Do you agree or diagree with the following tatement: "The frequency and intenity of Atlantic hurricane will increae over the next 100 year". Explain your repone uing at leat 3 piece of evidence from your cla note, greenhoue ga data and lab invetigation today to prove you are correct

Explanation:

The atoms are chemically bonded together, and they retain their individual physical and chemical properties.

Answer:

The atoms can only combine in fixed ratios, and they can only be separated by a chemical change.

Explanation:

just took the test the other guys thing was wrong

Aluminum is used to make the metal cylinder.

To determine the substance of the metal block, we need to calculate its specific heat capacity, which is the amount of heat required to raise the temperature of 1 gram of a substance by 1 degree Celsius.

The equation for calculating the heat absorbed by a substance is:

q = m * c * ΔT

where q is the heat absorbed, m is the mass of the substance, c is the specific heat capacity, and ΔT is the change in temperature.

In this case, we have:

m = 500.0 g (given)

ΔT = 50.0 K (given)

q = unknown

To find c, we can rearrange the equation to:

c = q / (m * ΔT)

We know that the metal block absorbed some amount of heat, which we can calculate by multiplying the mass of the block by the specific heat capacity of water (which is 4.184 J/g*K) and the temperature change:

q = (500.0 g) * (4.184 J/g*K) * (50.0 K) = 104,600 J

Now we can calculate the specific heat capacity of the metal block:

c = q / (m * ΔT) = (104,600 J) / (500.0 g * 50.0 K) = 4.184 J/g*K

This specific heat capacity is very close to that of aluminum (which is 0.903 J/g*K) and therefore, we can conclude that the metal block is made of aluminum.

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Explanation:

Metallic bond, force that holds atoms together in a metallic substance

The ranking of bonds by increasing price volatility (duration) is as follows:

2) 4,2,1,3

This means that option 2 ranks the bonds in the correct order of increasing price volatility.

The duration of a bond measures its sensitivity to changes in interest rates. Generally, bonds with longer durations are more sensitive to interest rate changes and exhibit greater price volatility.

In the given ranking, the bond with the lowest price volatility (shortest duration) is bond 4, followed by bond 2, bond 1, and bond 3. This implies that bond 4 is the least affected by interest rate changes and has the lowest price volatility, while bond 3 is the most sensitive to interest rate changes and has the highest price volatility.

The ranking is based on the understanding that longer-term bonds tend to have higher durations and are more susceptible to price fluctuations due to changes in interest rates, while shorter-term bonds have lower durations and exhibit lower price volatility.

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Based on the data from the Mauna Loa Observatory, the atmospheric CO₂ concentration was around 280 ppm in 1750 but the atmospheric CO₂ concentration today is 415 ppm.

The pH of the Great Lakes would go down as more CO₂ enters the atmosphere/ lakes.

When CO₂ dissolves in water, it reacts with water molecules to form carbonic acid, which increases the acidity, thus lowering the pH of the water.

The equation of the reaction is given below:

The Great Lakes are freshwater bodies having an alkaline pH between 7.0 and 8.5.

As more CO₂ enters the atmosphere and dissolves in the lakes, it will increase the concentration of carbonic acid and decrease the pH of the water.

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These characteristics serve as guidelines for assessing the health and quality of aquatic environments, supporting the well-being of fish and other aquatic organisms.

Water temperatures below 86°F (30°C) for warm-water fisheries and below 68°F (20°C) for cold-water fisheries: Different fish species have different temperature preferences for optimal growth and survival. Warm-water fisheries generally thrive in higher water temperatures, while cold-water fisheries prefer cooler temperatures. Water temperatures outside these ranges can stress fish and disrupt their natural habitat.

Dissolved oxygen levels above 5 mg/L: Oxygen is essential for aquatic organisms, including fish, to breathe and carry out their metabolic processes. Adequate dissolved oxygen levels are necessary to support healthy aquatic ecosystems. Oxygen can enter the water through aeration from the atmosphere, photosynthesis by aquatic plants, and mixing with flowing water.

pH between 6 and 9: pH is a measure of the acidity or alkalinity of water. Most aquatic organisms, including fish, have adapted to function within a specific pH range. A pH between 6 and 9 is generally considered suitable for supporting diverse aquatic life. Extreme pH levels outside this range can be detrimental to aquatic organisms.

Streams should be "free from" sediments: Excessive sedimentation in streams can negatively impact aquatic ecosystems. Sediments can smother fish eggs, suffocate benthic organisms, and reduce water clarity, which affects photosynthesis and the availability of food sources. Healthy streams have a natural balance where sediment inputs are minimal, allowing for clear water conditions.

These characteristics serve as guidelines for assessing the health and quality of aquatic environments, supporting the well-being of fish and other aquatic organisms. However, it's important to note that specific water quality requirements may vary for different species and ecosystems.

