How many GRAMS of H2 would you need to produce 2.5 mol NH3?

An atom that loses one or more valence electrons to become a positively charged ion is known as a cation, while an atom that gains electrons and becomes negatively charged is known as an anion.

Answer:

1kg/ml

Explanation:

Answer:

Reactions occur when two or more molecules interact and the molecules change. ... Bonds between atoms are broken and created to form new molecules. That's it.

Explanation:

Answer:

A

Explanation:

The high humidity, in conjunction with warm temperatures, creates massive amounts of warm, moist air rising into the atmosphere, where it can easily form a thunderstorm. As the process of evaporation and condensation occurs, these droplets collide with other moisture that is condensing as it rises.

Answer:

C. Yes, if each sample contains 6.02 x 10²³ atoms.

Explanation:

It is possible for each sample to contain 1 mole of each sample if and only if each of the sample if made up of 6.02 x 10²³ atoms.

6.02 x 10²³ atoms is the Avogadro's number. This number is equivalent to a mole of a substance.

A mole is simply a unit of measurement and it is equivalent to 6.02 x 10²³ atoms.

Answer:

C

Explanation:

i just took the test

:)

Answer:

the elk population will increase

Explanation:

because the gray wolves eat the Elks so introducing them back into the food chain will mean that more Elks are eaten!

hope that helps

Answer:

either deposition or physical weathering

Answer:

D. Erosion

Explanation:

Answer:

I think the third one

A ball kicked straight up slows down as it moves upward because the force given to the ball by the kick completely runs out. Thus, the correct option is C.

Gravitational force of the planet earth acts on every object which has some mass. When an object is thrown upwards the gravitational force of the earth acts against the velocity of the object such as ball and pulls the object downwards, i.e., towards itself on the ground. Thus, the object returns back towards the surface of earth.

The direction of a ball's motion while thrown upward is changing as it rises into the air when thrown. The speed of the ball decreases because the force of gravity pulls it towards the ground and makes the distance it covers decrease.

Therefore, the correct option is C.

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Answer:

polyethylene terephthalate

PET (also abbreviated PETE) is short for polyethylene terephthalate, the chemical name for polyester. PET is a clear, strong, and lightweight plastic that is widely used for packaging foods and beverages, especially convenience-sized soft drinks, juices, and water.

Explanation:

hope this helps have a good rest of your afternoon :) ❤

Answer:

True

Explanation:

Answer: true

Explanation:

Answer:

It is visible light

Explanation:

Answer:

67.58%  

Explanation:

First we convert the masses of the reactants into moles, using their respective molar masses:

By looking at the reaction equation, we know that 1.32 moles of Cl₂ would react completely with (2 * 1.32) 2.64 moles of Na. There are not as many Na moles, so Na is the limiting reactant.

Now we calculate how many NaCl moles would have been produced if all the limiting reactant was consumed:

We convert those moles to grams:

Finally we calculate the percent yield:

Answer:

asking about subjective matters

possibly leading to a testable hypothesis

addressing a gap in knowledge

I got soo confused about that last part. I didn't know if that was an option or something you needed to be answered.

Descriptive investigations are not repeatable because they are based only on observations made at a single point in time. The results may vary at a different time. In addition, descriptive investigations do not contain variables that may indicate cause-and-effect relationships.

Answer:

its N.N.November people

Explanation:

Answer:

Explanation:

One

Pressure will favor the side with the least number of mols if it the larger number of moles counts only the gases. (Le Chetalier's Principle). In this case both CaCO3 and CaO are not soluble in water. The only gas is CO2. Since it represents the most number of mols the reactant is favored.

More or Less are very troublesome words in beginning science. Make sure you understand their meaning for this question. The more pressure applied, the more the reactants will be favored and the equation shifts left.

Two

Fe and Fe3O4 are both solids. It depends on the form that water takes. Looking it up, it is shown to be in a gas form. That means if you increase the pressure, nothing will happen. That is not your question, but you should note it.

The answer to your question is you increase the concentration of Fe or H2O, the equilibrium will shift right.

If you add more Fe3O4 or hydrogen it will shift left.

Chemists say that if you alter the equilibrium the equation will shift in the opposite direction to compensate for the action you have taken.

Explanation:

By Avagadro's Law,

V¹n¹ = V²n², where P and T are constant.

Therefore (4.00L)(0.200mol) = (3.25L)n²,

n² = 0.246mol. (3s.f.)

P.S. n² does not mean the square of n in this case, it is just a subscript.

Ideal gas law is valid only for ideal gas not for vanderwaal gas. Combined Boyle's and Charles' gas law is used here. Therefore, 0.246mol of gas remain if some of the gas is released and the new volume is 3.25 L.

Ideal gas equation is the mathematical expression that relates pressure volume and temperature.

Mathematically the relation between Pressure, volume and temperature can be given as

PV=nRT

where,

P = pressure of ideal gas

V= volume of ideal gas

n =number of moles of ideal gas

T =temperature of ideal gas

R = Gas constant = 0.0821 L.atm/K.mol

By Avagadro's Law,

V₁n₁= V₂n₂, where P and T are constant.

V₁×n₁= V₂×n₂,

(4.00L)(0.200mol) = (3.25L)n²

n₂ = 0.246mol.

Therefore, 0.246mol of gas remain if some of the gas is released and the new volume is 3.25 L.

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Answer:

3 molecules

Explanation: i got it right on the test, also because the 2 other ones are compounds because they have hyrdogen and oxygen attached and molecules just have particles of one element attached

Answer:

3 molecules

Explanation:

A) high melting point

C) soluble in water

D) soluble in alcohol

E) does not conduct electricity in water

these options are a bit vague as some covalent substances dissolve in water / alcohol while some don't

Answer:

chlorophyll

Explanation:

Mass of LiOH= 23.95 grams ≈ 24 g

Given

1 mole of lithium hydroxide (LiOH)

Required

Mass of LiOH

Solution

The mole is the number of particles contained in a substance

1 mol = 6.02.10²³

Moles can also be determined from the amount of substance mass and its molar mass

n = mass : molar mass

Input the value :

mass = n x molar mass

mass = 1 mole x 23,95 g/mol

mass = 23.95 grams ≈ 24 g

The mass of 1 mole LiOH has been 24 g. Thus, option D is correct.

The mass of a compound present in a mole of sample has been equivalent to the molar mass of the compound. The molar mass of the compound has been the sum of the constituent in a formula unit.

The molar mass of lithium hydroxide (mwt) has been given as:

[tex]mwt=m_L_i\;+\;m_O\;+\;m_H[/tex]

Where, the mass of Li is [tex]m_L_i=6.941\;\rm g[/tex]

The mass of oxygen is [tex]m_O=16\;\rm g[/tex]

The mass of hydrogen is [tex]m_H=1\;\rm g[/tex]

Substituting the values for molar mass (mwt) of LiOH:

[tex]mwt=6.941\;+\;16\;+\;1\;\text g\\mwt=23.941\;\text g\\mwt=24\;\text g[/tex]

The molar mass of LiOH has been 24 g.

The molar mass has been equivalent to the mass of 1 mole of sample. Thus, the mass of 1 mole LiOH has been 24 g. Thus, option D is correct.

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Salts that are from strong bases and strong acids do not hydrolyze. Salts that are from strong bases and weak acids do hydrolyze, which gives it a pH greater than 7.  Salts of weak bases and strong acids do hydrolyze, which gives it a pH less than 7.

Answer:

C  Which model is composed of electrically charged particles?

Explanation:

The best question to resolve and determine the model which is plasma is to find one that is composed of electrically charged particles.

Plasma is one of the states of matter which is characterized by ions and other charged particles.

Matter is anything that has weight and occupies space.

There are four known states of matter which are:

Plasma is the only state of matter made up of charged particles.

Explanation:

Use the molecular formula to find the molar mass; to obtain the number of moles, divide the mass of compound by the molar mass of the compound expressed in grams.

Answer:

48.59%

Explanation:

theoretical yield = 42.6g

actual yield = 20.7g

% yield = 20.7/42.6 x 100 = 48.59% (2 d.p.)

Answer:

Yall are coming after that person above me when theres no diagram!!!! HELLO????????????? crazy

Explanation:

Efforts to control kudzu infestations have included the following methods: cutting, grazing, digging, disking, prescribed burning and application of herbicides. Roots of mature plants grow too deeply to be affected by freezing. Burning will kill only the very young plants.

Ideally, simply pulling out the heavy vines would prevent the kudzu from returning. However, you still need to kill each of the rooted stems at their crowns. Mowing or cutting back the vegetation to the ground provides the first step in removal. Then it’s time to bring out the big guns in the form of chemical herbicides.

Answer:

it is a infectiousr bacterial disease characterized by the growth of nodules(tubercles) in tissues especially the lungs

Answer/Explanation: At high angles like 90 degrees, the light doesn't spread out as much and has a more circular shape. As the ... Solar angle influences how much energy is received in an area.

-Bababooeyboy

Answer:

i thing by filtering

Explanation: