7.0 mol Mn reacts with 5.0 mol
O2 according to the equation below:
2Mn + O₂ → 2MnO
How many moles of MnO form from
5.0 mol Mn?
[?] mol MnO
Round your answer to the tenths place.

Based on the mass ratio, the mass of H₂ produced is 3.51 g of H₂

The mass ratio of a reaction is the ratio of the masses of the reactants as well as as products in a balanced equation of a reaction.

The equation of the reaction is given below;

2 AI + 6 HCI → 2 AICI₃ + 3 H₂

From the reaction equation, 2 * 27 g of Al produces 3 * 2 g of H₂

32.25 g of Al will produce: 6/55 * 32.25 g of H₂

Therefore, mass of H₂ produced is 3.51 g of H₂

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Answer:

From the reaction equation, 2 * 27 g of Al produces 3 * 2 g of H₂

32.25 g of Al will produce: 6/55 * 32.25 g of H₂

Therefore, mass of H₂ produced is 3.51 g of H₂

Explanation:

0.216 moles of gas can the container hold if a sealed container can hold 0.325 L of gas at 1.00 atm and 293 K.

The ideal gas law (PV = nRT) relates the macroscopic properties of ideal gases. An ideal gas is a gas in which the particles (a) do not attract or repel one another and (b) take up no space (have no volume).

PV=nRT, where n is the moles and R is the gas constant. Then divide the given mass by the number of moles to get molar mass.

Given data:

R = gas constant = 0.08206 L.atm / mol K  

T = temperature, Kelvin  

V=5 L

P = 1.05 atm

T = 296 K

Putting value in the given equation:

[tex]\frac{PV}{RT}=n[/tex]

[tex]n= \frac{1.05 atm\; X \;5 L}{ 0.08206 L.atm / mol K X 296 K}[/tex]

Moles = 0.216 moles

Hence, 0.216 moles of gas can the container hold if a sealed container can hold 0.325 L of gas at 1.00 atm and 293 K.

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Answer:

0.014

Explanation:

Use the formula PV=nRT; there are calculators for it online as well.

The approximate distance from the far edge of one lobe to the far edge of the other is 2,100,000 light-years.

This distance measures the outer space between the edges of the two lobes in a given time.

The approximate distance from the far edge of one lobe to the far edge of the other in a solar system is about 2,100,000 light-years.

Thus, the approximate distance from the far edge of one lobe to the far edge of the other is 2,100,000 light-years.

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The characteristic is uniformity.

Money is said to be uniform because irrespective of the nature it exists, the same amount must have the same purchasing power.

For example, a dollar in paper form and a dollar in coin form must be able to buy the same 1 dollar worth of goods.

Thus, a dollar bill, irrespective of its age, has the same purchasing power as a new, crisp dollar bill.

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Neither N₂ or O₂ are greenhouses gases because they do not cause the greenhouse effect.

Greenhouse gases trap heat in the atmosphere causing the temperature of the planet to rise.

Greenhouse gases cause the greenhouse effect.

The greenhouse effect is the warming up of the planet due to greenhouse gases.

Greenhouse gases include

So, neither N₂ or O₂ are greenhouses gases because they do not cause the greenhouse effect.

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Answer:

a.  3.72 [atm]

Explanation:

For a gas at constant temperature, (with no change in number of molecules of the gas), we can apply Boyle's Law:  [tex]P_1V_1=P_2V_2[/tex]

[tex](1.556[atm])(268.5[mL])=P_2(112.4[mL])[/tex]

[tex]\dfrac{(1.556[atm])(268.5[mL\!\!\!\!\!\!\!\!{--}])}{112.4[mL \!\!\!\!\!\!\!\!{--}]}=\dfrac{P_2(112.4[mL]\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!{-----})}{112.4[mL]\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!{-----}}[/tex]

[tex]3.716957[atm]=P_2[/tex]

It seems like the answer should have 4 significant figures since all of the other quantities have 4 significant figures, but the closest answer choice of those provided is a.  3.72

From the calculation, the molar mass of the solution is 141 g/mol.

