An unknown mass of aluminum requires 6290 joules to raise the tempature from 23.9 degrees c to 80.0 degrees c what is the Mass of aluminum

Answer:

sodium fusion is changed to sodium sulphide if sulphur is present in the compound

Answer:

Endothermic reactions are chemical reactions in which the reactants absorb heat energy from the surroundings to form products.

Answer:

Chemical reactions that absorb (or use) energy overall are called endothermic. In endothermic reactions, more energy is absorbed when the bonds in the reactants are broken than is released when new bonds are formed in the products.

Increasing order of magnitude of lattice energy is rbi <K2s< Mgs < Ga2O3.

Lattice energy is the energy change upon the formation of one mole of a crystalline ionic compound from its constituent ions. It depends upon the charges of the ion and the distance between the center of the ion when they are packed in the form crystal. Basically lattice energy is determined by the charge of the atom and the atomic radii of the atoms.

In Ga2O3, Ga has 3+ and O has 2- ions .so it has the lattice energy of 6.this is calculated by multiplying q1 and q2 .this attracts strongly.

In rbI , R has +1 and i has -1.so it ha lattice energy of -1.ther is no strong attraction nor lattice energy.

In Mgs, Mg has +2 and s has -2 .this is not as strong as Ga2o3 but stronger than rbi.

In K2S, k has =1  and s has 2-.this is stronger than rbi.

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Answer:

Explanation:

Answer:

Environmental Science

Explanation:

Answer:

0.84kg of gatorade powder

Explanation:

From the question given, we were told that 0.6kg of gatorade powder required 5 gallons of water.

To obtain the mass of gatorade needed for 7 gallons of water, we simply do the following:

0.6kg of gatorade powder required 5 gallons of water.

Therefore, xkg of gatorade powder will require 7 gallons of water i.e

xkg of gatorade powder = (0.6 x 7)/5

xkg of gatorade powder = 0.84kg

Therefore, 0.84kg of gatorade powder will be required.

The grams of H₂ produced, if the chemical reaction produces 129 grams of  AlCl₃ are 2.92 grams. (Option b)

To determine the grams of H₂ produced, we need to use the balanced equation and the molar ratios between AlCl₃ and H₂.

From the balanced equation:

2 moles of AlCl₃ react with 3 moles of H₂

To find the moles of AlCl₃ produced:

129 grams AlCl₃ x (1 mole AlCl₃ / molar mass AlCl₃) = moles of AlCl₃

Now, using the molar ratios, we can determine the moles of H₂ produced:

moles of AlCl₃ x (3 moles H₂ / 2 moles AlCl₃) = moles of H₂

Finally, we can convert the moles of H₂ back to grams:

moles of H₂ x (molar mass H₂ / 1 mole H₂) = grams of H₂

Let's calculate it:

Given:

Mass of AlCl₃ produced = 129 grams

Molar mass of AlCl₃:

Al: 26.98 g/mol

Cl: 35.45 g/mol x 3 = 106.35 g/mol

Total molar mass = 26.98 g/mol + 106.35 g/mol = 133.33 g/mol

Calculations:

moles of AlCl₃ = 129 g AlCl₃ / 133.33 g/mol = 0.9676 moles AlCl₃

moles of H₂ = 0.9676 moles AlCl₃ x (3 moles H₂ / 2 moles AlCl₃) = 1.4514 moles H₂

grams of H₂ = 1.4514 moles H₂ x (2.02 g/mol / 1 mole H₂) = 2.93 grams of H₂

Therefore, the correct answer is b. 2.92 grams.

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The hindbrain consists of the brain stem which encompasses the medulla oblongata, pons, and cerebellum. The Option B.

These structures are located at the base of the brain and are responsible for essential functions such as regulating vital autonomic processes, controlling balance and coordination .

It also relays sensory and motor information between the brain and the rest of the body. The hindbrain plays a crucial role in maintaining basic bodily functions and facilitating smooth movement. Therefore, the Option B is correct.

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Answer:the liquid

Explanation: its harmful

Answer:

0.067 ton/Litre.

Explanation:

645 Newtons per quart to tons per liter.

We'll begin by converting 645 Newton/quart to gram/quart (g/q). This can be obtained as:

1 N/q = 100 g/q

Therefore,

645 N/q = 645 N/q × 100 g/q / 1 N/q

645 N/q = 64500 g/q

Therefore, 645 Newton/quart is equivalent to 64500 grams per quart.

