what is ore of iron ​

The total mass of the products is 853.8 g.

We know that we have to apply the principles of stoichiometry so as to be able to obtain the mass of the mass of the products and then the total mass of the products that is obtained in the reaction.

We have that in the question; 496. 5 grams of lead II nitrate reacts with potassium bromide is such a way that the lead II nitrate would be completely consumed in the reaction. This means that the lead II nitrate is the limiting reactant in the reaction.

Number of moles of the lead II nitrate = 496. 5 grams /331 g/mol

= 1.5 moles

If 1 mole of  lead II nitrate produces 1 mole of lead II bromide

Mass of lead II bromide produced = 1.5 moles * 367 g/mol

= 550.5 g

If 1 mole of lead II nitrate produces 2 moles of potassium nitrate

1.5 moles of lead II nitrate produces  1.5 * 2 /1

= 3 moles of  potassium nitrate

Mass of  potassium nitrate = 3  moles * 101.1

= 303.3 g

Total mass produced = 550.5 g + 303.3 g

= 853.8 g

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Answer:

2 single, 0 double, and 1 triple

Explanation:

H-C≡C-H

The Correct representation of arrows are Arrow A :  74.6 kJ, Arrow B : Exothermic, Arrow C :  has a magnitude that is less than that of B, Arrow D : represents the overall enthalpy of reaction

Those reactions which releases energy are called as exothermic reactions.

Correct representations of arrows based on the diagram ;

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Answer:

The above answers are correct! If you want it a little more simply tho:

Arrow A: Option A

Arrow B: Option B

Arrow C: Option B

Arrow D: Option C

Explanation:

Hope this gave a little more clarification!

Have a great day :)

Brainliest would be great :D

According to the law of conservation of mass, Billy should have 12 grams after the experiment is finished.

Billy starts with 12 grams of sodium hydroxide as part of an experiment.

According to the law of conservation of mass, matter is not created not destroyed over the course of physical or chemical changes.

Thus, if he starts with 12 grams before the experiment, he must end with 12 grams after the experiment.

According to the law of conservation of mass, Billy should have 12 grams after the experiment is finished.

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Answer:

for the how to get a carrot to float you would need to make a hole in it and make it hollow

Explanation:

The vapor pressure of the solution of 1.48 m Al(NO₃)₃ at 45.0 °C is 71.93 torr.

This can be calculated using Raoult's law. The law states that the vapor pressure of a solution is inversely proportional to the mole fraction of the solvent (not the solute).

The following formula can be used to get the vapor pressure of a solution of 1.48 m Al(NO₃)₃ at 45.0 °C:

P = P° × Xsolvent

where P is the vapor pressure of the solution, Xsolvent is the solvent's molecular weight, and P° is the solvent's pure vapor pressure.

The solvent's mole fraction is equal to 1 because it is presumed that the solute has entirely broken down. In this instance, the solution's vapor pressure is the same as the pure solvent's, which is 71.93 torr at 45.0 °C.

Hence, the vapor pressure of the solution of 1.48 m Al(NO₃)₃ at 45.0 °C is 71.93 torr.

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To produce 1000 kg of fishmeal (M = 1000 kg), you would need 3000 kg of pasta. To determine the amount of pasta required to produce 1000 kg of fishmeal, we need to consider the mass balance of the process. Let's break down the steps involved:

A. Extraction of fish oil:

The pasta obtained from the extraction stage contains 20% flour and 80% water. To calculate the amount of pasta, we need to determine the mass of flour and water in the pasta. Let's assume the total mass of the pasta is P kg.

Mass of flour = 20% of P = 0.2P kg

Mass of water = 80% of P = 0.8P kg

b. Drying of pasta:

During the drying stage, the pasta is dried in a rotary drum, resulting in fishmeal with 40% humidity. This means that the final fishmeal will contain 60% dry matter.

Let's assume the mass of the dried fishmeal is M kg.

Mass of dry matter = 60% of M = 0.6M kg

Since the dry matter in the fishmeal comes from the flour in the pasta, we can equate the mass of dry matter to the mass of flour:

0.6M kg = 0.2P kg

To produce 1000 kg of fishmeal, we want to find the corresponding value of P:

0.6M = 0.2P

P = (0.6M) / 0.2

P = 3M

Therefore, to produce 1000 kg of fishmeal (M = 1000 kg), you would need 3000 kg of pasta.