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Answer

-52.2 Joules

Explanation

Given that;

Mass of krypton, m = 12.3 g

Temperature change, ΔT = 22.2°C - 39.3°C = -17.1°C

The specific heat of gaseous krypton, c = 0.248 J/g°C.

What to find:

The energy change, Q.

Step-by-step solution:

The energy change, Q can be determined using:

Q = mcΔT

Putting the values of the given parameters into the formula, this yields:

Therefore the energy change = -52.2 Joules

Answer:

The ans is : A. Electron, proton, hydrogen atom, helium atom.

An atom consist of sub atomic particles. The order of particles from least massive to most massive is electron, proton, hydrogen atom, helium atom. The correct option is A.

The particles which are smaller in size than the atom are known as the sub atomic particles. An atom generally contains three sub atomic particles, they are protons, electrons and neutrons. The electrons revolve around the nucleus whereas the protons and neutrons are present at the center of the nucleus.

The protons are positively charged particles whereas the electrons are negatively charged. The neutrons are chargeless. The atomic number of 'H' atom is 1 and that of 'He' atom is 2.

The mass of e⁻ is 9.1 × 10⁻³¹ kg, proton is 1.67 × 10⁻²⁷ kg, 'H' atom is 1.66 × 10⁻²⁴ g, 'He' is 4 g. Thus the order is:

electron, proton, hydrogen atom, helium atom

Thus the correct option is A.

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The sequence of coal from lowest to highest based on organic carbon contained within is peat, lignite, sub-bituminous, bituminous, anthracite.

This is a fossil fuel which is usually black in color and a combustible sedimentary rock.

There are different types of coal with the amount of organic carbon contained within from lowest to highest being shown above.

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The placement of a plastic coating (a, b, c, or d below) that could be used to prevent galvanic corrosion would depend on the type of plastic coating being used and the specifics of the joined copper and iron pieces that are exposed to salt water conditions.

Generally, a plastic coating should be applied to prevent any direct contact between the copper and iron pieces. Placement “a” and “b” could both be used, as they would create a barrier between the two pieces, while placement “c” and “d” would not be as effective because there would still be direct contact between the two pieces.

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The specific heat of the metal, given the data from the question is 0.60 J/gºC

Data obtained from the question

The following data were obtained from the question:

   Mass of metal (M) = 74 g

   Temperature of metal (T) = 94 °C

   Mass of water (Mᵥᵥ) = 120 g

   Temperature of water (Tᵥᵥ) = 26.5 °C

   Equilibrium temperature (Tₑ) = 32 °C

   Specific heat capacity of the water (Cᵥᵥ) = 4.184 J/gºC

How to determine the specific heat capacity of the metal

The specific heat capacity of the sample of gold can be obtained as follow:

According to the law of conservation of energy, we have:

Heat loss = Heat gain

MC(T –Tₑ) = MᵥᵥC(Tₑ – Tᵥᵥ)

74 × C(94 – 32) = 120 × 4.184 (32 – 26.5)

C × 4588 = 2761.44

Divide both side by 4588

C = 2761.44 / 4588

C = 0.60 J/gºC

Thus, the specific heat capacity of the metal is 0.60 J/gºC

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Answer:

masses are constant in chemical reactions

Explanation:

 I assume you are asking why you might get more mass out of a reaction between a metal and an acid with respect to the mass of the metal you put in.......

Metals tend to form salts in acids.......

When  metals form metal oxides, the oxide layer causes the extra mass. When acids reacts with metals, they form their metallic salts.

Metals are electropositive elements. In periodic table, the s block elements and d- block elements are metals. They are electron rich and easily loss one or more electrons from their valance shell.

Metals reacts with nonmetals such as oxygen, nitrogen, carbon etc. by donating electrons to them. Electronegative elements such as oxygen easily reacts with metals forming metal oxides.

Acids reacts with metals with donating the hydrogen ion or proton into the metal. That's why anionic acids are less mass than the acids with the protonated form.

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Moles of Lithium phosphate : 0.495

Given

6 Li + Zn₃(PO₄)₂ ------- > 2 Li₃PO₄ + 3 Zn

Required

Moles of Lithium phosphate

Solution

moles of Zinc(Ar=65,38 g/mol) :

= mass : Ar

= 48.6 : 65.38

= 0.743

From equation, mol ratio of Zn :  Li₃PO₄ = 3 : 2, so mol  Li₃PO₄ :

= 2/3 x mol Zn

= 2/3 x 0.743

= 0.495

Answer:

Heat Energy needed (Q) = 68250 J

Energy lost (Q') = 10500 J

Explanation:

Applying,

Q = cm(t₂-t₁)............. Equation 1

Where Q = heat  energy needed, c = specific heat capacity of water, m = mass of water, t₁ = initial temperature, t₂ = final temperature.

