A power plant emits sulfur dioxide (SO2 ) that results in acid rain falling on a forest. The total damage to the forest is

(ii) In this experiment the student uses 1.70 g of the anhydrous copper(II) sulfate.

Calculate the molar enthalpy change (delta H) in kJ/mol.

Include a sign in your answer.

[Mr, of CuSO4 =

Answer:

I'm pretty sure its low

Explanation:

the chemical would be imbalanced since the plant is dying

Answer:

element

Explanation:

an element is something made up of only one type of atom

B) 1 and 3

it's the right answer

Answer:

For 3rd question, the answer is option D

The inlet pressure of the pipeline in (bar) is 6.7 bar. To calculate the inlet pressure of the pipeline, we can use the Darcy-Weisbach equation.

Darcy-Weisbach equation relates pressure drop, flow rate, pipe characteristics, and fluid properties. The equation is given as:

ΔP = (fLρV²) / (2D) where:

ΔP is the pressure drop

f is the Darcy friction factor

L is the length of the pipeline

ρ is the density of water

V is the velocity of water

D is the diameter of the pipeline

First, we need to convert the flow rate from m³/hr to m³/s:

Flow rate = 27 m³/hr = (27/3600) m³/s = 0.0075 m³/s

Next, we need to calculate the velocity of water:

Area of the pipeline =\(\pi \times \frac {(76/1000)^2}{4} = 0.004556 m^2\)

Velocity
= Flow rate / Area of the pipeline
= 0.0075 m³/s / 0.004556 m² = 1.646 m/s

Now, we can calculate the pressure drop using the Darcy-Weisbach equation. Since we need to calculate the inlet pressure, we assume ΔP is the difference between the outlet pressure and the inlet pressure:

ΔP = (fLρV²) / (2D)

\(\triangle P = \frac {(0.015 \times 4000 \times 1000 \times 1.646^2)}{(2 \times 0.076)} = 10.69 \times 10^5 Pa\)

= 10.7 bar (approx)

Rearranging the equation to solve for the inlet pressure:

Inlet pressure = ΔP - outlet pressure = 10.7 bar - 4 bar = 6.7 bar

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Standard state conditions and standard temperature and pressure (STP) are both reference conditions used in different areas of chemistry. Standard state conditions are used to measure properties of substances at a specific temperature and pressure, while STP is used in gas laws and ideal gas calculations to simplify comparisons between different gas samples.

Standard state conditions are a set of reference conditions that are used in chemistry to measure properties of substances. These conditions are typically defined as 25°C (298.15 K) and 1 atm pressure. Standard state conditions are used for thermodynamic calculations and equilibrium constants, such as the solubility product constant (Ksp), acid dissociation constant (Ka), and formation constant (Kf).

Standard temperature and pressure (STP), on the other hand, are defined as 0°C (273.15 K) and 1 atm pressure. STP is used in gas laws and ideal gas calculations to simplify comparisons between different gas samples. At STP, the volume of one mole of an ideal gas is 22.4 L, which is known as the molar volume. STP is also used to determine the density of a gas, as well as the molar mass of a gas.

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Answer:

Agriculture was practiced for thousands of years without the use of artificial chemicals. Artificial fertilizers were first created during the mid-19th century. These new agricultural techniques, while beneficial in the short term, had an Institute of Plant Industry to improve traditional farming methods in India.

Explanation:

Answer:

False

Explanation:

Answer:

i think 50%

Explanation:

The amount of benzene in the sample that burned was \(4.14*10^{26}\) molecules.

The molecular weight of benzene is 78.11 g/mol. This means that the number of moles of benzene in the sample can be calculated by dividing the mass of the sample (522 liters of CO2 is approximately 522 kg at STP) by 78.11 g/mol.

The number of moles of benzene in the sample can then be used to calculate the number of benzene molecules. This is given by the equation:

Number of benzene molecules = Number of moles x Avogadro's Constant

The number of benzene molecules in the sample that underwent combustion is:

Number of benzene molecules

\(=\frac{ 522 kg }{ 78.11 g/mol} * 6.02 * 10^{23} molecules/mol\\\\= 4.14 * 10^{26 }molecules\)

Therefore,\(4.14*10^{26}\) molecules of benzene molecules were in the sample that underwent combustion.

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Answer:

5. Amplitude.

6. 344.8 meters/second

Explanation:

5. The energy is proportional to the amplitude is all I remember. Sorry :/ Been a long time since I took these classes.

6. Traveling to the wall & back is 200m

100 + 100 = 200m total traveled

The time is 0.58s so, we can use the speed formula to solve [ s = d/t ] where s = speed, d = distance, and t = time.

s = 200/0.58

s = 344.82758

I don’t know if they’ll have you round, but I would say the speed of the sound is 344.8 m/s.

Sensible cooling is a type of cooling that eliminates the heat present in the air without eliminating its humidity. Cooling and Dehumidifying, Evaporative Cooling, Heating and Humidifying are some of the methods used for sensible cooling.