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Answer:

Explanation:

NaCl – Sodium chloride

Other names: {{unbulleted list Saltb Table salt

Appearance: Colorless cubic crystals

CaS – Calcium sulfide

Other names: Calcium monosulfide

Hepar calcies Sulfurated lime

Answer:

photosynthesis

Explanation:

Answer:

Photosynthesis

Explanation:

I had it on a quiz.

The fruit basket recipe will the specialty store need to fulfill all 725 orders is 120 strawberries.

Fruit basket is defined as a gift basket filled with a variety of fruits.

A fruit basket can be called as a punnet is a compact box or square basket used for gathering, transporting, and selling fruits and vegetables, typically for small berries.

As one basket has 6 strawberries.

So, for completing 725 order we need

= 725 / 6

= 120.8 = 120 strawberries

Thus, the  fruit basket recipe will the specialty store need to fulfill all 725 orders is 120 strawberries.

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Enthalpy change of mixing refers to the energy change during the formation of an ideal solution. Volume change of mixing relates to the change in volume resulting from the mixing process.

Enthalpy is a thermodynamic property that represents the total heat content of a system at constant pressure. It encompasses both the internal energy of the system and the work done by or on the system. Enthalpy is denoted by the symbol "H" and is typically measured in units of energy, such as joules (J) or calories (cal). Enthalpy accounts for the energy transferred as heat during chemical reactions or phase changes. Enthalpy is crucial in studying and analyzing various phenomena, including chemical reactions, phase transitions, and energy transfers in thermodynamic systems.

Volume change of mixing, on the other hand, relates to the change in volume resulting from the mixing process. It accounts for the variation in molecular interactions and the resulting effects on the overall volume of the mixture compared to the volumes of the individual components.

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Answer:

# of neutrons

Explanation:

its how isotope is defined

The medication can treat people who have the disease described. According to the commercial, the drug has FDA approval to treat a condition whose symptoms are listed.

Additionally, the narrator notes that the medication only comes with a prescription and has 1% of the active substance. We can deduce from this information that the drug can effectively treat persons who have the condition generating these symptoms, but obtaining it requires a prescription. The commercial provides no support for the other possibilities.

Therefore, the correct option is D.

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The best method to determine the hydroxide ion concentration of an aqueous solution with legal ramifications would be to use titration with a standardised acid solution.

Titration with a strong acid and a reliable indicator, followed by careful calculations, is the best method to determine hydroxide ion concentration. This method provides high accuracy and precision, allowing you to confidently determine the hydroxide ion concentration in the aqueous solution.This method is highly accurate and provides precise results. It involves adding the acid solution to the solution of unknown hydroxide ion concentration until the equivalence point is reached, which is indicated by a color change in the solution. The amount of acid solution used can then be used to calculate the hydroxide ion concentration of the original solution with high accuracy and without reasonable doubt.

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Answer:

Explanation: hELLO its b

The latent heat of vaporization of boiling water is 540 cal/gm. Option b is the correct answer.

It is the amount of heat needed to convert 1 gram of water from liquid to vapor state at atmospheric pressure at a constant temperature. The latent heat of vaporization for water is relatively high compared to other liquids because of the strong hydrogen bonding between water molecules. This means that water requires a lot of energy to break these bonds and change from a liquid to a gaseous state. The latent heat of vaporization is also responsible for the cooling effect of evaporation. When sweat evaporates from our skin, it absorbs heat from our body, which helps to cool us down. In conclusion, the latent heat of vaporization of boiling water is 540 cal/gm, which represents the amount of heat required to convert 1 gram of water from liquid to vapor state at atmospheric pressure at a constant temperature.

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C) The reaction in glycolysis that involves an aldose to ketose isomerization is option  Phosphohexose isomerase. Phosphohexose isomerase catalyzes the conversion of glucose-6-phosphate (an aldose) to fructose-6-phosphate (a ketose).

The reaction in glycolysis that involves an aldose to ketose isomerization is catalyzed by phosphohexose isomerase. This enzyme converts glucose-6-phosphate, which is an aldose sugar, into fructose-6-phosphate, which is a ketose sugar.

This is a crucial step in glycolysis as it allows for the rearrangement of the sugar molecule, facilitating further downstream metabolic processes.

The isomerization reaction occurs through the shifting of functional groups within the sugar molecule, resulting in the conversion from an aldose to a ketose.

This isomerization step ensures the proper progression of glycolysis and the generation of energy in the form of ATP.

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An exothermic chemical reaction between a solid and a liquid results in gaseous products. It is a spontaneous reaction.

