Calculate the volume occupied by 32.0 g of O2 gas, the pressure of the O2 gas is 78.5 kPa at 25°C.

The issue government must consider before passing conservation policies is : ( B )  cost to implement conservation policies

The cost benefit of the passing and implementation of any government policy plays a very vital role in determining, how and when the government will pass the policy.

The conservation policies help to conserve our environment and retain natural habitats of organisms. therefore the cost effect of implementing the policies is a very important factor that must be considered by the government

Hence we can conclude that The issue government must consider before passing conservation policies is cost to implement conservation policies

Learn more about conservation policies : https://brainly.com/question/1619465

Answer:

It emits hydrogen sulfide...smells like rotten eggs..

ty:)pls let me know whether this is ryt:D

Answer:

Hey!

Your answer is that it creates hydrogen sulfide gas / liquid...

Which really smells...

Explanation:

HOPE THIS HELPS!

Answer:

The answer is C

Explanation:

Aluminium oxide is an amphoteric oxide.

MgO is a basic oxide.

N2O is an acidic oxide.

SO2 is an acidic oxide.

Answer:

-169°C to -104°C

Explanation:

Ethene, also known as ethylene exists in solid, liquid and gaseous states. Ethene is an aliens with condensed structural formula C2H4. Athens is a colourless gas. It is flammable and is also a sweet smelling gas in its pure form. It is the monomer in the production of polyethylene which is of great importance in the plastic industry. In agriculture, it is used to induce the ripening of fruits. It can be hydrated in order to produce ethanol.

The liquid range of ethene refers to the temperatures at which ethene is found in the liquid state of matter. It is actually the difference between the melting point and the boiling points of ethene. Hence the liquid range of ethene is -169°C to -104°C

Answer:

The substance reduced is oxygen.

Hope this helps.

Answer:

Oxygen is reduced

Explanation:

This is because when oxygen is changing to Sodium oxide , metal is added . The addition of the metal there is reduction in this sense oxygen is reduced but with the sodium , oxygen is being added to the sodium hence sodium is oxidized

Answer:

The entropy of this reaction (ΔS) = -187.9 J/K

Explanation:

.Step : Data given

ΔS = -187.9 J/K

ΔH = -198.4 kJ

T = 297.0 K

Step 2: The balanced equation

2SO2(g) + O2(g) → 2SO3(g)

Step 3: Calculate the entropy

ΔG = ΔH - TΔS

⇒ΔG = the gibbs free energy

⇒ΔH = the change in enthalpy of the reaction = -198.4 kJ

⇒with T = the temperature = 297.0 K

⇒with ΔS = the change of entropy =  -187.9 J/K

ΔG = -198400 kJ -297*(-187.9kJ/mol)

ΔG = -198400+55806.3

ΔG = - 142593.7 kJ = the gibbs free energy

The entropy of this reaction (ΔS) = -187.9 J/K

Answer:

C. -187.9 J/K

Explanation:

Entropy is just ΔS, which it gives you in the question as -187.9 J/K.

Answer: When the enthalpy of this overall chemical equation is calculated, the enthalpy of the second intermediate equation is halved and has its sign changed.

Explanation:

Hess’s law of constant heat summation states that the amount of heat absorbed or evolved in a given chemical equation remains the same whether the process occurs in one step or several steps.

According to this law, the chemical equation is treated as ordinary algebraic expressions and can be added or subtracted to yield the required equation. This means that the enthalpy change of the overall reaction is equal to the sum of the enthalpy changes of the intermediate reactions.

The overall chemical reaction follows:

[tex]CaO(s)+CO_2\rightarrow CaCO_3(s)[/tex]     [tex]\Delta H^o_{rxn}=?[/tex]

The intermediate balanced chemical reaction are:

(1) [tex]Ca(s)+CO_2(g)+\frac{1}{2}O_2(g)\rightarrow CaCO_3(s)[/tex]    [tex]\Delta H_1=-812.8kJ[/tex]  

(2) [tex]2Ca(s)+O_2(g)\rightarrow 2CaO(s)[/tex]     [tex]\Delta H_2=-1269kJ[/tex]

The expression for enthalpy of the reaction follows:

[tex]\Delta H^o_{rxn}=[1\times (\Delta H_1)]+[\frac{1}{2}\times (-\Delta H_2)][/tex]

Hence, when the enthalpy of this overall chemical equation is calculated, the enthalpy of the second intermediate equation is halved and has its sign changed.