From the question,

Given: m = 250 g = 0.25 kg, t₁ = 20.0°C, t₂ = 85.0°C

Constant: c = 4200 J/kg°C

Substitute these values into equation 1

Q = 0.25(4200)(85-20)

Q = 68250 J.

Similarly, heat lost

Q' = cm(t₁-t₂)................. Equation 2

Where Q = heat lost

Given: t₁ = 85°C, t₂ = 75°C

Substitute into equation 2

Q' = 4200(0.25)(85-75)

Q' = 10500 J

The vapor pressure of the solution is approximately 13.4 torr.

The vapor pressure of a solution can be calculated using Raoult's law, which states that the vapor pressure of a solution is directly proportional to the mole fraction of the solvent. In this case, water is the solvent and ethylene glycol is the solute.

Given that the vapor pressure of pure water at 20°C is 17.5 torr, we can calculate the mole fraction of water in the solution. Since the solution is 21.6% ethylene glycol, the mole fraction of water (solvent) is 1 - 0.216 = 0.784.

Using Raoult's law, the vapor pressure of the solution is:

vapor pressure of solution = mole fraction of solvent * vapor pressure of pure solvent

vapor pressure of solution = 0.784 * 17.5 torr

vapor pressure of solution ≈ 13.7 torr

Rounding to three significant figures, the vapor pressure of the solution is approximately 13.4 torr.

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P1 = P2 and since momentum is conserved, 21 = (6.0)(2.77) + (0.70). (vpin). 4.38 = 0.70 vpin, vpin = 6.3 m/s to the right, 21 = 16.62 + 0.70 vpin, 

The bowling ball is solely affected by friction, hence Ff is used in place of F and equals mass times acceleration. The normal force (mass times gravity) multiplied by the friction coefficient equals the friction force, which also equals mass times acceleration.

The falling ball travels a distance of d = 12 9.8 (m/s2) t2, with a speed of v = 9.8 (m/s2) t as a function of time. The ball travels 4.9 m in a second. The falling ball's velocity is v = -9.8 (m/s2) t j, and its position is r = (4.9 m - 12 9.8 (m/s2) t2) j as a function of time.

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17.23 g of KBr is required to prepare 100 ml of a 1.5 M KBr solution.

To prepare 100 ml of a 1.5 M solution of KBr, you need to determine the amount of KBr in moles required to achieve the desired concentration. The formula for molarity is given as:

Molarity = moles of solute / liters of solution

Rearranging the equation to solve for moles, we get:

moles of solute = Molarity x liters of solution

In this case, the desired molarity is 1.5 M and the volume of solution is 100 ml, which is Equal to 0.1 liters. Plugging these values into the equation, we get:

moles of KBr = 1.5 x 0.1 = 0.15 moles

Next, we need to convert the number of moles to mass, using the molecular weight of KBr. The molecular weight of KBr is 114.91 g/mol. So, the mass of KBr required to prepare 100 ml of a 1.5 M solution is:

mass of KBr = 0.15 moles x 114.91 g/mol = 17.23 g.

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The specific measurement that will be affected is the volume of gas collected in the graduated cylinder. Since not all the gas was caught, the volume measured will be less than the actual volume of gas released. This will not change the molar mass calculation.

The molar mass is calculated by using the mass of the gas and the volume of the gas collected. Even though the volume measured was less than the actual volume, the mass of the gas collected should still be accurate. Therefore, the molar mass calculation should not be affected.
Hi! I'm happy to help with your question.

a. The specific measurement that will be affected is the volume of gas collected in the graduated cylinder.

b. This mistake will likely result in a decrease in the calculated molar mass. Since the volume of gas collected is lower than it should be, the molar mass calculation will be based on a smaller amount of gas, leading to a lower value than the actual molar mass.

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Edible mushrooms: Consuming edible mushrooms is safe and provides health advantages like fiber, vitamins, and minerals.

Non-Edible mushrooms: Mushrooms that cannot be eaten could be harmful or have unappealing flavors and textures that could be harmful if consumed.

Answer:

0.706 L (Liters)

Explanation:

P1V1 = P2 V2 3 atm 250.0 mL = 1 atm X

T1 T2 290 K 273 K

706 mL = X

According to the question,

Pressure,

Temperature,

Volume,

By using the Boyl's and Charl's combination law, we get

→ \(\frac{P_1 V_1}{T_1} = \frac{P_2 V_2}{T_2}\)

or,

→ \(V_2 = \frac{P_1 V_1 T_2}{T_1 P_2}\)

By putting the values, we get

→      \(= \frac{3\times 250\times 273}{290\times 1}\)

→      \(= 706 \ L\)

Thus the aforementioned answer is right.

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Answer:

three stable isotopes

Neon has three stable isotopes: 20Ne (90.48%), 21Ne (0.27%) and 22Ne (9.25%). Ne and 22Ne are partly primordial and partly nucleogenic (i.e. made by nuclear reactions of other nuclides with neutrons or other particles in the environment) and their variations in natural abundance are well understood.

The statement that is true is the charge of all isotopes are same. The correct option is D.

Isotopes are members of an element family that have the same number of protons but differ in terms of neutrons.

The atomic number of an element on the Periodic Table is determined by the number of protons in its nucleus.

There are three isotopes of neon. Since there is no significant global production of these isotopes, the more plentiful 20Ne and 22Ne are essentially all primordial.

Isotopes can form naturally through radioactive decay of a nucleus or unnaturally by bombarding a stable nucleus with charged particles in a nuclear reactor using accelerators or neutrons.

Thus, the correct option is D as they all have same charge.

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Your question seems incomplete, the missing options are:

- the atomic mass of the three isotopes is the same

-the three isotopes are all radioactive

-the three isotopes are equally abundant in nature

-the charge of all isotopes is the same

After using the Balanced equation the answer is The 36 gram of water can be made.

What is Balanced equation?

A balanced equation is a chemical equation in which the total number of atoms of each element on the left side of the equation is equal to the total number of atoms of that element on the right side of the equation. This means that the equation is balanced in terms of mass and charge, and all atoms are accounted for. A balanced equation is essential to ensure that the chemical reaction is accurate and that the correct amount of products are produced. Additionally, a balanced equation can help in the calculation of reaction rates and equilibrium concentrations.

The molar mass of O is 16g and Hydrogen is 1g in H2O there is one oxygen only but in question is given 32g of oxygen so, 2 moles of oxygen should be there so it will become 32g that means 2H2O so overall 2[2*1+16] = 36g.

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Answer:

B. Spring balance - a device used for measuring the weight or force of gravity acting on an object.

Explanation:

A Force is any interaction that changes the motion or position of an obkpjectbthatbit is interacting with. Whenever there is an interaction between two objects, there is a force exerted by each of the objects on one themselves.

Forces are generally divided into contact forces and non-contact over field forces.

In contact forces, the two objects physically in contact with each other. Examples of contact forces are push or pull forces, frictional forces, tensional forces, spring forces, etc.

Non-contact forces are forces in which the two objects interacting do no need to be physically in contact with one another. Examples include, gravitational forces, magnetic forces, electrical forces, etc.

Instruments used in measuring forces are known as force gauges.

From the instruments listed above:

A. A ruler is an instrument used in measuring length

B. Spring balance is a device used for measuring the weight or force of gravity acting on an object.

C. A thermometer is an instrument used in measuring temperature

D. A windbvane is an instrument used in measuring wind direction.

Answer:

the water displaced will not help the student find the correct volume because you can not accurately calculate it. you have to get the water when it is settled then you place the wood in.

Explanation:

Answer:

To get the answer, you want to look at the balanced equation and note that 2 moles of aluminum (Al) can produce 1 mole of aluminum oxide (Al2O3). That's the critical relationship that exists.

When two objects collide, a force is exerted on each object. the two forces are exerted in opposite directions, but they are in different strength.

Force is defined as the physical strength.

By Newton's first law of motion,

A body moving or in rest remains in motion or in rest until or unless no external force exertes on the body.

By newton second law of motion,

the force is directly proportional to the rate of change of momentum.

Mathematically,

F = ma

When a body collide and move backward or change it's path by exerting some amount of force. The force which is exerted on the body is always opposite due to which they move backward.

Thus, we concluded that when two objects collide, a force is exerted on each object. the two forces are exerted in opposite directions, but they are in different strength.

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The resulting pH after adding the HNO\(_{3}\) solution is around the same as the pKa of HF, which is 3.17. Option D is the answer.

To determine the resulting pH after adding 15 mL of a 0.1 M HNO\(_{3}\) solution to 200.0 mL of a buffer made of 0.25 M HF and 0.25 M NaF, we need to consider the buffer's capacity to resist changes in pH.

The buffer consists of a weak acid (HF) and its conjugate base (F-). When an acid (HNO\(_{3}\)) is added, it reacts with the base (F-) in the buffer to form the conjugate acid (HF) and the nitrate ion (NO\(_{3}\)-).

Since the initial concentrations of HF and F- are equal (0.25 M), the buffer is at its optimal pH, which is approximately equal to the pKa of HF (3.17).

Adding the HNO\(_{3}\) solution increases the concentration of the conjugate acid (HF) and decreases the concentration of the base (F-). However, since the concentrations of HF and F- are still equal, the pH remains close to the pKa.

Therefore, the resulting pH after adding the HNO\(_{3}\) solution is approximately equal to the pKa of HF, which is 3.17.

Option D, 3.17, is the answer.

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Answer: Yes, sulfuric acid is highly soluble in water.

Explanation: