotope (a decay product)of O-15 = N-15(Nitrogen 15)

Radioactivity is the process of unstable isotopes to stable isotopes by decay, by emitting certain particles,  

O-15 emits positron particles ₁e⁰, so the atomic number decreases by 1, the mass number is the same

Reaction

 \(\tt _8^{15}O\Rightarrow _7^{15}N+_1^0e\)

The mass number of the daughter isotope = 15, atomic number = 7

If we look at the periodic system, the element with atomic number 7 is Nitrogen (N)

Answer

0 gram

Explination

1 liter of oxygen in grams 1 liter of oxygen equals 0 gram

The mass of the cereal that you would need to consume can be obtained as 84.8 g

The number of moles, denoted by the symbol "n," is a fundamental unit of measurement in chemistry that represents the amount of a substance. It is used to quantify the quantity of atoms, molecules, or ions in a sample.

Number of moles of sucrose in the cereal = 11g/342 g/mol

= 0.03 moles

Now;

0.03 moles of sucrose is contained in 60 g of cereal

0.0424 moles of sucrose would contain 0.0424 moles * 60 g/0.03 moles

= 84.8 g

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Iron is extracted from iron ore in a huge container called a blast furnace. Iron ores such as hematite contain iron(III) oxide, Fe2O3. The oxygen must be removed from the iron(III) oxide in order to leave the iron behind. Reactions in which oxygen is removed are called reduction reactions.

Carbon is more reactive than iron, so it can displace iron from iron(III) oxide. Here are the equations for the reaction.

Step 1 – Hot air (oxygen) reacts with the coke (carbon) to produce carbon dioxide and heat energy to heat up the furnace.

C(s) + O2(g) → CO2(g)

Step 2 – More coke is added to the furnace and reduces the carbon dioxide into carbon monoxide, a good reducing agent.

CO2(g) + C(s) → 2CO(g)

Step 3 – iron(III) oxide is reduced.

iron(III) oxide + carbon → iron + carbon dioxide

2Fe2O3(s) + 3C(s) → 4Fe(l) + 3CO2(g)

In this reaction, the iron(III) oxide is reduced to iron, and the carbon is oxidized to carbon dioxide.

In the blast furnace, it is so hot that carbon monoxide can be used, in place of carbon, to reduce the iron(III) oxide:

iron(III) oxide + carbon monoxide → iron + carbon dioxide

Fe2O3(s) + 3CO(g) → 2Fe(l) + 3CO2(g)

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