Balance the chemical equation below using the smallest possible whole number stoichiometric coefficients.
N₂(g) + H₂(g) → NH3(g)

Barium hydroxide (Ba(OH)₂) is a base that disassociates wholly in water to form Ba²⁺ and OH⁻ ions.

Ba(OH)₂(s) → Ba²⁺(aq) + 2OH⁻(aq)

To find the pH, pOH, [H⁺], and [OH⁻] of the resulting solution, we need to first find the concentration of hydroxide ions ([OH⁻]) in the solution, which can be calculated using the stoichiometry of the reaction and the molarity of the solution:

moles of Ba(OH)₂ = mass / molar mass

moles of Ba(OH)₂ = 7.6 g / (137.33 g/mol + 2(16.00 g/mol))

moles of Ba(OH)₂ = 0.0321 mol

molarity of Ba(OH)₂ solution = moles / volume

molarity of Ba(OH)₂ solution = 0.0321 mol / 3 L

molarity of Ba(OH)₂ solution = 0.0107 M

Since each molecule of Ba(OH)₂ produces two hydroxide ions when it dissociates, the concentration of hydroxide ions in the solution is twice the molarity of the Ba(OH)₂ solution:

[OH⁻] = 2 × 0.0107 M

[OH⁻] = 0.0214 M

We can now use the concentration of hydroxide ions to find the pOH:

pOH = -㏒[OH⁻]

pOH = -㏒(0.0214)

pOH = 1.67

The pH of the solution can be found using the equation:

pH + pOH = 14

pH = 14 - pOH

pH = 14 - 1.67

pH = 12.33

Finally, we can use the equation:

pH = -㏒[H⁺]

to find the concentration of hydrogen ions in the solution:

[H+] = 10^(-pH)

[H+] = 10 ^ -12.33

[H+] = 4.47 × 10⁻¹³ M

So the pH of the solution is 12.33, the pOH is 1.67, the [H⁺] is 4.47 × 10⁻¹³M, and the [OH⁻] is 0.0214 M.

Learn more about barium hydroxide here:

https://brainly.com/question/10094403

#SPJ1

Answer:

A

Explanation:

because the glass contain the ice cubes

Cyclops are heterotrophic

In a first-order reaction, it takes 23.02 days for 68 percent of the chemical to be destroyed.

Given,

fee constant for the destruction of pollutant = 0.1/day

We ought to discover the number of days it'll take for sixty eight percent of the chemical to be destroyed.

[A] = [A]₀e^⁻kt

in which [A] is the present awareness, and

[A]₀ is the initial awareness

k is the price of decrement

[A]₀ = 1

[A] = 0.1

Or, t =㏑(10)/k

Or, t = 2.302/zero.1

Or, t = 23.02 days.

for this reason the wide variety of days required for the destruction of sixty eight percent of chemicals is 23 days.

To learn more about the first-order reaction, visit: https://brainly.com/question/10898529

#SPJ4

Answer:

14 elements.

Explanation:

B

boron

C

carbon

F

fluorine

H

hydrogen

I

iodine

N

nitrogen

O

oxygen

P

phosphorus

K

potassium

S

sulfur

W

tungsten

U

uranium

V

vanadium

Y

yttrium

Answer:

im pretty sure its groundwater just read this and see the answer

Explanation:

The ocean holds about 97 percent of the Earth's water; the remaining three percent is found in glaciers and ice, below the ground, in rivers and lakes. Of the world's total water supply of about 332 million cubic miles of water, about 97 percent is found in the ocean.

The molecular geometry (form) of CCl4 SF6 is identical to the configuration of the electron domains in a VSEPR.

VSEPR distinguishes between molecular geometry, which defines how the atoms in a molecule are ordered, and electron group geometry, which expresses how electron groups (bonds and nonbonding electron pairs) are arranged.

Chemistry frequently employs the valence-shell electron-pair repulsion (VSEPR) model to foretell the three-dimensional organization, or geometry, of molecules. This model accounts for the repulsion between electron pair to estimate the structure of a molecule.

Learn more about VSEPR here:

https://brainly.com/question/28775578

#SPJ4

The given statement "scientists have reached a main milestone in learning how to reverse aging" is true because scientists have investigated that lifestyle interventions, such as proper and healthy diet, exercise and supplements can reverse aging.

