What is the name for the electrons involved in metallic bonding ?

Answer:

70 watts

Explanation:

Statement C is not true. A combination reaction is not called retrosynthesis.

Retrosynthesis is a term used in organic chemistry to describe the process of planning the synthesis of a complex molecule by breaking it down into simpler precursor compounds. On the other hand, a combination reaction refers to a chemical reaction where two or more substances combine to form a single compound.

Examples of combination reactions include the reactions mentioned in statements A and D, where magnesium reacts with oxygen to form magnesium oxide and sodium reacts with chlorine to form sodium chloride, respectively.

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Better temperatures can growth the quantity of water vapor withinside the air, that could growth the probability of precipitation.

Different factors, inclusive of air pressure, wind, and atmospheric instability, additionally play a function withinside the formation of rain, and the connection among temperature and precipitation may be complicated. The temperature of atmospheric gases could have a substantial effect at the manufacturing of rain. The environment is a complicated device that performs a vital function with inside the Earth`s water cycle, which incorporates the system of precipitation, inclusive of rain. Precipitation takes place while water vapor with inside the air condenses into liquid droplets or ice crystals, which fall to the floor as rain, snow, or hail. The temperature of the environment impacts the quantity of water vapor that the air can preserve. As temperature increases, the air can preserve extra water vapor, that could cause better tiers of humidity. When the air will become saturated with water vapor, it reaches its dew point, and the extra water vapor condenses into liquid droplets or ice crystals, that could shape clouds and subsequently precipitation. In addition, international warming, that's inflicting an growth in atmospheric temperatures, can cause modifications in precipitation styles and extra severe climate events. Understanding the connection among temperature and precipitation is vital for predicting and mitigating the affects of weather change.

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Answer: 4.59 x 10^-3 J/(g x degrees Celsius) = Cs

Explanation:

Use the equation q = m x Cs x delta T to find the specific heat capacity of the substance.

q = heat in joules

m = mass of substance in grams

Cs = specific heat capacity in J/(g x degrees Celsius)

delta T = change in temperature in degrees Celsius

Step 1: Identify all quantities given in the problem.

q = 2.41 x 10 J

Note: Not sure if this number was supposed to have an exponent or not. I used what was posted by the person asking the question.

m = 105.0 g

Cs = variable we are trying to find

delta T = Temp. final – Temp. initial = 75.0 degrees Celsius – 25.0 degrees Celsius = 50.0 degrees Celsius

Step 2: Place all known quantities into the equation.

q = m x Cs x delta T

2.41 x 10 J = 105.0 g x Cs x 50.0 degrees Celsius

Step 3: Isolate the unknown variable, in this case Cs.

2.41 x 10 J = (105.0 g x Cs x 50.0 degrees Celsius) / (105.0 g x 50.0 degrees Celsius)

When you divide to isolate Cs, the units of grams and degrees Celsius cancel on the right side of the equation.

2.41 x 10 J / (105.0 g x 50.0 degrees Celsius) = Cs

4.59 x 10^-3 J/(g x degrees Celsius) = Cs

Answer:

0.136 J/(g°C)

Explanation:

We can use the formula for specific heat:

q = mcΔT

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

Rearranging the formula, we get:

c = q / (m * ΔT)

Substituting the given values, we get:

c = 13.70 J / (21 g * 4.90°C)

c = 0.136 J/(g°C)

Therefore, the specific heat of platinum is 0.136 J/(g°C).


ALLEN

Answer:

Explanation:

The pH of a solution is the negative logarithm (base 10) of its hydrogen ion concentration (H+):

pH = -log[H+]

In this case, the hydrogen ion concentration is 0.0048 M, so we can calculate the pH as:

pH = -log(0.0048) = 2.32

Therefore, the pH of the solution is 2.32.

Since the pH is less than 7, the solution is acidic.

The milliliters of hot air that a balloon's gondola is suspended below is 2775millilitres.

Litres and millilitres are both unit of measures of volume.

According to this question, a hot air balloon's gondola is suspended below a cloth envelope containing 2.775 x 10⁰ liters of hot air.

The conversion factors of litres to milllilitres;

1000mL = 1L

2.775 × 10⁰ × 1000 = 2775millilitres

Therefore, the milliliters of hot air that a balloon's gondola is suspended below is 2775millilitres.

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1. C6H10O5 + 6O2 → 6CO2 + 5H2O

2. MgO + H2O → Mg(OH)2

3. 151.2444 grams of carbon dioxide are required to produce 3.44 moles of carbonic acid in the blood.

1. The complete, balanced chemical reaction for the burning of cellulose (C6H10O5), or wood, is:

C6H10O5 + 6O2 → 6CO2 + 5H2O

This reaction represents the combustion of cellulose in the presence of oxygen, resulting in the formation of carbon dioxide (CO2) and water (H2O).

2. The balanced equation for the reaction between magnesium oxide (MgO) and water (H2O) to produce magnesium hydroxide (Mg(OH)2) is:

MgO + H2O → Mg(OH)2

According to the equation, 1 mole of magnesium oxide reacts with 1 mole of water to produce 1 mole of magnesium hydroxide. Therefore, if 2.55 moles of magnesium oxide react, the same number of moles of magnesium hydroxide will be produced.

3. The balanced equation for the reaction between carbon dioxide (CO2) and water (H2O) to form carbonic acid (H2CO3) is:

CO2 + H2O → H2CO3

According to the equation, 1 mole of carbon dioxide reacts with 1 mole of water to produce 1 mole of carbonic acid. Therefore, if 3.44 moles of carbonic acid are produced, the same number of moles of carbon dioxide is required.

To calculate the mass of carbon dioxide, we need to know its molar mass, which is approximately 44.01 g/mol. Therefore, the mass of carbon dioxide required to produce 3.44 moles of carbonic acid is:

Mass = Moles × Molar mass

Mass = 3.44 moles × 44.01 g/mol

Mass = 151.2444 g

Therefore, 151.2444 grams of carbon dioxide are required to produce 3.44 moles of carbonic acid in the blood.

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\(98.56 dm^3\) of oxygen at STP would be required to react completely with 38.8g of propane.

Given that :

molar mass of propane = 44 g/mol

mass of propane = 38.8 g

∴ Moles present in 38.8 g of propane = \(\frac{38.8}{44}\) = 0.88 mole

applying rule of balanced equations

1 mole of propane = 5 moles of oxygen

0.88 mole of propane =  5 * 0.88 = 4.4 moles of oxygen

Note : volume of 1 mole of oxygen at STP = \(22.4 dm^3\)

∴Total volume of oxygen required at STP = 22.4 * 4.4 = \(98.56 dm^3\)

Hence we can conclude that the volume of oxygen at STP required to react completely \(98.56 dm^3\)

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From the calculation, the compound is MgSO4.2H2O.

A hydrated salt is a salt that contains molecules of the water of crystallization.

a) Percentage of the water of crystallization =  3.211 g  - 2.539g/ 3.211 g * 100/1 = 21%

b) Number of moles of water of crystallization = 3.211 g  - 2.539g/ 18 g/mol =

0.037 moles

c) Number of moles of anhydrous salt =  2.539g/120 g/mol = 0.021 moles

Number of moles of hydrated salt = 3.211 g/120 + 18x

Hence;

0.021 = 3.211 /120 + 18x

0.021(120 + 18x) =  3.211

2.52 +  0.378x = 3.211

0.378x  = 3.211  - 2.52

x = 3.211  - 2.52/ 0.378

x = 2

Hence the compound is MgSO4.2H2O

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The percentage error, given that the measured density of the metal is 4.16 g/cm³, is 3.53%

First, we shall determine the absolute error in the measurement. Details below:

Absolute error = accepted value - measured value

Absolute error = 4.018 - 4.16

Absolute error = 0.142 g/cm³

Haven obtain the absolute error, we shall determine the percentage error. This can be obatined as follow:

Percentage error = (Absolute error / accepted value) × 100

Percentage error = (0.142 / 4.018) × 100

Percentage error = 3.53%

Thus, we can conclude that the percentage error is 3.53%

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Answer:

not dependent on light, light independent

Explanation:

Calvin's Cycle is a process where plants and algae use CO2 in the air into glucose. They do not need to be dependent on light to produce glucose (in other words not involving photoexcitation, the process of production using light).

Answer:

+2

Explanation:

Because the charge of the chloride ion is negative, that means that the charge of the magnesium ion must be positive since cations and anions go together, not cation and cation nor anion and anion. Using the "reverse criss-cross method", since the subscript of Mg is 1, that means that this is the lowest whole number ratio so we don't need to worry about simplifying. Therefore, since the charge of Cl is 2, the answer is +2.

