A company known as Arten industries is wanting to build a factory in the watershed that is pictured.The company wants to limit the ecological impact it has on surrounding areas where should the company build its factory

Answer:

Zinc

Zinc blende

(ZnS)

-----------------

Lead

Galena

(PbS)

-----------------

Mercury

Cinnabar

(HgS)

----------------

Copper

Copper glance

(Cu2S)

-------------------

Explanation:

Had to learn this for a test

Also, I plead the 5th

Answer:high pressure system and cold fronts

Explanation:

High pressure develops in areas where air cools and sinks. This usually causes fair weather with cool temperatures and few clouds.

Cold fronts occur when warm air is pushed up into the atmosphere by colder air at the ground. These fronts tend to move faster than the other types of fronts and are associated with the most violent types of weather such as severe and super cell thunderstorms, although any type of front can produce these same storms. After a cold front passes it is common to have clear skies and a dramatic change in wind direction on top of the cooler air associated with the front itself.

Answer:

This relates to Boyle's Law.

Pressure is inversely related to Volume

Its is an Indirect Relationship. When One increases....The other decreases.

OPTION B IS YOUR ANSWER.

HAVE A GREAT DAY!

Answer:

2HNO3 (aq) + Na2CO3 (aq) → 2NaNO3 (aq) + CO2 (g) + H2O (l)

Explanation:

This question is asking to write and balance an equation between between aqueous sodium carbonate (Na2CO3) and aqueous nitric acid (HNO3). The equation is as follows:

HNO3 (aq) + Na2CO3 (aq) → NaNO3 (aq) + CO2 (g) + H2O (l)

However, this equation is not balanced as the number of atoms of each element must be the same on both sides of the equation. To balance the equation, one will make use of coefficients as follows:

2HNO3 (aq) + Na2CO3 (aq) → 2NaNO3 (aq) + CO2 (g) + H2O (l)

the answer is 2 and 4 earth's atmosphere containing oxygen and nitrogen is essential for life and the surface temperature is also essential

Answer:

1. physical property

2. chemical property

3. physical change

hope this helps

Answer:

D)subscript of C in molecular formula = n x subscript of C in empirical formula

Explanation:

THIS IS THE COMPLETE QUESTION BELOW;

.The empirical formula for a compound is CH2. If n is a whole number, which shows a correct relationship between the molecular formula and the empirical formula? a)<br /><br /> empirical formula mass / molecular mass = n<br /><br /> B) molecular mass = element mass / empirical formula mass ´ 100<br /><br /> c) subscript of H in empirical formula = 2  subscript of H in molecular formula<br /><br /> D) subscript of C in molecular formula = n  subscript of C in empirical formula<br /><br />

An empirical formula can be regarded as "shorten form" of a molecular formula. Instance of this is

A compounds CH4, C2H8, C4H12... with empirical formula of CH4. In this case a constant "n" represent the difference that exist between empirical formula and molecular formula, "n" which is a whole number, molecular formula is the numerator.

Therefore, subscript of C in molecular formula = n x subscript of C in empirical formula

Answer: The mass of manganese(III) oxide produced is 113.03 g

Explanation:

The number of moles is defined as the ratio of the mass of a substance to its molar mass. The equation used is:

[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}[/tex] ......(1)

Given mass of zinc = 46.8 g

Molar mass of zinc = 65.38 g/mol

Plugging values in equation 1:

[tex]\text{Moles of zinc}=\frac{46.8g}{65.38g/mol}=0.716 mol[/tex]

The given chemical equation follows:

[tex]Zn+2MnO_2+H_2O\rightarrow Zn(OH)_2+Mn_2O_3[/tex]

By the stoichiometry of the reaction:

If 1 mole of zinc produces 1 mole of manganese(III) oxide

So, 0.716 moles of zinc will produce = [tex]\frac{1}{1}\times 0.716=0.716mol[/tex] of manganese(III) oxide

Molar mass of manganese(III) oxide = 157.87 g/mol

Plugging values in equation 1:

[tex]\text{Mass of manganese(III) oxide}=(0.716mol\times 157.87g/mol)=113.03g[/tex]

Hence, the mass of manganese(III) oxide produced is 113.03 g

Answer:

(a): The balloon will contain [tex]\frac{X}{2}[/tex] number of molecules now.