Next, we shall convert 64500 grams per quart to pounds per quart. This can be obtained as follow:

454 g/q = 1 pound/q

Therefore,

64500 g/q = 64500 g/q × 1 p/q / 454 g/p

64500 gram/quart = 142.07 pound/quart

Therefore, 64500 gram/quart is equivalent to 142.07 pound/quart.

Next, we shall convert 142.07 pound/quart to ton/quart. This can be obtained as follow:

2000 p/q = 1 ton/q

Therefore,

142.07 p/q = 142.07 pq × 1 ton/q / 2000 p/q

142.07 pound/quart = 0.071 ton/quart

Therefore, 142.07 pound/quart is equivalent to 0.071 ton/quart.

Finally, we shall convert 0.071 ton/quart to ton/litre. This can be obtained as follow:

1 ton/q = 1/1.06 ton/L

Therefore,

0.071 ton/q = 0.071 ton/q × 1/1.06 ton/L / 1 ton/q

0.071 ton/quart = 0.067 ton/Litre

Therefore, 0.071 ton/quart is 0.067 ton/Litre.

From the above illustration, 645 Newton/quart is equivalent to 0.067 ton/Litre.

Explanation:

1 As you go down a group, the atomic radius of the elements increases.

2 This trend is caused by the increase in the number of electron shells as you go down a group. As more electron shells are added, the distance of the outermost electrons from the nucleus increases, resulting in a larger atomic radius.

3 (a) S

(b) Na

(c) B

(d) Br

(e) Mg

(f) O

4 Ionization energy is the amount of energy required to remove an electron from an atom or an ion.

5 Sodium has a low ionization energy because its outermost electron is only weakly attracted to the nucleus. The electron is therefore relatively easy to remove, resulting in the formation of a 1+ ion. Magnesium, on the other hand, has a higher ionization energy because its outermost electron is more strongly attracted to the nucleus. It takes more energy to remove this electron, resulting in the formation of a 2+ ion.

6 (a) Li

(b) Na

(c) Cl

(d) Li

(e) Ca

(f) Ar

Ionization energy generally increases as you go across a row in the periodic table. This is because the electron shielding effect decreases and the nuclear charge increases as you go from left to right in a row. The electron is therefore more strongly attracted to the nucleus, requiring more energy to remove it.

b) The freezing point of the solution is less than the freezing point of the pure liquid solvent

c) The vapour pressure above the solution is greater than the vapour pressure above the pure liquid solvent

e) The boiling point of the solution is greater than the boiling point of the pure liquid solvent

What is Freezing Point?

Freezing point is the temperature at which a liquid turns into a solid upon cooling, at a given pressure. It is the temperature at which the vapor pressure of the liquid phase and solid phase of a substance are equal, and hence the liquid and solid are in equilibrium. At this point, the liquid loses its fluidity and turns into a solid form.

When a non-volatile solute (one that does not evaporate easily) is dissolved in a liquid solvent, the solution's physical properties, such as boiling point, freezing point, and vapour pressure, are affected. The extent of these changes is determined by the concentration of the solute in the solution.

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Electronic configuration is

\(\\ \tt\hookrightarrow 1s^22s^22p^63s^23p^64s^03d^3\)

When a strong acid and weak base are combined, the salt that will form is ammonium chloride (NH4Cl). Ammonium chloride (NH4Cl) is a salt that is formed when a strong acid (HCl) is combined with a weak base (NH3).

The reaction between hydrochloric acid (HCl) and ammonia (NH3) can be expressed as follows:HCl + NH3 → NH4ClThe reaction is an acid-base neutralization reaction, where the acid (HCl) donates a proton (H+) to the base (NH3) to form a salt (NH4Cl).In this reaction, hydrochloric acid (HCl) is a strong acid and ammonia (NH3) is a weak base. Therefore, the resulting salt, ammonium chloride (NH4Cl), is a salt that is formed when a strong acid and weak base are combined.In contrast, NaCl is formed when a strong acid (HCl) is combined with a strong base (NaOH). AICI3 is a salt that is formed when aluminum (Al) reacts with hydrochloric acid (HCl). H20, or water, is not a salt; it is a covalent compound.

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Answer:

The answer is A: step one should be urine flows from the kidneys to the ureters.

Explanation:

I did the test and got it right :)

Answer:

A is your answer

Explanation:

Moreover, gold has an atomic mass of 196.9665. This indicates that 196.9665 grammes (196.9665 g/mol) are the weight of one mole of gold. Considering that data

Atomic mass is the amount of matter that makes up an element's atom. It is written as a multiple of 1.992646547 1023 gramme, or one-twelfth of the mass of the carbon-12 atom, which is given an atomic mass of 12 units. On this scale, 1.660539040 1024 gramme is equal to 1 atomic mass unit (amu). In honour of the English chemist John Dalton, the atomic mass unit is often known as the dalton (Da). The total mass of the protons, neutrons, and electrons that compensate an atom is a little bit less than the observable atomic mass. The conversion of the difference, known as the mass defect, into binding energy during the collision of these particles accounts for it.

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Answer:

Phosphoric Acid is an acid-containing four atoms of oxygen, one atom of phosphorus, and three atoms of hydrogen. It is also known as phosphoric(V) acid or orthophosphoric acid.

Explanation:

Answer:

Phosphoric Acid is an acid-containing four atoms of oxygen, one atom of phosphorus, and three atoms of hydrogen. It is also known as phosphoric(V) acid or orthophosphoric acid.

When hex-3-yne reacts with one equivalent of HCl, the major product is 3-chlorohex-1-ene. This is because the HCl adds across the triple bond in a regioselective manner, following Markovnikov's rule.

The major product for the reaction of hex-3-yne with one equivalent of HCl is 3-chlorohexene. The HCl adds to the triple bond, breaking the π-bond and forming a new σ-bond between the H and the C.

The addition occurs through a Markovnikov addition, meaning the Cl attaches to the carbon with more hydrogens already attached. This is because the positive charge on the intermediate carbocation is stabilized by the additional hydrogens.

The mechanism for the reaction involves protonation of the triple bond to form a carbocation intermediate. The HCl then adds to the carbocation to form the final product. Here is the drawn structure of the major product: H H | | H-C=C-C-C-H + H-Cl --> H-C-C=C-C-H | | | H H Cl

Note that the stereocenter at the third carbon is not affected in this reaction. This transformation is an example of an addition reaction, where a molecule is added to a double or triple bond, resulting in the formation of a single bond.

The reaction is a hydrohalogenation, and the transformation results in breaking the triple bond and forming a new single bond between the carbon and the chlorine atom.

This type of reaction is very important in organic chemistry, as it allows for the synthesis of a wide variety of compounds.

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Answer + Explanations

Calculate heat absorption using the formula:

Q = mc∆T

Q means the heat absorbed, m is the mass of the substance absorbing heat, c is the specific heat capacity and ∆T is the change in temperature.

The heat absorbed is calculated by using the specific heat of water and the equation ΔH=cp×m×ΔT. 4. Water is vaporized to steam at 100oC. The heat absorbed is calculated by multiplying the moles of water by the molar heat of vaporization.

You can do this easily: just multiply the heat capacity of the substance you're heating by the mass of the substance and the change in temperature to find the heat absorbed.

To calculate the amount of heat released in a chemical reaction, use the equation Q = mc ΔT, where Q is the heat energy transferred (in joules), m is the mass of the liquid being heated (in kilograms), c is the specific heat capacity of the liquid (joule per kilogram degrees Celsius), and ΔT is the change in ...

Q = mc∆T. Q = heat energy (Joules, J) m = mass of a substance (kg) c = specific heat (units J/kg∙K) ∆ is a symbol meaning "the change in"

Precisely, water has to absorb 4,184 Joules of heat (1 calorie) for the temperature of one kilogram of water to increase 1°C. For comparison sake, it only takes 385 Joules of heat to raise 1 kilogram of copper 1°C.

A reaction that absorbs heat is endothermic. Its enthalpy will be positive, and it will cool down its surroundings. This reaction is exothermic (negative enthalpy, release of heat).

Quantitative experiments show that 4.18 Joules of heat energy are required to raise the temperature of 1g of water by 1°C. Thus, a liter (1000g) of water that increased from 24 to 25°C has absorbed 4.18 J/g°C x 1000g x 1°C or 4180 Joules of energy.

Answer:

Due to the accumulation of static charges/due to static electricity

The compound's mole ratio in a laboratory setup is 3125.12 g/mol, according to the statement.

Water that is completely free of ions is said to be pure. This could conduct electricity as a result. The inclusion of ions in the mixture allows the solution to carry an electric current when other substances, such as ionic compounds, are dissolved in water.

Osmotic pressure is given by;

π = C * R * T

∵ 760 mmHg = 1 atm

10.3 mmHg = 1 * 12.2/760 atm

= 0.016 atm

π = no. of moles * R * T/volume (L)

π = Weight (g) * R * T / Molar mass * V (L)

0.016 atm = 2.494 * 0.082 L atm K⁻¹ mol⁻¹ * 298 K/ M.W * 195 * 10⁻³

M.W = 3125.12 g/mol

Consequently, the compound's molar mass is 3125.12 g/mol.

