I need those problems answered please and thank you

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

Answer:

is this for rp

Explanation:

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:

[tex]from \: the \: equation : \\ 1 \: mole \: of \: methane \: is \: produced \: by \: 2 \: moles \: of \: hydrogen \\ 8.7 \: moles \: of \: methane \: will \: produce \: (8.7 \times 2) \: moles \\ = 17.4 \: moles \\ 1 \: mole \: of \: methane \: weighs \: 16 \: g \\ 17.4 \: moles \: will \: weigh \: (17.4 \times 16) \: g \\ = 278.4 \: g[/tex]

Answer:

where the main questions of these assmesnt

Explanation:

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

can u pls show a picture of it?

Answer:

1.47 × 10^(23)

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:

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.

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:

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

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: 1,480m/s

Explanation:

Answer:

Mg(s) + Pb(NO3)2 (aq) → Mg(NO3)2 (aq) + Pb(s)

Explanation:

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:

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:

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:

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:

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:

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.

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:

i just put a

Explanation:

Answer:

the answer is d, i got it on edge

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.

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:

3, 2, 2,3

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

Answer:

b.

Explanation: brainliest