Answer:

A. is halved and has its sign changed.

Explanation:

just took the test on edge

Answer:

Line 3 is incorrect

Explanation:

In line 3, the statements should be switched. Chemical reactions involve small amounts of energy and nuclear reactions involve enourmous amounts of energy. Lines 1 and 2 are correct.

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Answer:

Line 3 is incorrect

Explanation:

i took the test and got it right

Answer:

it is Ph of solution that tells you the acdic and basic nature of solution

if PH is lower than 7 the soution is acidic and if PH is larger than 7  the solution is basic

Explanation:

Answer:

A. Ph

Explanation:

Answer:

They are all alkali earth metals.

Explanation:

Their valence shell each has 2 electrons. Also, they are all shiny, silvery-white, somewhat reactive metals at standard temperature and pressure. They form alkaline solutions, hydroxides, when reacting with water and their oxides are found in the earth’s crust.

Answer:

magnesium (Mg)

Explanation:

Answer:

this is the answer

Explanation:

If someone tells Atomic mass of oxygen is 16, then it means that One the mass of an atom of a oxygen expressed in atomic mass units is 16 It is approximately equivalent to the number of protons and neutrons in the atom of oxygen (the mass number) or to the average number allowing for the relative abundances of different isotopes of oxygen.

Atomic mass Of oxygen is 15.99u or 15.99 amu.

And the mass no. Of oxygen is 16 because total no. Of protons and neutrons (in oxygen 16) is 16.

8 protons+ 8neutrons

So we can say that mass no. And atomic mass are different things.

Then, the atomic mass of oxygen is not 16 rather 15.99amu or 15.99u

Answer: The total pressure of the mixture is 2.76 atm

Explanation:

According to Dalton's law, the total pressure is the sum of individual pressures.

[tex]p_{total}=p_A+p_B+p_C...[/tex]

Given : [tex]p_{total}[/tex] =total pressure of gases = ?

[tex]p_{O_2}[/tex] = partial pressure of oxygen = 0.00461 atm

[tex]p_{N_2}[/tex] = partial pressure of nitrogen = 1.78 atm

[tex]p_{Ar}[/tex] = partial pressure of argon = 0.975 atm

putting in the values we get:

[tex]p_{total}=0.00461atm+1.78atm+0.975atm[/tex]

[tex]p_{total}=2.76atm[/tex]

Thus the total pressure of the mixture is 2.76 atm

Answer:

Explanation:

1) Chemical change :

It is permanent change.

Heat or energy is given out during the process

Physical change :

It is a temporary change.

Heat or energy in not given out during the process.

2) Condensation of water vapour is a physical change.

hope this helps

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Answer:

i. The difference between physical and chemical change is that a physical change merely changes the shape and size of the substance while a chemical change produces altogether new substance.

ii condensation of water vapour is a physical change

Explanation:

Answer:

You have 1680 grams of urea. It means (in it) there are 787 grams of nitrogen, 112 grams of hydrogen, 336 grams of carbon, and 448 grams of oxygen.

Explanation:

Answer:

Oxygen Doesn't change

However, Li is oxidized (0 to +1), Na is reduced (+1 to 0)

Explanation:

On reactant side, Oxygen has -2 oxidation charge because we know common oxidation states such as oxygen -2, hydrogen +1 etc.

So NaOH, O is -2, H is +1, so Na has to be +1 to equal total charge of compound

In product side, LiOH, again O has to be -2, H is +1, so Li +1 as well..

We see that oxygen oxidation state doesn't change. However, for Li it becomes oxidized going from 0 to +1 whereas, Na is reduced going from +1 to 0.

Answer:

Fabric is made of cotton.

Explanation:

Hope that helps :)

Answer:

Hey mate your answer is

cotton

hope it helps you

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Answer:

It's A) magnesium bromide

Explanation:

The name for the compound MgBr2 is magnesium bromide. Mg is the symbol for magnesium, and Br is the symbol for bromine.

I Hope it will help

Answer:

According to research,

The average speed of an object is  the distance traveled divided by the time elapsed(taken).

Velocity and average velocity can be defined as the displacement divided by the time.

Explanation:

Answer:

210

Explanation:

according to vectors since they are in two different direction u minus them

F1 =10 F2=220

F1 has a forward direction

while f2 goes backward

Answer:

-210N

Explanation:

you say acting force minus opposing force 10N-220N= -210N

Answer:

acid rain

Explanation:

When sulfur dioxide combines with water and air, it forms sulfuric acid, which is the main component of acid rain. Acid rain can: cause deforestation.

Answer: Water, alcohols, aldehydes, and ketones.

Explanation:

Answer:

Examples of Partially Miscible and Immiscible Liquids: Illustrations of immiscible liquids are cooking oil and water, milk and oil, gasoline and water, and liquid metals and water. There are as well partially miscible liquids such as honey and water, butanol and water, and potassium chloride and water.

Explanation:

Hope it helps

Answer:

B - Poor crop production

Explanation:

I just did the quiz on Edge 2021

Answer:

b

Explanation:

Answer:

this option is the correct they move to an area with lower oxygen concentration because gas molecules can pass through semi-permeable and do not need transport proteins for the movement

Explanation:

i hope this will help you

can confirm that

They move to an area with a lower oxygen concentration

if the correct answer :)))

Explanation:

ape-x

Answer:

112mL

Explanation:

We'll begin by calculating the number of mole in 0.640g of SO2.

This is illustrated below:

Molar mass of SO2 = 32 + (16x2) = 64g/mol

Mass of SO2 = 0.640g

Number of mole of SO2 =.?

Mole = mass /molar mass

Number of mole of SO2 = 0.640/64

Number of mole of SO2 = 0.01 mole

Next, we shall determine the number of mole of O2 required for the reaction. This is illustrated below:

2SO2(g) + O2(g) —> 2SO3(g)

From the balanced equation above,

2 moles of SO2 reacted with 1 mole of O2.

Therefore, 0.01 mole of SO2 will react with = (0.01 x 1)/2 = 0.005 mole of O2.

Therefore, 0.005 mole of O2 is required for the reaction.

Finally, we shall determine the volume of O2 required for the reaction as follow:

Note: 1 mole of a gas occupy 22.4L (22400mL) at stp.

1 mole of O2 occupy 22400mL at stp.

Therefore, 0.005 mole of O2 will occupy = 0.005 x 22400 = 112mL

Therefore, 112mL of O2 is required for the reaction.

Answer:

the answer is C

Explanation:

i did the test on edg and got it right

Answer:

poluição atmosférica

Explanation:

O que eles estão tentando falar na pergunta é que a que termo nos referimos como a introdução de partículas estranhas na forma de suspensão etc. na atmosfera.

Este termo é conhecido como poluição do ar. É chamado assim porque, adulteramos a constituição original do ar, introduzindo esses novos componentes.

Esses componentes introduzidos muitas vezes têm um efeito adverso na composição da qualidade do ar.

Answer:

Nitric acid = HNO3

HNO3 → H+ NO3 2-

Since it's an acid

pH = -log of concentration of H+ ions

pH = -log (H+)

2 = -log(H+)

Taking antilog of both sides

H+ = 10^-2

= 0.01

Concentration of nitric acid = 0.01mol/dm^-3

Hope this helps.

Answer: Its A, provides landmarks, such as buildings

Explanation:

the person above me is wrong </3

Answer:

A (provides landmarks, such as buildings)

Explanation:

Satellite imagery is a useful tool used in GPS and many other forms of digital mapping. It is often extremely detailed and useful for looking at what buildings are where! :))

Answer:

Na3P is Sodium phosphide

Na3PO4 is sodium phosphate

Explanation:

Na3P is a combination of the element sodium

and the element phosphorus.

When writing the chemical formula of compounds , we have to take into consideration the valencies or combining powers of the individual parties, whether single elements or radicals

Under general terms, the valency of sodium is -+1 and its combining form can be written as Na+. While in the case of phosphorus, its own is -3 and its form is P3-.

Now, to write the chemical formula, there has to be an exchange of valencies by the two elements in question. That is why finally, sodium took 3 and phosphorus took 1 and we have Na3P.

Now, for the name phosphide, phosphides are binary compounds that contain phosphorus and a metal . When we talk of binary compounds, we mean compounds that have two elements only. So because sodium is a metal, we have to give the name phosphide to the compound.

Na3PO4

Referencing the explanation made above, but this is a bit different. We have sodium coming in contact with a radical here. The combination it is making here is with the phosphate ion (PO4)3-.

So as usual, there is an exchange of valency and thus sodium takes the 3, while the whole phosphate group take 1. So therefore, the name of the compound is gotten from the combination of the individual parties and it is called sodium phosphate.