When a chemical reaction takes place with the release of heat, it is known as an exothermic chemical reaction. An exothermic chemical reaction is a chemical reaction that releases energy in the form of heat, light, or sound during the process. The burning of paper is an example of an exothermic chemical reaction. When paper burns, heat and light are produced, which we can feel or observe.

The reaction is spontaneous if the Gibbs free energy, delta G is negative. A reaction will be spontaneous if its delta G is negative. The reaction will proceed from left to right if delta G is negative, and it will proceed from right to left if delta G is positive. A reaction will be at equilibrium if delta G is zero.The reaction mentioned in the question is an exothermic chemical reaction because it results in the release of heat. As a result, the reaction is spontaneous. The production of gaseous products indicates that a gas is formed during the reaction. Therefore, this reaction is spontaneous.

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Total heat generated by 2 mole of TiO2(s) is 4.963kJ.

The amount of heat released in the reaction of 2.89 mol of TiO2(s) can be calculated using the following equation: q = nCΔT, where n is the number of moles, C is the specific heat capacity of TiO2, and ΔT is the change in temperature.

The specific heat capacity of TiO2 is 683. 697. J/kgK. and the change in temperature is is 25k. By plugging in the values and converting J to kJ,

q = 2.89 * 25 * 683.697

=> 4963.35

In brief, the amount of heat released by 2.89 mol of TiO2(s) is 4.963kJ.

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Complete question :

determine how much heat (in kj) of 2.89 mol of tio2(s) with a temperature difference of 25k

Answer: here is my explination hope this is relavent. and helps to your question. i love chemistry

Isocitrate dehydrogenase is not a component of the pyruvate dehydrogenase complex

Pyruvate dehydrogenase complex (PDC) is a three-enzyme complex that transforms pyruvate to acetyl-CoA via a process known as pyruvate decarboxylation. Acetyl-CoA may subsequently be utilized to carry out cellular respiration in the citric acid cycle, and this complex connects the glycolysis metabolic route to the citric acid cycle. Because it also includes pyruvate oxidation, pyruvate decarboxylation is sometimes known as the "pyruvate dehydrogenase reaction."

The complex also requires the presence of 5 different coenzymes: CoA, NAD+, FAD+, lipoic acid, and thiamine pyrophosphate (TPP).

Isocitrate dehydrogenase (IDH) is an enzyme that catalyzes isocitrate oxidative decarboxylation, resulting in alpha-ketoglutarate (-ketoglutarate) and CO2. The oxidation of isocitrate (a secondary alcohol) to oxalo-succinate (a ketone) is followed by the decarboxylation of the carboxyl group beta to the ketone, resulting in alpha-ketoglutarate.

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Answer: I dont want to make you wrong but I think its D.

The two subatomic particles that make up the nucleus of an atom are protons and neutrons. Electrons are located outside the nucleus. Protons have a positive charge, Neutrons have no charge, and Electrons have a negative charge. Hence option A is correct.

The number of protons in an atom's nucleus is called the atomic number. The atomic number determines the elements of the atom. For example, all atoms with 6 protons in their nucleus are carbon atoms.

The number of neutrons in an atom's nucleus can vary. This is why atoms of the same element can have different masses. For example, carbon atoms can have 6, 7, or 8 neutrons. These different forms of carbon are called isotopes.

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Answer:

46.943 million km

Explanation:

From an average distance of 36 million miles (58 million kilometers), Mercury is 0.4 astronomical units away from the Sun.

Answer:

29.169 million miles

Explanation:

From an average distance of 36 million miles(58 million kilometers,Mercury is 0.4 astronomical units away from the sun.

Answer:

A. can travel through empty space

Explanation:

it is said dat electro magnetic waves or radiation travels through the vacuum of space

Answer:

all of the above. Because, Y'know, electromagnetic radiation is like that.

Answer:

the gravitational attraction that exists between all bodies

Explanation:

Comet shoemaker-levy 9 was the comet that broke away and collided with the largest planet on our solar system, the Jupiter. The comet fall apart from the asteroids in the year 1992 and flew and hit Jupiter in the year 1994. This was predicted by the scientist.

Similarly when a comet can hit a planet can be accurately predicted by the scientist or the researcher by understanding and studying the gravitational forces that exists between the bodies in the solar system. It is very important to understand the gravitational attractions which exists between all the bodies in the universe in order to calculate or predict when can a comet collide with a planet.