(b): The gas law associated with this is Avogadro's law.

Explanation:

Avogadro's law states that the volume of the gas is directly proportional to the number of moles of the gas at constant pressure and temperature

Mathematically,

[tex]V\propto n[/tex]                   (At constant pressure and temperature)

OR

[tex]\frac{V_1}{n_1}=\frac{V_2}{n_2}[/tex]               .....(1)

where,

[tex]V_1\text{ and }n_1[/tex] = Initial volume and number of moles

[tex]V_2\text{ and }n_2[/tex] = Final volume and number of moles

We are given:

[tex]V_2=\frac{V_1}{2}[/tex]

Putting values in equation 1, we get:

[tex]\frac{V_1}{n_1}=\frac{V_1}{2\times n_2}\\\\n_2=\frac{n_1}{2}[/tex]

(a):

If [tex]n_1[/tex] number of moles of gas contains X number of molecules

So, [tex]\frac{n_1}{2}[/tex] number of moles of gas will contain = [tex]\frac{X}{n_1}\times {n_1}{2}=\frac{X}{2}[/tex] number of molecules

Hence, the balloon will contain [tex]\frac{X}{2}[/tex] number of molecules now.

(b): The law used is Avogadro's law.

Answer: Van't Hoff factor, i is less than expected from the formula of the compound and this decreases the effective concentration of particles.

Explanation:

Strong electrolytes are defined as the solutions which completely dissociate into their ions.

But, most of the strong electrolytes do not dissociate completely (act ideally) but remain partially undissociated into the ions. Thus, giving a lesser number of ions in the solution than expected.

This means that the Van't Hoff factor, i which denotes the number of ions is less than expected.

As fewer ions are released in the solution, the concentration of the solution is expected to decrease.

Hence, van't Hoff factor, i is less than expected from the formula of the compound and this decreases the effective concentration of particles.

Answer: The correct option is A) 0.068 m

Explanation:

Molality is defined as the amount of solute expressed in the number of moles present per kilogram of solvent. The units of molarity are mol/kg. The formula used to calculate molarity:

[tex]\text{Molality of solution}=\frac{\text{Given mass of solute}}{\text{Molar mass of solute}\times \text{Mass of solvent (in kg)}}[/tex] .....(1)

We are given:

Given mass of NaCl = 120 g

Molar mass of NaCl = 58.45 g/mol

Mass of solvent = 30 kg

Putting values in equation 1, we get:

[tex]\text{Molality of NaCl}=\frac{120}{58.44\times 30}\\\\\text{Molality of NaCl}=0.068m[/tex]

Hence, the correct option is A) 0.068 m

Answer:

Yup, I believe so.

Explanation:

Answer:

C6H12O6+6O2=6Co2+6H2o

The balanced chemical equation for the reaction of glucose (C₆H₁₂O₆) with oxygen gas to produce carbon dioxide gas and water vapor is C₆H₁₂O₆  + 6O₂ → 6CO₂ + 6H₂O

The balanced chemical equation is the equation in which the number of atoms on the left hand side that is reactant side is equal to the number of atoms on the right hand side that is product side in an equation.

The balanced chemical equation is:

C₆H₁₂O₆  + 6O₂ → 6CO₂ + 6H₂O

Thus, from the above conclusion we can say that The balanced chemical equation for the reaction of glucose (C₆H₁₂O₆) with oxygen gas to produce carbon dioxide gas and water vapor is C₆H₁₂O₆  + 6O₂ → 6CO₂ + 6H₂O

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Answer:

4.716x10^25

Explanation:

1 molecule of water is equivalent to 6.02x10^23

hence 78.34 is equivalent to 78.34x6.02x10^23

and the answer is 4.716x10^25

Answer:

In addition, the number of valence electrons present in the elements of these groups denotes the group. The valence electrons present in their elements reflect their particular group, which is why they are termed representative elements.

Explanation:

Answer:

At temperatures below 924.93K.