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Answer:

5.256e+6

Explanation:

Large particles usually get smaller as a result of surface reactions. Both heating and freezing effects of tiny particles on the climate are seen.

Weathering can be classified as either physical or chemical. There is a wide variety in soil particle size due to variations in weathering processes.The overall surface area increases when the size is reduced more. This is significant since most chemical changes start at an object's surface.

The Earth's materials are the four major elements that make up the earth's crust. The earth is made up of minerals, rocks, soil, and water. Earth materials include the necessary building components for life, agriculture, and industry.

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Considerando la definición de molaridad, la molaridad de una solución acuosa de ácido sulfúrico (H₂SO₄) es 0.5 \(\frac{moles}{litro}\).

La molaridad es una medida de la concentración de un soluto en una disolución que se define como el número de moles de soluto que están disueltos en un determinado volumen.

La molaridad de una solución se calcula dividiendo los moles del soluto por el volumen de la solución:

\(Molaridad=\frac{numero de moles de soluto}{volumen}\)

La Molaridad se expresa en las unidades \(\frac{moles}{litro}\).

En este caso, sabes que una solución acuosa se preparó al mezclar 4 moles del ácido con suficiente agua hasta completar 8 litros de solución. Entonces, sabes que:

Reemplazando en la definición de molaridad:

\(Molaridad=\frac{4 moles}{8 litros}\)

Resolviendo:

Molaridad= 0.5 \(\frac{moles}{litro}\)

Finalmente, la molaridad de una solución acuosa de ácido sulfúrico (H₂SO₄) es 0.5 \(\frac{moles}{litro}\).

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To find the empirical formula of the titanium chloride, we need to use the given information to determine the moles of titanium and chlorine in the original compound, and then use those values to find the simplest whole-number ratio of atoms in the empirical formula.

First, we can find the moles of titanium in the original compound using the mass of the titanium metal produced:

mass of titanium metal = 0.819 g

molar mass of titanium = 47.867 g/mol

moles of titanium = mass of titanium metal / molar mass of titanium

moles of titanium = 0.819 g / 47.867 g/mol

moles of titanium = 0.0171 mol

Next, we can use the law of conservation of mass to find the moles of chlorine in the original compound:

moles of chlorine = moles of titanium

Now we can find the mass of chlorine in the original compound using the moles of chlorine and the molar mass of chlorine:

moles of chlorine = 0.0171 mol

molar mass of chlorine = 35.453 g/mol

mass of chlorine = moles of chlorine x molar mass of chlorine

mass of chlorine = 0.0171 mol x 35.453 g/mol

mass of chlorine = 0.606 g

Finally, we can use the masses of titanium and chlorine to find the empirical formula of the titanium chloride. The empirical formula gives the simplest whole-number ratio of atoms in a compound, so we need to divide the masses of each element by their respective atomic masses to get the number of moles of each element:

moles of titanium = 0.0171 mol

moles of chlorine = 0.606 g / 35.453 g/mol = 0.0171 mol

The ratio of titanium to chlorine is 1:1, so the empirical formula of the titanium chloride is TiCl₁, or simply TiCl.

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This problem states polybutadiene as a polymer from which we have to draw three monomeric units, showing the rest of it with a general notation (R).

In this case, we need to consider that the monomeric unit in polybutadiene is 1,3-butadiene:

\(CH_2=CH-CH=CH_2\)

And takes the polymeric notation as:

\(-(CH_2=CH-CH=CH_2)_n-\)

Thus, since we need three monomeric units, we bind them as shown on the attached picture, which shows the 1st, 2nd and 3rd ones. Moreover, note the two R's, which stand for the rest of the polymer as a general notation.

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Answer: 6.45 Joules

Explanation: I just did it

Answer: Your answer is a Sea breeze

A sea breeze, much like the majority of weather conditions experienced at the coast, is the result of the contrasting way in which the land and ocean react to changes in temperature

Hope this helps!

Answer:

A sea breeze,

Explanation:

also known as an onshore breeze, occurs because of the differences in air pressure created by the difference in temperature between the ocean or water and the dry land.

Answer:

it wont let me leave I didnt mean to click sorry

Answer:

I believe it's copper

Explanation:

The reasoning being that Copper = 9.0 g/cm and the mystery item has 5.0 cm so 9*5 = 45 something like that