Which of these describes a way in which humans could increase biodiversity in a marine ecosystem?

A. Fish populations increase as dissolved oxygen decreases.
B. Data that shows how trees get affected by disease as levels of acid rain increases.
C. Data showing how forests grow when acidic precipitation decreases.

To determine the volume of N2(g) produced by the complete decomposition of 1 mole of nitroglycerin (C3H5N3O9), we need to consider the balanced chemical equation for the decomposition reaction.

The balanced equation for the decomposition of nitroglycerin is as follows:

4 C3H5N3O9(s) → 12 CO2(g) + 10 H2O(g) + 6 N2(g) + O2(g) From the balanced equation, we can see that for every 4 moles of nitroglycerin, 6 moles of N2(g) are produced. Since we are considering the decomposition of 1 mole of nitroglycerin, we can use this ratio to determine the moles of N2(g) produced, which is 6/4 = 1.5 moles of N2(g). Now, at STP (Standard Temperature and Pressure), 1 mole of any ideal gas occupies 22.4 liters. Therefore, 1.5 moles of N2(g) would occupy approximately 33.6 liters

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we find the energy to be approximately \(3.41 * 10^-19\) Joules is the answer.

To calculate the wavelength of a photon with a frequency of 61.7 MHz, we can use the formula: wavelength = speed of light / frequency. The speed of light is approximately\(3 * 10^8\) meters per second.

Converting the frequency to Hz (\(1 MHz = 10^6 Hz\)), we have \(61.7 * 10^6\)Hz.

Plugging these values into the formula, we get: wavelength =\((3 * 10^8 m/s) / (61.7 * 10^6 Hz).\)

Simplifying, we find the wavelength to be approximately 4.862 meters.

Now, to calculate the energy of a photon with a wavelength of 582.8 nm, we can use the equation: energy = Planck's constant × speed of light / wavelength.

Planck's constant is approximately \(6.63 * 10^-34\) Joule-seconds.

Converting the wavelength to meters (\(1 nm = 10^-9 m\)), we have \(582.8 * 10^-9 m.\)

Plugging these values into the equation, we get: energy =\((6.63 * 10^-34J·s) * (3 * 10^8 m/s) / (582.8 * 10^-9 m).\)

Simplifying, we find the energy to be approximately \(3.41 * 10^-19\) Joules.

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Answer:

c2h2 is it..........

Explanation:

lol

Answer:

180

Explanation:

proton = 80

electron = 80

neutron = 100

Note:- the atomic number of an element is the number of protons/electrons in the atomic shell

(protons = electrons)

Mass number = number of protons/electrons + number of neutrons

MN= NP+ NN

MN = 80 + 100

MN= 180

I HOPE THIS HELPS

Answer:

nonpolar

Explanation:

A nonpolar solvent has the highest solubility with a nonpolar solute.

Answer:

There are many ways we can take care of our circulatory system, such as exercising! If people exercise more, they have: a normal blood pressure, less risk of getting diabetes. Working out even improves your muscles' ability to pull oxygen in and out of the blood. Another way to take care of the circulatory system is to not vape. Vapes have chemicals, such as nicotine, that make your arteries stiff. It also causes cholesterol deposits, which can lead to clots forming in your blood vessels. Additionally, the blood vessels can easily rupture.

Heart disease is responsible for a quarter of all deaths in the United States. Heart diseases and strokes happen when you have high blood pressure, or hypertension. More specifically, a stroke happens when the blood supply to the brain is reduced. If you eat foods with high sodium and fat, you're at greater risk of getting heart and cardiovascular diseases. The salt and fat adds excess water to your blood vessels, resulting in abnormal blood pressures.

Explanation:

The given statement "metal oxides added to glass produce glass of different colors" is true because The addition of metal oxides to glass during its production can result in glass of different colors.

Metal oxides have the ability to absorb certain wavelengths of light, giving the glass a specific color appearance. Various metal oxides can be used to achieve different colors in glass.

For example, cobalt oxide can be added to produce a blue color, while copper oxide can create a green hue. Iron oxide can give glass a yellow or brown color, and selenium or sulfur can produce red or pink tones. The concentration of the metal oxide added will also influence the intensity and shade of the resulting color.

By carefully controlling the type and amount of metal oxide, glassmakers can create a wide range of colors, allowing for artistic and decorative applications in glass products.

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metal oxides added to glass can produce glass of different colors due to the presence of transition metal ions.

When metal oxides are added to glass, they can produce glass of different colors. This is because metal oxides contain transition metal ions, which have partially filled d-orbitals. These d-orbitals allow the transition metal ions to absorb certain wavelengths of light, resulting in the glass acquiring a specific color.

The color produced by the addition of metal oxides depends on the type and concentration of the metal oxide used. For example, adding cobalt oxide to glass can result in a blue color, while adding chromium oxide can result in a green color.

It is important to note that the color of the glass can also be influenced by other factors, such as the composition of the glass matrix and the firing temperature during glass production. These factors can affect the way the metal ions interact with the glass and the resulting color.

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Answer:

The answer is C4H8.

Explanation:

I hope it helps you

Pass your test fast okay

BYE!

Answer:

are there answer choices with the question?

Explanation:

sorry im a little confused

Answer:

1

Explanation:

Is setting number 1

Hope you have an amazing night!

No, I would not consider using a 5mm electrode for vertical up-root runs in a 6g (hl045) fixed-position pipe.

This is because a 5mm electrode is too large for this type of welding, and can result in a lack of penetration and a weak weld. Instead, a smaller electrode, such as a 3.2mm or 2.5mm, would be a better choice for this application. These smaller electrodes allow for better control and penetration, resulting in a stronger weld. Additionally, it is important to use the correct welding technique and travel speed when performing vertical up-root runs in a 6g (hl045) fixed-position pipe to ensure a strong and secure weld.

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Answer:

The hydronium ion concentration increases to 100 times the original concentration

Explanation:

The pH of a solution is defined as the negative logarithm of the hydrogen or hydronium ion concentration of that solution. It is given by the expression below:

pH = -log[H₃O⁺] = log[H₃O⁺]⁻¹

Assuming the solution was at neutral with original pH = 7;

The new pH of the solution will be = 7 - 2 = 5

At pH = 7;

log[H₃O⁺]⁻¹ = 7

[H₃O⁺]⁻¹ = 10⁷

[H₃O⁺] = 10⁻⁷

At pH = 5

log[H₃O⁺]⁻¹ = 5

[H₃O⁺]⁻¹ = 10⁵

[H₃O⁺] = 10⁻⁵

10⁻⁵ = 10⁻⁷ * 10²

But 10² = 100

Therefore, the hydronium ion concentration increases to 100 times the original concentration

Answer:

B

Explanation:

On Edge

Answer: Decrease

Explanation: The downward slope causes the momentum to decrease in speed rather than increase from an higher point.

Answer:

33g

Explanation:

200 divided by 6=33.33

Answer:

67.2 L

Explanation:

2 mol NH3 x \(\frac{3 mol H2}{2 mol NH3}\)= 3 mol H2

3 mol H2 x \(\frac{22.4 L}{1 mol H2}\)= 67.2 L

At 46.40 degrees Celsius and 897.00 mmHg, 6.20 liters of oxygen gas will contain a mass of 26.37 grams.

Oxygen is an element that is essential to life as we know it. It is a colorless, odorless, tasteless gas that makes up about 21% of the Earth's atmosphere. In its natural form, oxygen is made up of molecules of two oxygen atoms bonded together. Oxygen is vital to all living organisms, including humans, and is necessary for respiration and combustion. Oxygen plays a major role in many chemical processes, such as the burning of fuel, the corrosion of metals, and the formation of acids and bases. It is also an important component of environmental cycles, such as the water cycle and the carbon cycle.

897.00 mmHg = 897.00 mmHg × (1 atm / 760 mmHg) ≈ 1.17934 atm

46.40 °C + 273.15 = 319.55 K

Now, let's rearrange the ideal gas law equation to solve for the number of moles (n):

n = PV / RT

Plugging in the given values:

n = (1.17934 atm × 6.20 L) / (0.0821 Latm/molK × 319.55 K)

Simplifying the equation, we find:

n ≈ 0.2839 moles

To calculate the mass of O₂ gas, we need to multiply the number of moles by the molar mass of O₂:

Molar mass of O₂ = 32.00 g/mol

Mass of O₂ = 0.2839 moles × 32.00 g/mol ≈ 9.0928 g

Therefore, there are approximately 9.0928 grams of O₂ gas in the 6.20 L container at a pressure of 897.00 mmHg and a temperature of 46.40°C.

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Answer:

there are about 26.67 milligrams in 10 mL.

Explanation:

To find the number of milligrams in 10 mL, you can use the proportion:

(8 mg) / (3 mL) = (x mg) / (10 mL)

Where x is the number of milligrams in 10 mL. To solve for x, you can cross-multiply and divide:

(8 mg) * (10 mL) = (3 mL) * (x mg)

x = (8 mg) * (10 mL) / (3 mL)

x = 26.666.. mg

The influence of a cerium additive on ultrafine diesel particle emissions and kinetics of oxidation can be significant. Cerium additives, such as cerium oxide (CeO2), are often used in diesel fuel as combustion catalysts to improve fuel efficiency and reduce emissions.

When cerium additives are introduced into diesel fuel, they can enhance the oxidation process of diesel particles. The cerium particles act as catalysts, promoting the conversion of hydrocarbons and carbon monoxide into less harmful gases like carbon dioxide. This helps to reduce the emissions of ultrafine particles, which are known to have adverse health effects.

The addition of cerium can also influence the kinetics of oxidation. It can lower the activation energy required for the oxidation reaction to occur, thereby increasing the rate of oxidation. This means that the diesel particles can be oxidized more quickly, leading to a reduction in particle emissions.

Furthermore, cerium additives have been found to have regenerative properties. They can form a protective layer on the surface of diesel particles, preventing the aggregation and growth of particles. This can help to maintain the small size of ultrafine particles, which are less harmful to human health compared to larger particles.

In conclusion, the addition of a cerium additive to diesel fuel can have a positive impact on ultrafine diesel particle emissions and the kinetics of oxidation. It can enhance the oxidation process, reduce particle emissions, and prevent particle growth. However, it is important to note that the specific effects may vary depending on the concentration of the additive, engine conditions, and other factors.

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Hello ☺️, given below will be the answers:-

• 1.1 Å = 1.1 x 10^-7 mm

• 5.38 Å = 5.38 × 10^-24 cm³

• 0.234 mg = 0.000234 kg

✍️ By Benjemin ☺️

Worldwide earthquake distribution and geologic forces are closely related. Earthquakes are caused by geologic forces that build up energy within the earth's crust and release it suddenly in the form of seismic waves.

The earth's crust is made up of several plates that are in constant motion. When two plates move towards each other, one plate may be pushed beneath the other in a process known as subduction. This can cause the build-up of pressure and the formation of faults or fractures in the crust, which can lead to earthquakes.

The distribution of earthquakes worldwide is largely determined by the location of these tectonic plate boundaries. For example, most earthquakes occur along the Pacific Ring of Fire, which is an area around the Pacific Ocean where several tectonic plates meet. The Mid-Atlantic Ridge, which is the boundary between the North American and Eurasian plates, is another area where earthquakes are common.

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The pressure of a gas is directly proportional to its temperature. Hence, as temperature decreases  pressure decreases. Therefore, as the temperature reduced to half, pressure also decreases to half. Then option D is correct.

According to Gay- Lussacs law at constant volume, the pressure of a gas is directly proportional to the temperature.

Hence, P/T = constant.

Let P1 and T1 be the initial pressure and temperature and P2, T2 be the final quantities, then

P1/T1 = P2/T2

Given P1 = 1 atm

T1 = x ° C

T2 = x/2° C

Then P2 = P1 T2/T1

P2 = 1 × x/2° C / x° C

     = 1/2 atm

That is one half of the initial pressure.

Therefore, the pressure of the gas reduces to half when temperature is reduced to half.

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Climate refers to the long-term average of temperature, humidity, precipitation, and other atmospheric conditions in a particular region over a period of time, usually 30 years or more.

Climate can be classified into different types,  similar as tropical,  thirsty, temperate, and polar, grounded on the temperature and  rush patterns.   Weather, on the other hand, refers to the day- to- day or short- term atmospheric conditions,  similar as temperature,  rush, wind speed, and  moisture, in a particular region.

Weather is  largely variable and can change  fleetly over a short period of time, ranging from  twinkles to days.   In summary, climate represents long- term patterns of atmospheric conditions, while rainfall represents short- term and  largely variable atmospheric conditions.

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The volume of pure gold has a mass of 65.4g and a density of 9.3g/cm3 is   3.3886 cm3.

Solution :

∵ density = mass ÷ volume

⇒ volume = mass ÷ density

∴ volume of pure gold = (mass of gold) ÷ (density of gold)

                                      = 65.4 ÷ 19.3

  The volume of pure gold = 3.3886 cm3

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Based on the given isotopic composition, the relative contribution of C3 plants is higher compared to C4 plants in the soil organic matter of Kenya.

To determine the relative contribution of C3 and C4 plants to the soil organic matter in Kenya based on their stable carbon isotopic composition, we can use the concept of isotopic discrimination.

C3 and C4 plants have different photosynthetic pathways, and they exhibit distinct carbon isotope signatures. C3 plants typically have a more negative δ13C value (around -30 permil to -22 permil), while C4 plants have a less negative δ13C value (around -16 permil to -9 permil).

In this case, the soil organic matter in Kenya has a δ13C value of -18 permil, while the air δ13C value is -7 permil. The difference between these values (-18 permil - (-7 permil)) gives us the isotopic discrimination between the atmosphere and the soil organic matter.

δ13C discrimination = δ13C organic matter - δ13C atmosphere

δ13C discrimination = -18 permil - (-7 permil)

δ13C discrimination = -11 permil

Since the δ13C discrimination is negative, it suggests that C3 plants have a dominant contribution to the soil organic matter. C4 plants, with their less negative δ13C values, are less likely to contribute significantly to the organic matter in this case.

Therefore, based on the given isotopic composition, the relative contribution of C3 plants is higher compared to C4 plants in the soil organic matter of Kenya.

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The statements are related to a postulate of the kinetic molecular theory of gases is gas particles are in constant motion and are very far apart compared to their size. Therefore, option B is correct.

According to kinetic molecular theory, gas particles are in constant motion and have perfectly elastic collisions. Both Charles' and Boyle's laws can be explained using kinetic molecular theory. The average kinetic energy of a gas particle collection is only proportional to absolute temperature.

The kinetic-molecular theory is a theory that explains matter states and is based on the idea that matter is made up of tiny particles that are constantly in motion. The theory contributes to the understanding of observable properties and behaviors of solids, liquids, and gases.

Gas particles are in constant motion and are very far apart in comparison to their size, according to a postulate of the kinetic molecular theory of gases.

Thus, option B is correct.

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The place of chemistry referred to as stoichiometry examines the quantitative correlations among reactants and merchandise in a chemical reaction. It entails applying balanced chemical equations to determine how many reactants or products are generated during a reaction.

To answer question, we need to use stoichiometry and the molar volume of a gas at STP.

First, let's write and balance the equation:

Mg (s) + 2 HCl (aq) → H2 (g) + MgCl2 (aq)

Next, we need to determine the number of moles of H2 produced. We know that the volume of H2 produced is 35 mL at STP, which means the pressure is 1 atm and the temperature is 273 K. Using the molar volume of a gas at STP (22.4 L/mol), we can convert the volume to moles:

35 mL H2 × 1 L/1000 mL × 1 mol/22.4 L = 0.00156 mol H2

Since the stoichiometry of the reaction tells us that 1 mole of Mg produces 1 mole of H2, we need 0.00156 mol Mg to produce this amount of H2.

Finally, we can convert moles of Mg to grams using the molar mass of Mg:

0.00156 mol Mg × 24.31 g/mol Mg = 0.038 g Mg

Therefore, we need 0.038 g of Mg to produce 35 mL of H2 at STP in this reaction.

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Answer:

First One And Third Pls Mark Brainlest

Explanation:

a. The molecular orbital diagram for diatomic \(N_2\) and \(Co\) attached.

b. The similarities between the two\(MO\)diagrams are that both molecules have bonding and anti-bonding orbitals, and both molecules have two electrons in the bonding orbitals. The differences between the two \(MO\) diagrams are that \(N_2\) has two electrons in the anti-bonding orbital and \(Co\) has three electrons in the anti-bonding orbital.

c. \(Co\) engages in σ-bonding with metal centres, which is a type of covalent bonding. Diagram attached.

What are diatomic \(N_2\) and \(Co\) molecular orbits?

Diatomic Nitrogen (\(N_2\)) and Diatomic Carbon Monoxide (\(Co\)) are two of the most common diatomic molecules. Both molecules consist of two atoms bonded together and are found in nature. \(N_2\) is the most abundant molecule in Earth's atmosphere and is essential for life; it is responsible for the blue colour of the sky. \(Co\) is a colourless, odourless, and toxic gas that is produced by combustion and is also found in the atmosphere.

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