Determine the final temperature of sample with a specific heat of 1.1 J/g°C and a mass of 385 g if it starts out at a temperature of 19.5°C and 885 J of energy are added to it.

Answer:

solid liquid and gas

Explanation:

Answer: Forms: Liquid water, solid water (ice) and gaseous water (water vapor)

Explanation:

Obviously liquid water comes from the sink, ice can be found in the freezer, and water vapor comes from boiling water, it is always in the air around us.

Liquid water is used for hydration or for food preparation. Ice is used to cool things down or in drinks, and water vapor isn't really used by humans. Rather, it serves as a natural greenhouse gas.

Answer:

B

Explanation:

Both plain and plateau have flat surfaces. However, a plain is located in a low-lying area while a plateau is located on an elevated area. In essence, a plateau can be viewed as an elevated plain or a plain that is bordered by cliffs.

The correct option is B.

Answer:

47.6°C is the change of temperature

Explanation:

To solve this question we must use the equation of specific heat of a material:

Q = m*ΔT*S

Where Q is heat applied = 90J

m is the mass of the substance = 15g gold

ΔT is change in temperature = Our incognite

S is specific heat of the material = 0.126J/g°C for gold

Replacing:

90J = 15g*ΔT*0.126J/g°C

90J/15g*0.126J/g°C = ΔT

ΔT = 47.6°C is the change of temperature

The maximum volume of carbon dioxide that can be formed at RTP would be 0.48 L.

Sodium carbonate reacts with hydrochloric acid according to the following balanced equation:

\(Na_2CO_3 + 2HCl -- > 2NaCl + H_2O + CO_2\)

The mole ratio of the sodium carbonate that reacts to the carbon dioxide that is produced is 1:1. Thus 0.020 mol of sodium carbonate will be equivalent to 0.020 mol of carbon dioxide.

At room temperature and pressure (RTP), 1 mole of gas is equivalent to 24 L of gas.

Thus, 0.020 mol carbon dioxide would be equivalent to:

0.020 x 24 = 0.48 L

In other words, the maximum volume of carbon dioxide that can be produced from the reaction at RTP is 0.48 L.

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Answer: The European space agency's TerraSar-X satellite should be able to scan the entire Earth every day, as it has a ground resolution of 2.5 meters.

This is because TerraSar-X’s radar transmits at 10 gigahertz and been specifically designed to pick up natural surface motions from as far away as 13 kilometers. There are other satellites that can do this, but TerraSar-X can go below the clouds too – crucial if you're looking for a heat sink outside your window!

Furthermore, TerraSar-X also needs to have strong enough detectors for faint objects – reflections off ice or snow – because its antenna scatters frequencies in unpredictable patterns.

**ANSWER MADE BY AN AI**

Answer:

20 MPH (miles per hour)

Explanation:

You do miles / time (miles divided by time) to calculate the average speed!

Hope this helped ^^

One of the isomers of C4H10O that is an alcohol is the 1-butanol or butyl alcohol:

Another of the alcohols that has the given formula is tert-butanol or tert-butyl alcohol:

The third isomer of C4H10O is 2-butanol:

And the last isomer is isobutanol or isobutyl alcohol:

Face brick differs from building brick in that it is generally C. more uniform in size and color.

answer - The correct answer is C. Face brick differs from building brick in that it is generally more uniform in size and color. Face brick is specifically designed to be aesthetically pleasing and used for facing buildings, whereas building brick is used for structural purposes. Face brick is also typically made from higher quality clay and fired at higher temperatures to ensure consistent color and durability. However, it may not necessarily be more resistant to severe weathering or harder than building brick, and may not always be available in a variety of sizes. Face bricks are specifically manufactured for their appearance and are used in visible parts of construction, whereas building bricks prioritize structural integrity.

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The mass of potassium chloride (KCI) that will be formed if 36.2 g of potassium bromide (KBr) react with excess chlorine is 22.7 g

The mass of potassium chloride (KCI) that will be formed from the reaction can be obtain as illustrated below:

2KBr + Cl₂ -> 2KCl + 2Br₂

From the balanced equation above,

238 g of KBr reacted to produce 149 g of KCl

Therefore,

36.2 g of KBr will react to produce = (36.2 g × 149 g) / 238 g = 22.7 g of KCl

Thus, we can conclude from the above equation that the mass of potassium chloride (KCI) forned is 22.7 g

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Answer:

Length of RT = 9.22 cm to the nearest hundredth

Explanation:

Considering the image up in the attachment, ΔRST is a right-angled triangle.