Explanation:

Hello there!

In this case, according to the thermodynamic definition of the Gibbs free energy of reaction:

[tex]\Delta G=\Delta H-T\Delta S[/tex]

Now, for us to determine the correct temperature range, we must make ΔG=0 and solve for T:

[tex]T=\frac{\Delta H}{\Delta S} =\frac{-75kJ/mol}{-0.081kJ/mol-K}\\\\T=925.93K[/tex]

Thus at temperatures below 925.93 K we will have an spontaneous reaction (ΔG<0).

Regards!

Answer:

A

Explanation:

In the Brønsted-Lowry definition of acids and bases, a conjugate acid-base pair consists of two substances that differ only by the presence of a proton (H⁺).

Answer:

B

Explanation:

reaction order is simply the sum of orders for each reactant.

The rate of a reaction is calculated using the concentrations of reactants and is denoted as option B.

This is a type of relationship which depicts comparison of reaction rates with the reactant concentrations.

This is because the reactants are the ones involved in a chemical reaction to form products.

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Answer:

See explanation

Explanation:

Light is a form of energy. Both ultraviolet light and xrays are part of the electromagnetic spectrum.

As was said in the question, ultraviolet rays is absorbed by the rubber. We must know that prolonged exposure of this piece of rubber to incident ultraviolet light causes the vaporization of volatile materials in the rubber.

When volatile materials in the rubber vaporize, the rubber can become solid. Thus, ultraviolet light can cause rubber to become solid.

However, not all types of light can do this hence it does matter the type of light that falls on the rubber material.

Answer:

456789

Explanation:

Answer:

Hexanal, once commonly called caproic aldehyde, is a six-carbon straight-chain aldehyde. It is a clear liquid with an atmospheric-pressure boiling point of 131 ºC

Answer:

the answer is B the biggest one

Explanation:

Answer:

The answer to the question is C

The equation which is an expression of the rate law is: Rate = K[A]”[B]". Thus, the correct option will be C.

A rate law of a chemical equation shows how the rate of a chemical reaction depends on the concentration of reactant molecules. For a chemical reaction such as aA → products, the rate law of the reaction generally has the form rate = k[A]ⁿ, where k is a proportionality constant which is called as the rate constant and n is the order of the reaction with respect to A reactant.

The rate law of a chemical reaction contains only one concentration term which is raised to the first power. Hence the rate constant of a reaction must have units of reciprocal seconds (s⁻¹) to have units of moles per liter per second for the reaction rate: M·s⁻¹ = M/s.

Therefore, the correct option will be C.

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Answer:

As the kinetic energy of the gaseous solute increases, its molecules have a greater tendency to escape the attraction of the solvent molecules and return to the gas phase. Therefore, the solubility of a gas decreases as the temperature increases.

Explanation:

As the kinetic energy of the gaseous solute increases, its molecules have a greater tendency to escape the attraction of the solvent molecules and return to the gas phase. Therefore, the solubility of a gas decreases as the temperature increases.

The statement which explains the affects to temperature to the rate is that when temperature increases, particles move faster.

Rate of any reaction gives idea about the speed of the completion of any chemical reaction.

Hence, when temperature increases, particles move faster.

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Answer:

See explanation

Explanation:

Period 3 elements include; Na, Mg, Al, Si, P,S,Cl and Ar

Across the period, the chlorides of the elements change from solid to gas. The chlorides of metals are solid while the chlorides of non metals are gaseous.

Also, the chlorides become more volatile across the period. The formulas of the chlorides change from MCl to MCl2 to MCl3 to MCl4, MCl5 and MCl6 respectively across the period where M is a period 3 element.

The pH of the solutions of chlorides of period 3 elements change from neutral to acidic across the period. The pH of the chlorides of metals are neutral while the chlorides of the nonmetals usually yield acid solutions.

Answer:

Lithium chloride + Iron

No reaction takes place, because lithium is more reactive than iron, so Iron cannot displace lithium from its solution.

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Answer:

1 - Biometric

2- Unique

3 - Skin cells

4 - The latent

5 - basal

6 - buckling

Explanation: