Guys what is this plz

Answer:

15moles

Explanation:

The balanced equation of this reaction is as follows:

N2 + 3H2 → 2NH3

Molar mass of H2 = 2g/mol

mole = mass/molar mass

mole = 90/2

mole = 45moles.

Based on the above balanced equation, 1 mole of nitrogen gas (N2) reacts with 3 moles of hydrogen gas (H2)

Hence, 45moles of hydrogen gas will produce (45 × ⅓) = 15moles of nitrogen gas (N2).

Answer:

Its 14.9 for those who are doing the escape room :)

Explanation:

Answer: water solutions conducts charge

Explanation: solid sodium chloride is n insulator.NaCl is dissolved in water

In ionic forms. In solution there are Na+ and Cl- ions which can transfer charge.

Answer:

Charges that are opposite each other, such as positive and negative charges, draw each other. Like charges repel each other, such as two negative charges or two positive charges.

Explanation:

Answer:

Opposite electric forces attract each other.

Like if it's positive and negative they will come together.

If they are the same(positive and positive or negative and negative) they will repel each other.

Explanation:

The Fe is our limiting reactant here. First, convert the mass of Fe given to moles of Fe by dividing mass by the molar mass:

(51.3 g Fe)/(55.845 g/mol) = 0.9186 mol Fe.

According to the balanced equation, 2 moles of Fe2O3 are produced for every 4 moles of Fe that are consumed. In other words, half as many moles of Fe2O3 will be produced as there are Fe that react:

(0.9186 mol Fe)(2 mol Fe2O3/4 mol Fe) = 0.4593 mol Fe2O3.

Finally, convert the moles of Fe2O3 back to grams by multiplying by the molar mass of Fe2O3:

(0.4593 mol Fe2O3)(159.6882 g/mol) = 73.3 g Fe2O3.

So, 73.3 grams of Fe2O3 are formed.

Answer: c= 1.8 mol/l

Explanation: amount of substance remains same.

Amount of substance n = c1·V1 = c2·V2 and c1= c2·V2/ V1

Original concentration c1= 300 ml·0.750 mol/l / 125 ml

Answer:

Prejudice

Explanation:

Answer: your answer would be prejudice.

Answer:

Pupil, Cornea, Retina, and Lens

Explanation:

Answer: the compound used in disinfecting water is called Bleaching powder. It's chemical formula is CaOCl2 ( calcium oxychloride).

Explanation:

Water is a universal solvent. It is polar in nature and dissolves most inorganic solutes and some polar organic solutes to form aqueous solutions. Rain, springs, well, rivers, lakes and sea are natural sources of water.

Most natural water contains dissolved mineral salts, suspended impurities and germs. Therefore to make it safe for domestic and industrial use, water from natural resources undergoes in water treatment tanks:

--> coagulation,

--> sedimentation,

--> filtration and

--> disinfection.

Taking a quick glance at the whole process z water is first collected in large tanks and filtered to remove large particles. Chemical like CA(OH)2 is added to coagulate the fine particles. The coagulated particles are removed by using filter beds. Then the Bleaching powder (calcium oxychloride) is added to kill the bacteria ( disinfection). Then water is ready for use.

Answer:

The Independent Variable is what we change or control in the experiment. The Dependent Variable is what we are testing and will be measured in the experiment. The Control Variables are what we keep the same during the experiment to make sure it's a fair test. hope this helps =)

Explanation:

Answer:

Mountain ranges and prevailing winds.

Explanation:

Mountain ranges and prevailing winds are the factors that is responsible for the difference in the precipitation between Nevada and Washington states. The Washington state is located along the coastal region of pacific ocean and having more mountain ranges which causes more rainfall in that region while on the other hand, Nevada state comprise of plateau, basins and far away from the ocean which is the main cause of lower rainfall as compared to Washington state.

Answer:

823.98

Explanation:

Since there is only one Ba per atom you simply times 1 by 6 to get the number of mols of Ba per atom, then you times this by the atomic mass of Ba on the periodic table

Answer:

Endothermic and Exothermic Reactions

Endothermic and Exothermic ReactionsIn this experiment you are investigating whether dissolving ammonium nitrate in water is an endothermic or exothermic reaction. An endothermic reaction absorbs energy from its surroundings (heat), so the reaction gets colder.

Explanation:

Don't forget to mark me as brainliest answer ☺

Answer:

In a bottle.

Explanation:

I would like soda in a bottle because you don't get soda stuck in the aluminum can like you do a bottle. And it's also way more efficient because bottles have caps that you can screw on later, but aluminum doesn't.

Answer:

answer is will be C) ok alright

Answer: true

Explanation:

true

Answer: Exothermic because the ΔH is negative.

Explanation:

The standard enthalpy of formation or standard heat of formation of a compound is the change of enthalpy during the formation of 1 mole of the substance from its constituent elements, with all substances in their standard states.

[tex]C(s)+O_2(g)\rightarrow CO_2(g)[/tex]

Exothermic reactions are those reactions in which heat is released and [tex]\Delta H[/tex] is negative.Endothermic reactions are those reactions in which heat is absorbed and [tex]\Delta H[/tex] is positive.

The reaction is exothermic as the heat is released during the formation of [tex]CO_2[/tex] as heat of formation of [tex]CO_2[/tex] is negative.

Answer:

You need a balanced equation.

2Fe(s) + 3S(s) ==> Fe2S3(s) ... balanced equation

Reactants are solid iron and solid sulfur

Product is iron(III) sulfide

A. 1.42 moles Fe x 3 moles S/2 moles Fe = 2.13 moles sulfur

B. 2.75 moles S x 2 moles Fe/3 moles S = 1.83 moles iron

Because deserts have such little water vapor in the air, it makes it harder to trap heat or cold in a desert. And at night, the sun no longer heats the desert and the heat from the day doesn't stay trapped. Because of this, some deserts can get extremely cold at night, dropping to temperatures below 40F.

Hope this helps!! Have a wonderful day!!

It is actually sand, which turns the entire phenomenon hot. Sand cannot hold the heat. It acts like a mirror to the sun. During the daytime, it stays warm, and when the Sun is absent it loses all its heat making the nights colder. There’s nothing in the desert that can either absorb heat from the sun or hold it on the surface when the sun is set.

Answer: Diploid Cells (?)

Explanation:

can you explain it further

Answer:

Valence electrons occupy the outermost shell or highest energy level of an atom while core electrons are those occupying the innermost shell or lowest energy levels. This difference greatly influences the role of the two types of electrons in a chemical reaction.

Answer: A is correct for ape.x

Explanation:

Nuclear fusion not used to produce electricity because fusion requires conditions that exist only in the cores of stars. Hence option A is correct.

Nuclear fusion is defined as the process that produces a single heavier atomic nucleus from the union of two lighter ones while releasing enormous quantities of energy. Controlled atom fusion generates around four million times as much energy as controlled nuclear fission and chemical processes like burning coal, oil, or gas.

Normal electrostatic interactions between positively charged nuclei prohibit them from coming close enough to collide and allow fusion to happen, hence fusion is not feasible. Fusion might be used to generate electricity economically if there was a sufficiently big and sustained energy "profit".

Thus, nuclear fusion not used to produce electricity because fusion requires conditions that exist only in the cores of stars. Hence option A is correct.

To learn more about nuclear fusion, refer to the link below:

https://brainly.com/question/12701636

#SPJ2

Answer:

The molar mass of the gas is 90.4g/mol

Explanation:

To solve this question we have to use the equation:

d = PM / RT

Where d is density of the gas = 2.29g/L

P is pressure = 0.75atm

M is molar mass of the gas = ??

R is gas constant = 0.082atmL/molK

T is absolute temperature = 88°C + 273.15 = 361.15K

Solving for M:

dRT / P = M

2.29L*0.082atmL/molK*361.15K / 0.75atm = M

90.4g/mol = M

The molar mass of the gas is 90.4g/mol

Answer:

[tex]186.01\ \text{mL}[/tex]

Explanation:

[tex]P_1[/tex] = Initial pressure = 1.47 atm

[tex]P_2[/tex] = Final pressure = [tex]10^5\ \text{Pa}[/tex]

[tex]T_1[/tex] = Initial temperature = [tex]44^{\circ}\text{C}[/tex]

[tex]T_2[/tex] = Final temperature = [tex]273.15\ \text{K}[/tex]

[tex]V_1[/tex] = Initial volume = 145 mL

[tex]V_2[/tex] = Final volume

We have the relation

[tex]\dfrac{P_1V_1}{T_1}=\dfrac{P_2V_2}{T_2}\\\Rightarrow V_2=\dfrac{P_1V_1T_2}{T_1P_2}\\\Rightarrow V_2=\dfrac{1.47\times 101325\times 145\times 273.15}{(44+273.15)\times 10^5}\\\Rightarrow V_2=186.01\ \text{mL}[/tex]

Final volume of the sample is [tex]186.01\ \text{mL}[/tex].

Answer:

I'm thinking cooper but not sure

Answer:

218.98 grams

Explanation:

Given that,

No. of moles, n = 2.3

The molar mass of magnesium chloride is 95.211 g/mol.

We need to find the mass of 2.3 moles of magnesium chloride.

We know that,

No. of moles = given mass/molar mass

Let m be the given mass. So,

[tex]m=n\times M\\\\=2.3\times 95.211 \\\\=218.98\ g[/tex]

So, the required mass is equal to 218.98 grams.

Answer: Burning fuels?

Explanation: I’m not very sure actually

Answer:

Yes

Explanation:

3NaOH + H3PO4

3Na + 3O + 3H + 3H + P + 4O

3Na + 7O + 6H + P

Na3PO4 + 3H2O

3Na + P + 4O + 6H + 3O

3Na + 7O + 6H + P