For the reaction C + 2H2 → CH4, how many grams of hydrogen are required to produce 8.7 moles of methane, CH4 ?

Answer:

T₂ = 182 K

Explanation:

Given that,

Initial pressure, P₁ = 120 kPa  

Initial temperature, T₁ = 0˚C = 273 K

We need to find the final temperature when the pressure is 80 kPa.

We know that, Gay Lussac's Formula is :

[tex]\dfrac{P_1}{T_1}=\dfrac{P_2}{T_2}\\\\T_2=\dfrac{P_2T_1}{P_1}\\\\T_2=\dfrac{80\ kPa\times 273}{120\ kPa}\\\\T_2=182\ K[/tex]

So, the new temperature is equal to 182 K.

Answer:

1257.03 grams

Explanation:

mass=mole*molar mass

mass=7.4*169.87= 1257.03

The greenhouse effect refers to global warming as a consequence of the accumulation of greenhouse gases.

Greenhouse gases are different types of gaseous elements that trap solar radiation on the Earth's surface.

The most important greenhouse gases include, among others, methane and carbon dioxide (CO2).

In conclusion, the greenhouse effect refers to global warming as a consequence of the accumulation of greenhouse gases.

Learn more about greenhouse gases here:

https://brainly.com/question/20349818

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can u pls show a picture of it?

Answer:

3.1 moles of Iron(III) Oxide

Explanation:

The equation of the reduction of iron III oxide using carbon is shown;

Fe2O3 + 3CO → 2Fe + 3CO2

From the reaction equation;

1 mole of  Iron(III) Oxide yielded 3 moles of carbon dioxide

x moles of Iron(III) Oxide will yield  9.20 moles of carbon dioxide

x = 9.2 moles * 1 mole/3 moles

x = 3.1 moles of Iron(III) Oxide

5

 mL acetic acid

95

mL water

Explanation:

Since

5

%

of the vinegar, by volume, is acetic acid, and we have

100

mL of vinegar, we have

5

mL of vinegar.

Similarly, we have

100

%

−

5

%

=

95

%

being water, so we have

95

mL of water.

Answer:

Salt is any neutral chemical compound made of cations (positive ions) attached to anions (negative ions). The main kind of salt is sodium chloride with the chemical formula NaCl. It is formed when hydrochloric acid is added in sodium hydroxide.

Answer:

1.47 × 10^(23)

Explanation:

air that is cooling will cause the highest pressure

Explanation:

This is because heat has to escape a certain area and if the heat can't escape then more and more pressure will build up in a area.

Answer:

The unknown amount of potassium chloride is 13.6 grams.            

Explanation:

The reaction of 14 grams of KNO₃ with KCl produces a total mass of 27.6 grams of the products.

The law of conservation of mass tells us that the total mass of the reactants must be the same that the total mass of the products. So, we can find the mass of KCl as follows:

[tex] m_{r} = m_{p} [/tex]

Where r is for reactants and p is for products

[tex] m_{KNO_{3}} + m_{KCl} = m_{p} [/tex]

[tex] 14 g + m_{KCl} = 27.6 g [/tex]

[tex] m_{KCl} = 27.6 g - 14 g = 13.6 g [/tex]

Therefore, the unknown amount of potassium chloride is 13.6 grams.           

I hope it helps you!

Answer:

There is one mole in 6.02*10^23 particles of anything ( also CO2)

Answer:

Step-by-step explanation:

We are already given the following formulas :-

[tex]\blue{\alpha + \beta = \dfrac{-b}{a}}[/tex]

[tex]\red{\alpha \times \beta = \dfrac{c}{a}}[/tex]

Given that the polynomial is :-

[tex]\sf{6x^2 + 0x - 3}[/tex]

Now, we will use factorisation as our first weapon :-

6x² -3 = 0 [As we have to find the zeroes of the equation]

6x² = 3

x² = [tex]\dfrac{3}{6}[/tex]

x² = [tex]\dfrac{1}{2}[/tex]

x = [tex]\dfrac{1}{\sqrt{2}}[/tex]

Now, we can take one zero as 1/Root 2 and other -1/root 2

[tex]\dfrac{1}{\sqrt{2}} + \dfrac{-1}{\sqrt{2}} | \dfrac{0}{6} = 0[/tex]

0 |0 Hence verified.

[tex]\dfrac{1}{\sqrt{2}} \times \dfrac{-1}{\sqrt{2}} | \dfrac{-3}{6} = 0[/tex]

[tex]\dfrac{1}{2} | \dfrac{1}{2}[/tex]

Hence, proved.

Answer:

Sulfur would gain electrons

Explanation:

Atoms want to have a complete out valence shell and because sulfur only needs 2 more electrons to complete the outer shell it would take 2 more.

Answer:

Explanation:

Primary and secondary succession occur after both human and natural events that cause drastic change in the makeup of an area. Primary succession occurs in areas where there is no soil and secondary succession occurs in areas where there is soil.

In primary succession, newly exposed or newly formed rock is colonized by living things for the first time. In secondary succession, an area previously occupied by living things is disturbed—disrupted—then recolonized following the disturbance.

Hope this helped :)

-Akito

Answer:

c) evaporating

d) has no salt in it

Explanation:

no problem anytime. just try to understand the concept and it will definitely help if you read the question more than once.

the change of state that is happening the surface of the sea water is evaporating. This is because it allows from liquid to vapour/ gas based on the diagram

the water in the test tube is different from sea water because it is pure meaning no salt. It's evident based on figure 2 because sea water is full of solutions and mixtures.

Answer:

A catalyst is a chemical substance that alters the rate of chemical reaction not consumed by the reaction. Hence, a catalyst can be recovered chen unchanged at the ends of chemical reaction. Catalyst can be divided into two typ the basis whether it speeds up or slowdowns the rate of chemical reaction. The positive catalyst and negative catalyst.

Answer:

A catalyst is a chemical substance thatalters therate of chemical reactions not consumed by the reactions.

I believe the ans is (2) pH = 7.

Explanation:

At the equivalence point, the salt of strong acid and strong base is completely hydrolyzed which gives a neutral solution with pH 7 as H+ ion concentration is equal to OH- ion concentration.

Answer:

where the main questions of these assmesnt

Explanation:

Answer:

i dk how ur school works, but you'll most likely have to take that science again to get the credits u need to graduate

Explanation:

Answer:

is this for rp

Explanation:

Answer:

54 moles

Explanation:

The ratio of AIF3 to CaF2 is, as seen in the equation, 2:3. This means you multiply 36 moles by 3, and then divide it by 2. This equals 54 moles of CaF2.

Answer:

3 M

Explanation:

Molarity equation: M = n/v

n = moles of solute

v = liters of solution

9 moles of NaCl / 3 L

9/3 = 3 M

Answer:

i just put a

Explanation:

Answer:

the answer is d, i got it on edge

Answer: 1,480m/s

Explanation:

Answer:

Inverse relationship between number of covalent bonds and bond length.

Explanation:

There is inverse relationship between number of covalent bonds and bond length which means that if one increases the decreases or the one decreases the increases. When the number of covalent bonds between two atoms increases, the bond length decreases because there are more number of electrons present between the two nuclei, the two nuclei can get closer to each other until both nuclei experience their repulsive force of attraction. In bond of H2S has lower electronegativity value as compared to H2O so the bond length decreases due to attraction of shared pair of electrons by both nuclei.

Answer:

3, 2, 2,3

..........................

Answer:

b.

Explanation: brainliest