We know that;

ΔT = K m i

K = the freezing constant

m = molality of the solution

i = the Van't Hoft factor

The molality of the solution is obtained from;

m = ΔT/K i

m = 3.89/5.12 * 1

m = 0.76 m

Now;

0.76 =  26.7 /MM/0.250

0.76 = 26.7 /0.250MM

0.76 * 0.250MM =  26.7

MM= 26.7/0.76 * 0.250

MM = 141 g/mol

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Noble gases have 8 electrons in the outermost shells.

They are the chemical elements that belong to group 8A of the periodic table.

They belong to group 8 because they have 8 electrons in their outermost shells. Their electron configuration is an octet. In other words, they do not need to donate or accept electrons to be stable.

Noble gases include helium, neon, argon, etc.

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Answer:

halogen

Explanation:

group 17 contains halogens

Answer:

The group 17 falls int he halogen category the element most likely Fluorine Chlorine Bromine Tennessine

Explanation:

Answer: D

Explanation:

Reduction involves the gaining of electrons.

However, charge must be balanced, and this is not the case for choice B, but it is the case for choice D

The scientific question that can be answered through investigation will be:

"Which of the four types of macromolecules, and in which proportions, are present in the food sample?"

A scientific question is a question that may lead to a hypothesis and help us in. answering (or figuring out) the reason for some observation.

A scientific question simply means a question where a researcher designs a question in order to get an answer to a particular investigation.

According to this question,

Since the researcher wants to know the person responsible for the classroom good mess by determining which macromolecules are present in the mystery food sample, then the question will be "Which of the four types of macromolecules, and in which proportions, are present in the food sample?"

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Answer:

1d and 2d is the answer. Hope it helps

Answer:

30.8 g oxygen

Explanation:

There are 1/2 as many Oxygen moles as hydrogen moles in H2O

so there are   3.85 / 2    * 16    gm of oxygen = 30.8 gms oxygen

Answer:

8.00

Explanation:

I hope the spurs get wembanyama so bad

Temperature affects both physical and chemical change because it modifies the state of matter and also it alters the rate of chemical reactions.

Temperature affects physical properties by increasing the motion of constituent atoms and thus altering the state of matter.

Moreover, in a chemical reaction, an increase in temperature also affects the conversion rate of a reactant to one or more products.

In conclusion, temperature affects both physical and chemical change because it modifies the state of matter and also it alters the rate of chemical reactions.

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The optimum pH of formic acid - formate buffer is 3.75

A substance or a solution which resists any changes in pH, when acid or alkali is added to it.

pH = pKa + log[base] / [acid]

Considering equimolar concentration of acid and base

pH = 3.75 + log(x)/(x)

pH = 3.75 + log (1)

pH = 3.75 + 0

pH = 3.75

Hence,

The optimum pH of formic acid - formate buffer is 3.75

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Compound is a group of same molecules, Element is a group of same atoms and mixture is combination of two or more pure substances.

What are Molecules ?

Molecules are the combination of two or more different atoms combine in a fixed ratio.

Molecules can be independently founded.

Atoms are always founded in combined state and does not occurs independently except rare earth elements which belongs to 18th group of periodic table.

Chemicals are taken in compound state But they undergo chemical reaction individually in molecular level.

Hence, Compound is a group of same molecules, Element is a group of same atoms and mixture is combination of two or more pure substances.

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The neutral grain spirit is essentially known as rectified spirits or ethyl alcohol.

neutral grain spirit can be defined as raw material that is very concentrated with alcohol used to produce strong alcoholic products.

neutral grain spirit as the name implies is neutral in nature that is it can be blended with any other alcoholic product.

In conclusion, The neutral grain spirit is essentially known as rectified spirits or ethyl alcohol.

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An ionic bond can be formed between Na and O, Mg and F or Li and H since they have large differences in their electronegativity values.

Ionic bonds are the bonds present in ionic compounds.

Ionic bonds are formed due to the electrostatic forces of attraction that exist between oppositely-charged ions.

Ionic bonds are formed between elements whose electronegativity values are far apart.

Thus, based on the given electronegativity values, an ionic bond can be formed between Na and O, Mg and F or Li and H.

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An ionic bond can be formed between Na and O, Mg and F or Li and H since they have large differences in their electronegativity values.

Ionic bond, also called an electrovalent bond, type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound.

Metal atoms form positive ions, while non-metal atoms form negative ions. The strong electrostatic forces of attraction between oppositely charged ions are called ionic bonds.

Ionic bonds are formed between elements whose electronegativity values are far apart.

Thus, based on the given electronegativity values, an ionic bond can be formed between Na and O, Mg and F or Li and H.

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Answer:

1.) Ionic

2.) Nonpolar Covalent

3.) Polar Covalent

Explanation:

Ionic bonding generally occurs when a metal and nonmetal wish to donate/receive electrons from each other. These bonds are between two atoms with a large electronegativity difference. In the first diagram, potassium (K) is a metal and chlorine (Cl) is a nonmetal. As you can see, after the reaction, potassium donates an electron to chlorine.

Nonpolar covalent bonding occur when atoms of practically the same electronegativity combine. As such, atoms of the same nature have a zero electronegativity difference and thus always form these bonds.

Polar covalent bonding generally occurs between two nonmetals. These atoms have an intermediate size electronegativity difference. Carbon (C) and chlorine satisfy this rule.

The element with the completely filled p-subshell is Ar (Option C)

This is the arrangement of elecartons in the atomic orbitals of an element. The modern electronic configuration makes use of the s, p, d, f orbital notation where

To obtain the correct answer, we shall write the electronic configuration of each element given in the question. This is illustrated below

From the above illustrations, we can see that only Ar has completely filled p-subshell.

Thus, Ar (Option C ) is the correct answer to the question

Complete question

See attached photo

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Answer:

a)

Explanation:

4th is incorrect.

Alkaline solutions are yellow in methyl orange.

Which statements about acids and bases are correct ?

<3

Answer:

The molecules of carbon dioxide are heavier than air. When a result, as they descend over the flame and candle, they push the oxygen and other air molecules out of the path. The oxygen can no longer react with the wax when it is pushed away from the wick. The flame is put out as a result.

Answer:

if the candle is burned in air with limited oxygen supply the candle will go out of fire as the oxygen is reducing....

Explanation:

Hope It Helps!!!

The metal which will reach the highest temperature is the metal with the lowest specific heat capacity.

The amount of heat Q = mcΔT where

Making ΔT subject of the formula, we have

ΔT = Q/mc

Given that Q and m are the same for each metal,

ΔT ∝ 1/c

We see that the temperature change is inversely proportional to the specific heat capacity.

Since the metals are at the same temperature, the metal which will reach the highest temperature is the metal with the lowest specific heat capacity.

So, the metal which will reach the highest temperature is the metal with the lowest specific heat capacity.

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Answer:

82.606g

Explanation:

[tex]5.15mol CO* \frac{1 mol CO}{1 mol CH4} *\frac{16.04 g CH4}{1 mol CH4} =82.606g CH4[/tex]

From the reaction, we can see that the number of moles produced is 2.5 moles of Na2SO4

Chemical reaction involves the combination between two or more species. In this case, the reaction  equation is; 2NaOH + H2S04 ----> Na2SO4 + 2H20.

Now we are told that sulfuric acid is in excess hence NaOH is the limiting reactant.

If 2 moles of NaOH produces 1 mole of Na2SO4

5 moles of NaOH produces 5 moles  * 1 mole/ 2 moles

= 2.5 moles of Na2SO4

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Answer:

Like Saturn, Uranus has rings and moons. But unlike Saturn — and indeed every other planet in the solar system — the ice giant is tipped on its side. In other words, rather than spinning like a top as it circles the sun, Uranus rolls around on its side.

Explanation: