If the reaction occurs between Fe2S3(s) and H(aq) and the equation is properly balanced with the
smallest whole-number coefficients, what is the sum of the coefficients for all reactants and products?
Fe2S3(s) + H+ (aq)

Please answer this mathematically.

Answer:

A: Train I had the fastest average speed

C: Trains II and V had the same average speed

E: Trains III and IV had the same average speed

Explanation:

Answer:

if you subtract 88 from 226 you get 138

so uour answer would be C.

Answer:

138

the conversion of an atom of one element into a different element through nuclear changes

A nuclear equation is balanced according to mass number. A chemical equation is balanced according to the total mass before and after the change

82

Some of the matter is converted to energy

Explanation:

I've used this website enough I think its time for me to give back.

The elements should be label as follows yellow = OH, blue = Fe, green = Ba, red = Cl

The mix between aqueous barium hydroxide and aqueous iron chloride leads to barium chloride and iron hydroxide. This reaction is shown below:

Moreover, in these products, the iron hydroxide will form a solid substance that precipitates in the bottom of the container, while the barium chloride is more likely to maintain its liquid state.

According to this, the substance in the bottom is the iron hydroxide or Fe (OH)2, and in this, the yellow dots represent the Hydroxide or OH, while the blue dots are the Iron considering there in iron hydroxide there are two molecules of OH for each molecule of iron.

On the other hand, at the top, there is the barium chloride or BaCl2. This means the green dots are the Barium and the red ones are the Chlorine as there should be more Chlorine particles than Barium ones

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There are 2.72 kilograms of nitrogen present in a 3.50 L sample of N₂O.

To find the mass of nitrogen in N₂O, we must calculate the number of moles of N₂O.  

[tex] n_{N_{2}O} = \frac{m_{N_{2}O}}{M{N_{2}O}} [/tex]  (1)

Where:

[tex] m_{N_{2}O}[/tex]: is the mass of N₂O

[tex]M_{N_{2}O}[/tex]: is the molar mass of N₂O = 44.013 g/mol

The mass of N₂O can be founded from the density:

[tex] d = \frac{m}{V} [/tex] (2)

Where:

d: is the density of N₂O = 1.22 g/mL

V: is the volume = 3.50 L = 3500 mL

Then, the mass of N₂O is (eq 2):

[tex] m = d*V = 1.22 g/mL*3500 mL = 4270 g [/tex]

Now, the number of moles of N₂O is (eq 1):

[tex] n_{N_{2}O} = \frac{4270 g}{44.013 g/mol} = 97.02 \:moles [/tex]

Knowing that in 1 mol of N₂O we have 2 moles of N, the number of moles of nitrogen is:

[tex] n_{N} = \frac{2\: moles \: N}{1 \:mol \: N_{2}O}*n_{N_{2}O} = \frac{2\: moles \: N}{1 \:mol \: N_{2}O}*97.02 \:moles \:N_{2}O = 194.04 \: moles [/tex]

Finally, with the number of moles of N we can find its mass:

[tex] m = n_{N}*M_{N} = 194.04 \:moles*14.007 g/mol = 2717.9 g = 2.72 kg [/tex]

Therefore, there are 2.72 kilograms of nitrogen.  

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Taking into accoun the STP conditions and the ideal gas law, the correct answer is option e. 63 grams of O₂ are present in 44.1 L of O2 at STP.

First of all, the STP conditions refer to the standard temperature and pressure, where the values ​​used are: pressure at 1 atmosphere and temperature at 0°C. These values ​​are reference values ​​for gases.

On the other side, the pressure, P, the temperature, T, and the volume, V, of an ideal gas, are related by a simple formula called the ideal gas law:  

P×V = n×R×T

where:

Then, in this case:

Replacing in the expression for the ideal gas law:

1 atm× 44.1 L= n× 0.082 [tex]\frac{atmL}{molK}[/tex]× 273 K

Solving:

[tex]n=\frac{1 atm x44.1 L}{0.082\frac{atmL}{molK}x273K}[/tex]

n=1.97 moles

Being the molar mass of O₂, that is, the mass of one mole of the compound, 32 g/mole, the amount of mass that 1.97 moles contains can be calculated as:

[tex]1.97 molesx\frac{32 g}{1 mole}[/tex]= 63.04 g ≈ 63 g

Finally, the correct answer is option e. 63 grams of O₂ are present in 44.1 L of O2 at STP.