The SI unit to the quantity it measures are:

Mass: The mass of an object is a measure of its amount of matter. The SI unit of mass is the kilogram (kg) or gram (g).

Temperature: Temperature is a measure of the average kinetic energy of the particles in a substance. The SI unit of temperature is the kelvin (K).

Time: Time is a measure of the interval between two events. The SI unit of time is the second (s).

Electric current: Electric current is a measure of the flow of electric charge. The SI unit of electric current is the ampere (A).

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Complete question:

Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.

Match each SI unit to the quantity it measures.

The second option 1,870.4 Joules

Answer:

The answer is B(scale)

Explanation:

Since the question asked about a range, the scale would be the most logical answer since scales are used to measure.

Answer:

the answer is C.

Explanation:

At equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.

1: Write the balanced chemical equation:

\(C_O\)(g) + \(Cl_2\)(g) ⟶ \(C_OCl_2\)(g)

2: Set up an ICE table to track the changes in moles of the substances involved in the reaction.

Initial:

\(C_O\)(g) = 0.3500 mol

\(Cl_2\)(g) = 0.05500 mol

\(C_OCl_2\)(g) = 0 mol

Change:

\(C_O\)(g) = -x

\(Cl_2\)(g) = -x

\(C_OCl_2\)(g) = +x

Equilibrium:

\(C_O\)(g) = 0.3500 - x mol

\(Cl_2\)(g) = 0.05500 - x mol

\(C_OCl_2\)(g) = x mol

3: Write the expression for the equilibrium constant (Kc) using the concentrations of the species involved:

Kc = [\(C_OCl_2\)(g)] / [\(C_O\)(g)] * [\(Cl_2\)(g)]

4: Substitute the given equilibrium constant (Kc) value into the expression:

1.2 x \(10^3\) = x / (0.3500 - x) * (0.05500 - x)

5: Solve the equation for x. Rearrange the equation to obtain a quadratic equation:

1.2 x \(10^3\) * (0.3500 - x) * (0.05500 - x) = x

6: Simplify and solve the quadratic equation. This can be done by multiplying out the terms, rearranging the equation to standard quadratic form, and then using the quadratic formula.

7: After solving the quadratic equation, you will find two possible values for x. However, since the number of moles cannot be negative, we discard the negative solution.

8: The positive value of x represents the number of moles of \(Cl_2\)(g) at equilibrium. Substitute the value of x into the expression for \(Cl_2\)(g):

\(Cl_2\)(g) = 0.05500 - x

9: Calculate the value of \(Cl_2\)(g) at equilibrium:

\(Cl_2\)(g) = 0.05500 - x

\(Cl_2\)(g) = 0.05500 - (positive value of x)

10: Calculate the final value of \(Cl_2\) (g) at equilibrium to get the answer.

Therefore, at equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.

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Answer:

Molar mass = 71.76 g/mol

Explanation:

The relationship between molar mass and rate of effusion is given as;

Vh / Vu = √ (Mu / Mh)

The rate of effusion of a gas is inversely proportional to the square root of the mass of its particles.

Rate = volume /  time (Assuming Volume = 1)

Vh = Rate of effusion of Hydrogen = 1 / 2.42

Vu = Rate of effusion of unknown gas = 1 / 14.5

Mh = Molar mass of hydrogen = 2

Mu = Molar mass of unknown gas = x

Substituting into the formular, we have;

(1 / 2.42) / (1 / 14.5) = √ ( x / 2)

5.99 = √ ( x / 2)

35.88 = x / 2

x = 71.76

Answer:

a. pH = 7.0

b. pH = 12.52

c. pH = 12.70

d. pH = 12.78

Explanation:

a. Deionized water has the [H⁺] of pure water = 1x10⁻⁷ (Kw = 1x10⁻¹⁴ = [H⁺][OH⁻] - [H⁺] = [OH⁻ -)

pH = -log[H⁺] = 7

b. Moles NaOH = 5x10⁻³L * (0.10mol / L) = 5x10⁻⁴moles OH⁻ / 0.015L = 0.0333M = [OH⁻]

-Total volume = 10mL+5mL = 15mL = 0.015L

pOH = -log[OH⁻] = 1.48

pH = 14-pOH

pH = 12.52

c. Moles NaOH = 0.010L * (0.10mol / L) = 1x10⁻³moles OH⁻ / 0.020L = 0.0500M = [OH⁻]

-Total volume = 10mL+10mL = 20mL = 0.020L

pOH = -log[OH⁻] = 1.30

pH = 14-pOH

pH = 12.70

d. Moles NaOH = 0.015L * (0.10mol / L) = 1.5x10⁻³moles OH⁻ / 0.025L = 0.060M = [OH⁻]

-Total volume = 10mL+15mL = 25mL = 0.025L

pOH = -log[OH⁻] = 1.22

pH = 14-pOH

pH = 12.78

The action that would most likely reduce water pollution is A) initiating efforts to remove trash from the ocean.

Trash and plastic waste in the ocean pose a significant threat to marine life and ecosystems. Initiating efforts to remove trash from the ocean can help mitigate this problem and reduce water pollution. When plastic waste accumulates in oceans, it can break down into microplastics, which are ingested by marine organisms and can enter the food chain, causing harm to both marine life and humans.

By actively removing trash from the ocean, we can prevent it from further degrading and releasing pollutants. This can help protect marine habitats, reduce the risk of entanglement or ingestion by marine animals, and preserve the overall health of ocean ecosystems.

On the other hand, options B, C, and D would likely contribute to increased water pollution:

B) Eliminating laws and regulations on industrial waste would remove important safeguards and oversight, potentially allowing industries to discharge pollutants directly into water bodies, leading to increased water pollution.

C) Promoting the use of oil and gas can lead to oil spills, leakage, and contamination of water sources. This can have severe consequences for aquatic ecosystems and human health.

D) Removing the ban on chlorofluorocarbons (CFCs) would result in the release of these harmful substances, which deplete the ozone layer and can contaminate water sources when disposed of improperly.

In conclusion, initiating efforts to remove trash from the ocean is the most effective action to reduce water pollution, while the other options would likely exacerbate the problem. Therefore, Option A is correct.

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Answer:

B. the initial fees to open the account

C. the fees charged for late payments

E. the annual percentage rate for the card

Explanation:

Edg

The pressure of the gas at the cooler temperature, given that the gas at 110 °C exerts a pressure of 225 torr, is 198.6 torr

The following data were obtained from the question:

The new pressure of the gas can be obtained as shown below:

P₁ / T₁ = P₂/ T₂

225 / 383 = P₂ / 338

Cross multipl

383 × P₂ = 225 × 338

383 × P₂ = 76050

Divide both sides by 383

P₂ = 76050 / 383

P₂ = 198.6 torr

Thus, we can conclude the pressure at the cooler temperature is 198.6 torr

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The growth of the new plant depicts the asexual reproduction characteristic. The characteristic that describes the growth of the new plant in Stephan's mother cutting a twig from a rose bush and planting it in the soil is asexual reproduction.

Asexual reproduction is the mode of reproduction by which organisms generate offspring that are identical to the parent's without the fusion of gametes. Asexual reproduction is a type of reproduction in which the offspring is produced from a single parent.

The offspring created are clones of the parent plant, meaning they are identical to the parent.The new plant in Stephan’s mother cutting a twig from a rose bush and planting it in the soil depicts the process of asexual reproduction, which is the ability of a plant to reproduce without seeds. In asexual reproduction, plants can reproduce vegetatively by cloning themselves using their roots, bulbs, or stems.

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Answer:

1) Combustion

2)Synthesis

3)Single Replacement

4)Decomposition

5)Double Replacement

6)Synthesis

7)Double Replacement

8)Single Replacement

9)Combustion

10)Decomposition

Explanation:

Remeber, decomposisition is breaking things apart, synthesis is building them, cobusion will always make water and CO2 and will always burn O2, single replacemnt will have 1 thing replaced (single) and double replacement will have 2 things replaced (double).

Hope this helps!

Answer:

low density

Explanation:

Because hydrogen make a natural choice For one of it The 1st practical use

Hydrogen gas has lower density than air. This is why it is used to fill balloons.

Hydrogen is the lightest element found in nature. It has a density of 0.08988 g/L under normal conditions. This leads to hydrogen gas being lighter than any other gas in similar volume. Thus balloons filled with hydrogen gas rise much better than balloons filled with other gases like helium.

However, hydrogen is far less commonly used to fill balloons. The reason being that hydrogen is a highly flammable gas. Whereas gasses like helium which are noble gasses are much safer to use.

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Answer:

A. Chemical potential to Kinetic energy

Explanation:

The car engine burns gas to produce motion. Burning is a form of chemical reaction and the motion produced is the kinetic energy.

Answer:

I don't know what the hell is going on with the this.