The length of two sides of ΔRST is given as 11cm and 6 cm. The length of the third side which is RT can be obtained using Pythagoras ' rule which says that the sum of the squares of two sides of a right-angled triangle is equal to the square of the hypotenuse.

This rule is given as: c² = b² + a² where c is the hypotenuse and a and b are the other two sides of the right-angled triangle.

In ΔRST, the length of the hypotenuse = 11 cm, the length of one of the two sides = 6cm, length of RT = x

Solving for x: (11 cm)² =  (x cm)² + (6 cm)²

(x cm)² = 121 cm² - 36 cm²

(x cm)² = 85 cm²

x cm = √85

x = 9.22 cm to the nearest hundredth

Therefore, length of RT = 9.22 cm to the nearest hundredth

True. When selecting a solvent for recrystallization, it is important to consider several factors, one of which is solubility. The solute should dissolve in the solvent at room temperature to ensure a successful recrystallization process.

If the solute does not dissolve in the solvent at room temperature, it may be necessary to use elevated temperatures to facilitate dissolution, which can lead to impurities being carried over into the final product.

Additionally, if the solvent is too polar or non-polar compared to the solute, the solute may not dissolve at all or only partially dissolve, resulting in a low yield or poor quality crystals.

Therefore, selecting a suitable solvent with appropriate polarity and solubility characteristics is essential to achieve a high-quality final product during recrystallization.

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Nitric acid weighs 15.0 g, and 31.0 g of magnesium carbonate is mixed with it to create 31.0 g of \(Mg(No_3)_2\).Nitric acid is present in excess.

The chemical element magnesium has the atomic number 12 and the letter Mg as its symbol. It is a highly reactive, silvery-white metal that plays a significant role in the composition of the Earth's crust. Magnesium is the eighth most common element in the crust of the Earth and the ninth most common element in the cosmos.

It makes up a significant portion of the Earth's mantle and is a crucial component of numerous minerals, such as dolomite, talc, and chlorite. Magnesium is necessary for life since it is involved in numerous vital biological processes, such as protein synthesis, DNA replication, and energy consumption.  

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Benzoic acid is an organic compound that has the chemical formula C6H5COOH. It is a colorless crystalline solid that is soluble in water and has a characteristic odor. In this article, we will discuss the melting and boiling points of benzoic acid.

The melting point of benzoic acid is 122.4°C (252.3°F). This temperature is the point at which the solid form of benzoic acid transitions into its liquid form. The melting point of a substance is determined by the strength of the intermolecular forces between its molecules. In the case of benzoic acid, the intermolecular forces are primarily hydrogen bonds, which are strong bonds that form between hydrogen atoms in one molecule and oxygen or nitrogen atoms in another molecule.

The boiling point of benzoic acid is 249°C (480°F). The boiling point is the temperature at which the liquid form of benzoic acid transitions into its gaseous form. The boiling point of a substance is dependent on the strength of the intermolecular forces between its molecules. The stronger the intermolecular forces, the higher the boiling point will be. In the case of benzoic acid, the strong hydrogen bonds between its molecules contribute to its relatively high boiling point.

In conclusion, the melting and boiling points of benzoic acid are 122.4°C and 249°C respectively. These temperatures reflect the strength of the hydrogen bonds between the molecules of benzoic acid and play an important role in its physical properties and behavior.

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Answer:

False

Explanation:

Answer

Kinetic energy

Kinetic energy is produced by motion. In the driving example above, the only thing keeping the vehicle's potential energy from becoming kinetic energy is the car's brakes.

Explanation:

One kilogram over 1000 grams is the valid conversion factor. So the correct option is D.

Unit conversion is the expression of the same feature in a different unit of measurement. Time, for example, can be stated in minutes rather than hours, and distance can be translated from miles to kilometers, feet, or any other length measurement.

Measurements are frequently stated in one set of units, such as feet, but need alternative units, such as chains. A conversion factor is a numerical equation that allows for the equal exchange of feet and chains.

The AA conversion factor is a number that is used to multiply or divide one set of units into another. When converting to an equivalent value, the proper conversion factor must be utilized. To convert inches to feet, for example, the suitable conversion value is 12 inches equal to 1 foot. The suitable conversion value for minutes to hours is 60 minutes = 1 hour.

Therefore, the correct option is D.

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Answer:

one kilogram over 1,000 grams

Explanation:

I got it right on the test.

Answer:

Tornadoes form when warm, humid air collides with cold, dry air.

Explanation:

The denser cold air is pushed over the warm air, usually producing thunderstorms. The warm air rises through the colder air, causing an updraft. The updraft will begin to rotate if winds vary sharply in speed or direction.

// have a great day //

Answer:

your question says of the following but their isn't any of the following ):

Explanation:

But other than than that person right up above

200ml of NaOH is required to reach the equivalence point.

Titration is a standard quantitative chemical analysis laboratory method for determining the concentration of a specified analyte. The titrant or titrator is a reagent that is produced as a standard solution of known concentration and volume. Titration is an essential technique in analytical chemistry, and it is also known as volumetric analysis.

A chemical reaction's equivalence point, also known as the stoichiometric point, is the point at which chemically equivalent quantities of reactants have been combined. The equivalence point for an acid-base reaction is the point at which the moles of acid and base would neutralise each other according to the chemical reaction.

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Deprotonation of phenol by NaOHPhenol is a weak acid with a pKa value of 10, so it is not very acidic but it can be deprotonated with a strong base like sodium hydroxide (NaOH). The mechanism for this reaction is a simple acid-base reaction where NaOH acts as a base and removes the proton (H+) from phenol.

The curved arrow mechanism is shown below:Here, the Na+ ion comes in and removes the H+ ion from the O-H bond in phenol and forms water as a by-product. The major organic product is phenoxide ion (C6H5O−) which is formed after the deprotonation reaction.SN2 reaction of phenoxide with chloroethane Phenoxide ion is a good nucleophile because it has a negative charge on the oxygen atom which is able to attack the positively charged carbon atom in chloroethane. The mechanism for this reaction is a nucleophilic substitution (SN2) reaction where the phenoxide ion acts as a nucleophile and replaces the chloride ion in chloroethane. The curved arrow mechanism is shown below:Here, the phenoxide ion attacks the carbon atom in chloroethane, and the chloride ion leaves as a leaving group. The major organic product is ethyl phenyl ether (C6H5OC2H5) which is formed after the SN2 reaction.

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Answer:

5.12 atm

Explanation:

Before you can use the Ideal Gas Law to find the pressure, you need to convert grams to moles (via molar mass).

Molar Mass (H₂): 2(1.008 g/mol)

Molar Mass (H₂): 2.016 g/mol

 1.8 grams H₂               1 mole
----------------------  x  ----------------------  =  0.893 moles H₂
                                 2.016 grams

The Ideal Gas Law equation looks like this:

PV = nRT

In this equation,

-----> P = pressure (atm)

-----> V = volume (L)

-----> n = moles

-----> R = Ideal Gas Constant (0.0821 L*atm/mol*K)

-----> T = temperature (K)

After converting Celsius to Kelvin, you can plug the given values into the equation and simplify to find the pressure.

P = ? atm                                R = 0.0821 L*atm/mol*K

V = 4.3 L                                T = 27 °C + 273.15 = 300.15 K

n = 0.893 moles

PV = nRT

P(4.3 L) = (0.893 moles)(0.0821 L*atm/mol*K)(300.15 K)

P(4.3 L) = 22.0021

P = 5.12 atm

**Based on my past experiences, I believe the constant (R) you provided may have been mistyped. Instead of 0.821, I used 0.0821.**

Explanation:

Plant cells have a cell wall, as well as a cell membrane. In plants, the cell wall surrounds the cell membrane. This gives the plant cell its unique rectangular shape. Animal cells simply have a cell membrane, but no cell wall.

The pH at the equivalence point in the titration of 50.0 ml of 0.300 M CH₃COOH with 0.3 M NaOH is approximately 4.68.

To calculate the pH at the equivalence point, we need to determine the concentration of acetate ion (CH₃COO⁻) and hydronium ion (H³O⁺) at this point.

At the start of the titration, the initial concentration of acetic acid is 0.300 M and the initial concentration of hydronium ion is the same.

Let's say that x moles of NaOH are added to the solution. This will lead to the formation of x moles of acetate ion (CH³COO⁻) and x moles of hydroxide ion (OH⁻).

The final concentration of acetic acid will be (0.300 M - x M) and the final concentration of hydronium ion will be (x M).

The ionization constant (Ka) for acetic acid can be used to determine the concentration of acetate ion and hydronium ion in the solution. The equation for the ionization of acetic acid is:

CH₃COOH + H₂O ↔ CH₃COO⁻ + H₃O⁺

Ka = [CH₃COO⁻][H₃O⁺] / [CH₃COOH]

At the equivalence point, [CH₃COOH] = (0.300 M - x M), [CH₃COO⁻] = x M, and [H₃O⁺] = x M. Substituting these values into the equation for Ka, we get:

1.8 x 10⁻⁵ = (x)(x) / (0.300 - x)

Solving for x, we get:

x = 2.1 x 10⁻⁵ M

The pH at the equivalence point is equal to the negative log of the hydronium ion concentration:

pH = -log[H₃O⁺] = -log(2.1 x 10⁻⁵) = 4.68

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45 ml of  0.100M NaOH is required to completely neutralize 15.00mL of 0.100M H₃PO₄.

A neutralization reaction is when an acid and a base react to shape water and salt and includes the aggregate of H+ ions and OH- ions to generate water. The neutralization of a robust acid and strong base has a pH same to 7.

Neutralization is a chemical reaction in which acid and a base react quantitatively with each different. In a response in water, neutralization results in there being no extra hydrogen or hydroxide ions present within the solution.

Given;

M₁ = 0.100M NaOH

valance factor n₁ = 1

V₁ = ?

M₂ = of 0.100M H3PO4

valance factor n₂ = 3

V₂ = 15.00mL

M₁n₁V₁ = M₂n₂V₂

V₁ = M₂n₂V₂/M₁n₁

    = 0.1 × 3 × 15 / 0.1 × 1

     = 45 ml

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Many vegetable oils contain large amounts of : omega - 6 polyunsaturated fatty acids.

The Omega - 6 fatty acids are the type of the polyunsaturated fat that is found in the vegetable oils, nuts and the seeds. When it is eaten in the moderation and in the place of the saturated fats, the omega-6 fatty acids will be good for the heart and it appear to be protect against the heart disease. The omega 6 are the family of the polyunsaturated fatty acids that contain the common  final carbon-carbon double bond .

Thus, the omega 6 fatty acids are present in many vegetable oils  that is in the large amount.

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To solve this we must be knowing each and every concept related to   ideal gas equation. Therefore, the pressure when the volume is doubled is  3atm.

Ideal gas equation is the mathematical expression that relates pressure volume and temperature.

Mathematically the relation between Pressure, volume and temperature can be given as

PV=nRT

where,

P = pressure of gas

V= volume of gas

n =number of moles of gas

T =temperature of gas

R = Gas constant = 0.0821 L.atm/K.mol

rearranging the above equation, we get

P₁V₁= P₂V₂

{ (6atm) (10dm\(_3\))}  ={ ( P₂) (20dm\(_3\))}

P₂ = 3atm

Therefore, the pressure when the volume is doubled is  3atm.

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Answer:

At a stream's headwaters, often high in the mountains, gradients are steep. The stream moves fast and does lots of work eroding the stream bed.As a stream moves into lower areas, the gradient is not as steep. Now the stream does more work eroding the edges of its banks.

hope that helps bby<3

Answer:

Step-1:write the reaction.

HCl+NaOH ----->NaCl+H₂O

Step-2:In the left side, we have

H

Cl

Na

O

Explanation:

Answer:

Shifts to the left

Explanation:

Usually when adding HCl to a system it reduces stress causing the equilibrium to go to the left

Scratching causes cracks and crevices on the surface of the flask (though microscopically). These will act as favorable sites for nucleation, which leads to the formation of crystals.