Learn more about the ideal gas law:

If you are talking about an atom with a full octet, then it would just have a full shell of 8 valence electrons.

Answer:

valence

Explanation:

movement of water from high potential to low potential

Answer:3 and 4

Explanation:I got it right on a quiz.

Answer:

3 & 4

Explanation:

Answer:

25J

Explanation:

Kinetic energy = (mv^2)/2. So (.5)(10^2)/2 = 25 J

Answer:

Every element in a given group has the same number of valence electrons. For elements in the main groups (1-2, and 13-18), the number of valence electrons increases when moving from left to right along any period (row). The noble gases contain a full valence electron shell, which consists of eight electrons.

Explanation:

Hope this helps.

Answer:

Valence Electrons

Explanation:

Say you are looking at a neutrally charged carbon atom, it has 6 electrons. The first electron shell can hold 2 electrons. The next can hold 8, the next can hold 8 and the next can hold ten and so on... Well in the Carbon atom case, it has 6 electrons, 6-2 is 4, so the carbon atom at 4 valence electrons, which actually helps it in making organic molecules, which in turn also helps make something you might have heard of before, organisms, the best example being, humans

Think of it like theory and physics.

A theory is an idea that needs to be tested.

Scientific law is something that cant be proven wrong.

Answer:

Speed can be thought of as the rate at which an object coverse distance

B) Reate distance

Answer:

using one or more of your senses is Observing

Answer:As predicted by VSEPR theory, the molecule adopts a "bent" molecular geometry similar to that of water.

Explanation:

B: It has fewer than 10 total watersheds best describes

A watershed is the area of land where all of the water that falls in it and drains off of it goes to a common outlet. All the land drains water into rivers that drain into the Chesapeake Bay, where it enters the Atlantic Ocean.

The area that drains into a single river is the watershed for that river.

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Answer:

D. Grass Health

Explanation:

Answer:

1000 ml

Explanation:

hope it helpssssssss

Answer:

1000 ml because the bigger ml the greater density brainliest pls

Answer:

a

Explanation:

Answer:

nCl= 0,062x3/2=0,093(mol)

Explanation:

Answer:

soilds - close together  arranged in a regular way

liquids - close together  arranged in a random way

gases - far apart  arranged in a random way

Explanation:

4.32×10−2mol hope it helps

Answer:

12 protons, 12 neutrons and 10 electron

Answer:  See below

Explanation:  a.  The mass of an element is composed of:

protons:     1 amu each

neutrons:   1 amu each

electrons:   0 amu each

Only the protons and neutrons are counted in the atomic mass of an element

b.  Electrons are assigned a mass of 0.  They do have a mass, but it is exceedingly small compared to the protons and neutrons, so they are left out of the calculation of an element's mass.

c.  An element becomes unstable if the neutrons exceed the protons by a certain ratio, dependent on the element.

true because I already foresighted a whole lot of things that I was not able to

Answer:

True

Explanation:

When an atom has an equal number of electrons and protons, it has an equal number of negative electric charges (the electrons) and positive electric charges (the protons). The total electric charge of the atom is therefore zero and the atom is said to be neutral.

;D

Answer:

It would be cell

Explanation:

If im correct then please mark me as brainliest!

Answer:

It reflects the amount of force an object exerts. It states that every object attracts another object.

Answer:

b

Explanation:

The concept Arrhenius equation is used here to determine the temperature dependence of the rate of a reaction. An increase in temperature increases the rate of a reaction. The correct option is B.

The rate of a chemical reaction is affected by the factors like temperature and activation energy. The influence of these factors on the rate of the reaction is explained by the Arrhenius equation.

The equation is given as:

[tex]k = A. e^{-} ^{E_{a} } /RT[/tex]

k - Rate constant

A - Frequency factor

Eₐ - Activation energy

R - Gas constant

T - Temperature

Since 'Temperature' appears in the denominator of the negative power of the exponential factor of the equation, it is evident that an increase in temperature increases the value of rate constant and thereby increases the rate of the reaction.

Thus the correct option is B.

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