Sensible cooling uses air conditioners and cooling systems that are responsible for reducing the temperature of the air while maintaining its humidity.Sensible cooling works by removing the heat present in the air without removing any of its humidity. In the absence of humidity, air conditioning can be uncomfortable, dry, and harmful to the environment. This is because the removal of humidity can lead to dry skin, cracking paint, and wood damage.Cooling and Dehumidifying, Evaporative Cooling, Heating and Humidifying are some of the methods used for sensible cooling. Cooling and dehumidifying is a process that reduces the air temperature and eliminates excess moisture. On the other hand, evaporative cooling works by drawing air across a water-cooled pad, allowing it to absorb moisture and cool down. Heating and humidifying help to maintain an optimal level of humidity and temperature in indoor environments during the winter months. They add moisture to dry air, which makes it more comfortable and healthy for the occupants.

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Therefore, the mass of calcium hydroxide that reacts with 30.0g of phosphoric acid is 22.63 g.

To find the mass of calcium hydroxide that reacts with 30g of phosphoric acid, we need to know the balanced chemical equation for the reaction. The balanced chemical equation for the reaction is:

H3PO4 + Ca(OH)2 → Ca3(PO4)2 + 2H2O

Here, the mole ratio of phosphoric acid to calcium hydroxide is 1:1.

That is one mole of phosphoric acid reacts with one mole of calcium hydroxide.

We can use this mole ratio to calculate the number of moles of calcium hydroxide that react with 30.0 g of phosphoric acid.

Mass of H3PO4 = 30.0 g

Molar mass of H3PO4 = 98.0 g/mol

Number of moles of H3PO4 = Mass/Molar mass

= 30.0/98.0

= 0.306 mole

From the balanced chemical equation, we know that one mole of H3PO4 reacts with one mole of Ca(OH)2.

Therefore, the number of moles of Ca(OH)2 that react with 0.306 mole of H3PO4 is also 0.306 mole.

The molar mass of Ca(OH)2 is 74.1 g/mol.

Therefore, the mass of Ca(OH)2 that reacts with 0.306 mole of H3PO4 is:

Mass of Ca(OH)2 = Number of moles × Molar mass

= 0.306 × 74.1

= 22.63 g

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Explanation: Pottasium reacts with water vigorously and the reation is exothermic. The heat released causes the hydrogen released to ignite.

Answer: Pottasium reacts with water vigorously and the reation is exothermic. The heat released causes the hydrogen released to ignite.

Alkenes are unsaturated hydrocarbons with a double bond between carbon atoms. This double bond is a region of high electron density, making it susceptible to attack by electrophilic reagents like bromine.

When alkenes react with bromine, the double bond breaks, and a new bond forms between the carbon and bromine atoms. This process is known as addition reaction, and it is a characteristic of alkenes.
Bromine can react with alkenes in two ways: in the cold with pure liquid bromine or with a solution of bromine in an organic solvent like tetrachloromethane. In either case, the reaction results in the formation of a colorless liquid, as the red-brown color of the bromine disappears upon reaction.
In the case of ethene, the reaction with bromine yields 1,2-dibromoethane. This compound is formed when each carbon atom of the double bond becomes attached to a bromine atom. The resulting product is a saturated hydrocarbon with two bromine atoms bonded to it.

Overall, the reaction between alkenes and bromine is a useful method for synthesizing new compounds. By breaking the double bond and forming a new bond with bromine, alkenes can be transformed into new and more complex molecules.

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The correct answer is All of the answer choices are correct.

A biochemical process that involves the addition of phosphate to an organic compound. In biological systems, this reaction is vital for the cellular storage and transfer of free energy using energy carrier molecules.

The first step in the metabolism of carbohydrates is frequently their phosphorylation. Because the phosphate group stops the molecules from migrating back across the transporter, phosphorylation enables cells to store carbohydrates. Glucose phosphorylation is a crucial step in the metabolism of sugar.

The chemical formula for the first step of glycolysis, which involves the conversion of D-glucose to D-glucose-6-phosphate, is provided by

          D-glucose + ATP → D-glucose-6-phosphate + ADP

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The complete question is :

The process of phosphorylation

(a) adds a phosphate group to a molecule.

(b) may energize the target molecule.

(c) removes a phosphate group from a molecule.

(d) may change the shape of the target molecule.

(e) All of the answer choices are correct

Answer:

The alkaline earth metals are six chemical elements in group 2 of the periodic table. They are beryllium, magnesium, calcium, strontium, barium, and radium.

Hope this helped!

The temperature is 250 K.

The law that the product of the pressure and the volume of one gram molecule of an ideal gas is equal to the product of the absolute temperature of the gas and the universal gas constant.

By  ideal gas law , PV = nRT

P = 10 atm

V = 5 l

n = 2.5 mol

R = 0.0821 atm liter mol⁻¹ K⁻¹

T = Temperature is to find out according to question.

Put these values in PV = nRT

PV = nRT

10 × 5 = 2.5 × 0.0821 × T

T = 50/0.2

T = 250 K

Hence, the temperature is 250 K.

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Answer:0

Explanation: zero because it is the most stable form of oxygen in its standard state

The Arctic Ocean has experienced significant sea ice loss over the past 40 years due to rising global temperatures caused by human-induced climate change.

This pattern is probably going to go on as normal temperatures in the Cold keep on rising quicker than elsewhere in the world. This deficiency of ocean ice has extensive ramifications for worldwide atmospheric conditions.

As well with respect to the creatures that rely upon the ice, like polar bears, walruses, and other Icy untamed life. It additionally has monetary and international ramifications.

As the contracting ice cap is making it more straightforward to get to beforehand undiscovered oil and gaseous petrol stores, and likewise opening up new transportation paths could abbreviate the movement time among Asia and Europe.

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Answer:

Since it has 2 valence electrons

Explanation:

77.4 g/mol is the molar mass of a covalent compound if 0.995 g of it is dissolved in 24 ml of water and produces a freezing temperature of -0.64°C

To solve for the molar mass of the covalent compound, we need to use the freezing point depression equation:
ΔT = Kf m i
where ΔT is the change in freezing point (in Celsius), Kf is the freezing point depression constant for water (1.86 °C/m), m is the molality of the solution (in moles of solute per kilogram of solvent), and i is the van't Hoff factor (which is 1 for a covalent compound).
First, we need to calculate the molality of the solution:
m = moles of solute / mass of solvent (in kg)
Since 0.995 g of the compound is dissolved in 24 ml of water, the mass of solvent is 24 g (since the density of water is 1 g/mL). Therefore,
m = moles of solute / 0.024 kg
moles of solute = (0.995 g / molar mass of compound) / 0.024 kg
Next, we can plug in the given values for ΔT (-0.64 °C), Kf (1.86 °C/m), and m (calculated above) to solve for the molar mass of the compound:
-0.64 = 1.86 × [(0.995 / m) / 0.024]
molar mass of compound = 77.4 g/mol
Therefore, the molar mass of the covalent compound is 77.4 g/mol.

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According to the given picture:

A represents the atomic number.

B represents the chemical symbol.

C represents the atomic mass.

D represents the name of the element.

Answer:

NO2=Nitrogen dioxide

KCL=potassium chloride

NH3=Ammonia

Answer: Magnet

Explanation:Using a magnet is the best separating technique to be deployed in this case. The nails are easily picked out by just holding a magnet over the sandbox.

The amount of heat required to warm 10.0 grams of ice from -10.0°C to steam at 110.0°C is 29,513 J or 29.5 kJ.

To solve this problem, we need to break it down into several steps, since the heat required to warm the substance depends on its phase and temperature.

Heating the ice from -10.0°C to 0°C

The first step is to heat the ice from its initial temperature of -10.0°C to its melting point at 0°C. To do this, we need to calculate the heat required using the formula;

Q = m × C × ΔT

where Q is heat required, m is mass of the substance, C is specific heat capacity of the substance, and ΔT is the change in temperature.

The specific heat capacity of ice will be 2.09 J/g°C, so;

Q₁ = 10.0 g × 2.09 J/g°C × (0°C - (-10.0°C)) = 209 J

Melting the ice at 0°C

Next, we need to calculate the heat required to melt the ice at 0°C. The heat of fusion of ice will be 334 J/g, so;

Q₂ = 10.0 g × 334 J/g = 3340 J

Heating the water from 0°C to 100°C

Now that all the ice has melted, we need to heat the resulting water from 0°C to its boiling point at 100°C. The specific heat capacity of water is 4.18 J/g°C, so;

Q₃ = 10.0 g × 4.18 J/g°C × (100°C - 0°C) = 4180 J

Vaporizing the water at 100°C

Once the water reaches its boiling point at 100°C, we need to vaporize it into steam. The heat of vaporization of water will be 40.7 kJ/mol, or 2260 J/g. Since we know that 18.0 g of water make up one mole, we can calculate the heat required to vaporize 10.0 g of water as;

Q₄ = 10.0 g × 2260 J/g = 22,600 J

Heating the steam from 100°C to 110°C

Finally, we need to heat the steam from 100°C to its final temperature of 110°C. The specific heat capacity of steam is 1.84 J/g°C, so;

Q₅ = 10.0 g × 1.84 J/g°C × (110°C - 100°C) = 184 J

Total heat required

To find the total heat required to warm the ice from -10.0°C to steam at 110.0°C, we simply add up all the heats calculated in the previous steps;

\(Q_{total}\) = Q₁ + Q₂ + Q₃ + Q₄ + Q₅

= 209 J + 3340 J + 4180 J + 22,600 J + 184 J

= 29,513 J

Therefore, the amount of heat is 29,513 J or 29.5 kJ.

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Answer:

The atomic number is located at the upper left of the element.

Hope this helps!! :)