Scientific studies reveal that lifestyle interventions, including diet, exercise, and supplements can reverse aging. For instance, in one of the studies, patients were put on a healthy diet, had to take particular supplements, and exercise. After 8 weeks of following this plan, their epigenetic age was reversed by almost two years.

Thus, the given statement correctly specifies that scientists have achieved a big milesotme to reduce or reverse aging.

"

Complete question

scientists have reached a key milestone in learning how to reverse aging

True

False

"

You can learn more about Scientific studies at

https://brainly.com/question/28145780

#SPJ4

The equation q = -H, where q is the heat emitted or absorbed and H is the enthalpy change, relates the heat measured in Example 5.5 to the reaction's enthalpy change.

An acid and base interaction of this kind is referred to as a neutralization reaction. In the equation above, the base NaOH reacts with the acid HCl to generate the salt NaCl.

Therefore, since this creation is so powerful and produces a tremendous amount of energy, when the hydrochloric acid is dissolved in water, the hydrogen ions will form hydrogen bonding with the oxygen atom of the water molecule.

To know more about enthalpy change visit:-

https://brainly.com/question/29556033

#SPJ1

The mass of oxygen, carbon dioxide, and sulfur dioxide generated from the reaction of black powder and saltpeter is:

The percentage by mass of the constituents of black powder is as follows:

KNO₃ = 75%

S = 10%

C = 15%

The mass of oxygen, carbon dioxide, and sulfur dioxide generated is calculated from the given percentages by mass as follows:

For SO₂; 1 mole S produces 1 mole SO₂:

mass of SO₂ = 280 g * 0.10 / 32.g S * 1 mol SO2 / 1 mol S) * 64.0 g

mass of SO₂ = 56.0 g SO2

mass of O₂ that reacted with S to produce SO₂ will be:

1 mole O₂ reacts with 1 mole S

mass of O₂ = 56.0 / 64 * 32.0

mass of O₂ = 28.0 g O₂

For CO₂; 1 mole C produces 1 mole CO₂

mass of CO₂ produced = 280 g * 0.15 / 12.g/mol x * 44.0 g/mol)

mass of CO₂ produced = 154 g CO₂

mass of O₂ that reacted with C to produce CO₂ will be:

1 mole O₂ reacts with 1 mole C

mass of O₂ = 154 / 44 * 32.0

mass of O₂ that reacted with C = 112.0 g O₂

The total mass of O₂ produced = 112 + 28

The total mass of O₂ produced = 140 g

Learn more about black powder at: https://brainly.com/question/1420593

#SPJ1

the atomic radius is 0.144 nm.

Given:

FCC structure. Lattice constant = a = 0.40788 nm.

Atomic radius = r.

According to the definition of the FCC structure, there are 4 atoms per unit cell.

So, the length of the face diagonal can be found as follows:

a√2 = 0.40788 nm√2a = 0.40788 nm/√2a = 0.288 nm

From this, the radius can be calculated:

r = a/2r = 0.288 nm/2r = 0.144 nm

Therefore, the atomic radius is 0.144 nm.

learn more about Lattice here

https://brainly.com/question/28288408

#SPJ11

360 ml of the 70% acid and 540 ml of the 20% acid is required to make the 40% acid.

We know that this is a mixture problem thus we would have to apply the algebra of the problem so as to obtain the required solution. We are told that; The chemist combines x ml of a 20% acid solution, and y ml of a 70% acid solution to make the 40% acid solution.

We would then set up a pair of equations as follows;

x + y= 900...........eq 1

0.2x + 0.7y= 0.4(900)...eq 2

x = 900 - y ------ eq 3

Then;

0.2( 900 - y) + 0.7y = 360

180 - 0.2 y + 0.7y = 360

0.5 y = 180

y = 360 ml

Then we have;

x + 360 = 900

x = 540 ml

These are the required volumes.

Learn more about volume of the solution:https://brainly.com/question/14710169

#SPJ1

Answer:

B) Amount of matter within an object

C) amount of matter within a given volume

Explanation:

\({}\)

Answer: Nobel Gasses

Explanation:

Answer:

I think it is A

Explanation:

A.They study how to make plants produce certain chemicals

Answer:

all are metals and they will form oxide in air

answer

1.1 Carbon is the sixth element in the periodic table.

(IV A)

1.2 electric configuration: O⁸ (He²) 2s² 2p⁴ .

atomic number: 8

1.3 protons= 8 , electron = 7

1.4 oxygen has 6 valence electrons .

carbon has 4 valence electrons.

1.5 the answer is in the photo.

Answer:

SARS was an epidemic, but not a pandemic.

Explanation:

It is correct to say SARS was an epidemic but not a pandemic.

SARS outbreak occurred between 2002 - 2004 in China. It was localized to the People's republic and hence, an epidemic.

The recent outbreak of disease in 2020 on the other hand is a pandemic. The infectious disease had a global coverage.

Answer:

sars was an epidemic , but not an pandemic

Explanation:

When a bath bomb comes in contact with water, the baking soda and citric acid react to make carbon dioxide bubbles. This is an acid–base reaction, where baking soda (also called sodium bicarbonate) is a weak base and citric acid is a weak acid.

Growth in the world's population and economy, coupled with rapid urbanisation, will result in a substantial increase in energy demand over the coming years. The United Nations (UN) estimates that the world's population will grow from 7.6 billion in 2017 to 9.7 billion by 2050. The process of urbanisation – which currently adds a city the size of Shanghai to the world's urban population every four months or so – will result in approximately two-thirds of the world's people living in urban areas by 2050 (up from 55% in 2018). The challenge of meeting rapidly growing energy demand, whilst reducing harmful emissions of greenhouse gases, is considerable. In 2019 global energy-related carbon dioxide emissions rose to 33.3 Gt, the highest on record, and about 45% above the total in 2000 (23.2 Gt).Electricity demand growth has outpaced growth in final energy demand for many years. Increased electrification of end-uses – such as transport, space cooling, large appliances, ICT, and others – are key contributors to rising electricity demand. The number of people without access to electricity has fallen substantially, and is now below one billion. However, despite significant progress, over 11% of the world's population still lacks access, mostly in rural areas.Aside from the challenges of meeting increasing demand and reducing greenhouse gas emissions, cleaner air is a vital need. According to the World Health Organization (WHO), air pollution is the world's largest environmental risk. WHO estimates that about seven million people die prematurely as a result of air pollution. Much of the fine particulate matter in polluted areas arises from industrial sources such as power generation or from indoor air pollution which could be averted by electricity use.Studies have repeatedly shown that nuclear energy is a low-emitting source of electricity production in general. It is also specifically low-carbon; emitting among the lowest amount of carbon dioxide equivalent per unit of energy produced when considering total life-cycle emissions. It is the second largest source of low-carbon electricity production globally (after hydropower), and provided about 30% of all low-carbon electricity generated in 2018. Almost all reports on future energy supply from major organisations suggest an expanded role for nuclear power is required, alongside growth in other forms of low-carbon power generation, to create a sustainable future energy system.In June 2019 the OECD’s International Energy Agency (IEA) published a report, Nuclear Power in a Clean Energy System, which concluded that a failure to invest in existing and new nuclear plants in advanced economies would make global efforts to transition to a cleaner energy system drastically harder and more costly.

Answer:

Explanation:

Global population and economic growth, coupled with rapid urbanization, will lead to a significant increase in energy demand in the coming years. The United Nations (UN) predicts that the world population will grow from 7.6 billion in 2017 to 9.7 billion in 2050. By 2050, about two-thirds of the world's population will live in urban areas, due to an urbanization process that currently adds a city the size of Shanghai to the world's urban population about every four months. (up from 55% in 2018). The challenge of meeting rapidly growing energy demands while reducing harmful emissions of greenhouse gases is significant. In 2019, global energy-related carbon dioxide emissions increased to 33.3 Gt, a record high and nearly 45% higher than in 2000 (23.2 Gt). Electricity demand has grown faster than final energy demand over the years. Increasing electrification of end-users such as transportation, cooling, large appliances and ICT contributes significantly to the increase in electricity demand. The number of people without electricity has dropped significantly and now he is below 1 billion. However, despite significant progress, more than 11% of the world's population is still inaccessible, most of them living in rural areas. Aside from the challenges of meeting growing demand and reducing greenhouse gas emissions, clean air is essential. According to the World Health Organization (WHO), air pollution is the world's biggest environmental risk. WHO estimates that about 7 million people die prematurely as a result of air pollution. Much of the particulate matter in polluted areas comes from industrial sources such as power generation and indoor air pollution, which can be avoided by using electricity. Research has repeatedly shown that nuclear power is generally a low-emission power source. It is also particularly low carbon. It has one of the lowest CO2 equivalents per unit of energy produced when considering full life cycle emissions. It is the second largest source of low-carbon electricity generation in the world (after hydropower), providing about 30% of all low-carbon electricity generation in 2018. Nearly all reports on future energy supply by major organizations point to the growing role of nuclear power, along with the growth of other forms of low-carbon electricity generation necessary to build a sustainable future energy system. there is Global efforts to transition to cleaner energy systems will be significantly more complex and costly.

Answer:

6

Explanation:

bromine has 1, hydrogen has 4 and nitrogen has 1 therefore equaling 6

The number of atoms in NH₄Br is six.

An atom is a particle of matter that uniquely defines a chemical element. An atom consists of a central nucleus that is surrounded by one or more negatively charged electrons. The nucleus is positively charged and contains one or more relatively heavy particles known as protons and neutrons.

Atoms are the basic building blocks of matter. Anything that takes up space and anything with mass is made up of atoms.

In the given formula, there is one N atom, four H atoms and one Br atom making a total of six atoms.

Therefore, the number of atoms in NH₄Br is six.

Learn more about Atoms, here:

https://brainly.com/question/30898688

#SPJ2

The shelf-life of the reconstituted ampicillin suspension remains unchanged at 16 days when stored at room temperature (25°C) compared to storing it in the refrigerator at 5°C.

To calculate the shelf-life of the reconstituted ampicillin suspension at room temperature, we'll assume that the degradation follows an Arrhenius relationship.

Shelf-life at 5°C (T₁) = 16 days

Temperature at 5°C (T₁) = 5°C

Temperature at room temperature (T₂) = 25°C

To find the shelf-life at room temperature, we can use the Arrhenius equation:

k₁ / k₂ = exp((Ea / R) * (1/T₂ - 1/T₁))

Since we don't have specific values for Ea and the reaction rate constants, we'll assume that they are the same for simplicity. Thus, we can write:

k₁ / k₂ = exp((Ea / R) * (1/25 - 1/5))

Simplifying the equation, we get:

exp((Ea / R) * (4/125)) = 1

To satisfy this equation, the exponential term must be zero, which implies:

(Ea / R) * (4/125) = 0

Solving for Ea, we find:

Ea = 0

Since Ea is zero, it means the reaction rate constants and degradation rates are the same at both temperatures. Therefore, the shelf-life at room temperature (25°C) is the same as the shelf-life at 5°C, which is 16 days.

learn more about shelf-life here:

https://brainly.com/question/27891863

#SPJ4

Answer:

Final pressure is 0.956 atm

Explanation:

Based on Boyle's law, "The volume of an ideal gas is inversely proportional to the pressure when temperature is constant". The equation is:

P₁V₁ = P₂V₂

Where 1 represents initial state and 2 final state of the gas.

If a gas has 239L and 2.00 atm as initial state. If the final volume is 500L:

239Lₓ2.00atm =  P₂500L

239Lₓ2.00atm / 500L =  P₂

0.956atm =  P₂

Answer:

Artistic expression

Explanation:

Think of it as the control panel of our personality and our ability to communicate

Answer:

2NaOH + H₂SO₄ → Na₂SO₄ + 2H₂O

190.14 mL of the NaOH solution would be required.

Explanation:

The balanced reaction is:

Now we calculate how many H₂SO₄ moles are there in 25.00 mL of a 5.400 M solution, using the definition of molarity:

Now we convert H₂SO₄ moles into NaOH moles, using the stoichiometric coefficients of the balanced reaction:

Finally we calculate the volume of a 1.420 M solution that would contain 270 mmoles:

Answer:

The answer is 101.1032

Explanation:

Answer:

\( \huge{ \boxed{1.993 \times {10}^{11} \: moles}}\)

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula;

\( n = \dfrac{N}{L} \\ \)

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question

N = 1.20 × 10³⁵ formula units

\(n = \dfrac{1.2 \times {10}^{35} }{6.02 \times {10}^{23} } = \\ 1.993 \times {10}^{11} \: moles\)

We have the final answer as

Answer:

false

Explanation:

it gets nourishment from the storage tissues in the seeds, when it develops into a young plant with roots, then it takes nutrients from the soil