if 2.10 mol of nitrogen monoxide gas and 2.70 mol of oxygen gas react, what is the limiting reactant?

Answer:

B

Explanation:

Chemistry is the study of matter, its composition and the changes it undergoes.

Answer:

The scientific study of matter

Explanation:

reviewed the work, its correct

In this case, the negative value of -28.6 kJ suggests that the reaction between water vapor (H2O) and carbon monoxide (CO) to form hydrogen gas (H2) and carbon dioxide (CO2) is spontaneous under the given conditions.

To calculate the ΔG°rxn for the given reaction, we need to consider the balanced chemical equation:

H2O(g) + CO(g) → H2(g) + CO2(g) ΔG°rxn = -28.6 kJ

Since the balanced equation is already provided, we can use the given ΔG°rxn value of -28.6 kJ for this reaction. The Gibbs free energy change (ΔG°rxn) is a measure of the spontaneity of a chemical reaction. A negative ΔG°rxn indicates that the reaction is spontaneous and proceeds in the forward direction, while a positive value means the reaction is non-spontaneous and favors the reverse direction.

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Answer:

C - Mass and Volume

Explanation:

Answer:

c,3

Explanation:

have a wonderful day:)

The coefficient for OH^(-)(aq) in the balanced equation is 7.

In a balanced chemical equation, the coefficients represent the relative amounts of each species involved in the reaction. To balance the given equation, H2O2(aq) + Cr2O7^2-(aq) → O2(g) + Cr3+(aq), in a basic aqueous solution, we need to account for the presence of hydroxide ions (OH^(-)(aq)).

To balance the equation in a basic solution, we follow these steps:

Step 1: Balance the atoms other than hydrogen and oxygen. In this case, we have one Cr atom on each side and two O atoms on the reactant side but three O atoms on the product side.

Cr2O7^2-(aq) + H2O2(aq) → O2(g) + 2Cr3+(aq)

Step 2: Balance the oxygen atoms by adding water (H2O) to the side that needs more oxygen. We add three H2O molecules to the left side to balance the oxygen atoms.

Cr2O7^2-(aq) + 3H2O2(aq) → O2(g) + 2Cr3+(aq)

Step 3: Balance the hydrogen atoms by adding H^+ ions to the opposite side. We add 8H^+ ions to the right side to balance the hydrogen atoms.

Cr2O7^2-(aq) + 3H2O2(aq) → O2(g) + 2Cr3+(aq) + 8H+(aq)

Step 4: Balance the charge by adding OH^(-)(aq) ions to the opposite side. We add 7OH^(-)(aq) ions to the left side to balance the charges.

Cr2O7^2-(aq) + 3H2O2(aq) + 7OH^-(aq) → O2(g) + 2Cr3+(aq) + 8H+(aq)

Therefore, the coefficient for OH^(-)(aq) in the balanced equation is 7.

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Therefore, 0.425 moles of NH4Cl are produced when 0.85 moles of NH3 react.

Moles is a unit of measurement used in chemistry to express the amount of a substance. One mole is defined as the amount of a substance that contains as many elementary entities (such as atoms, molecules, or ions) as there are atoms in exactly 12 grams of carbon-12. This number of elementary entities is called Avogadro's number. Moles allow chemists to make quantitative comparisons between substances, including the reactants and products in chemical reactions. For example, if we know the number of moles of a reactant and the stoichiometry of the reaction, we can calculate the number of moles of the products that will be formed. Molar quantities also help in comparing the masses of different substances because the molar mass (the mass of one mole) is known for each substance.

Here,

Let's start by writing the balanced chemical equation for the reaction:

4NH3 + Cl2 → N2H4 + 2NH4Cl

According to the equation, 4 moles of NH3 react to produce 2 moles of NH4Cl. This means that the mole ratio of NH3 to NH4Cl is 4:2 or 2:1.

We are given that we have 0.85 moles of NH3. Using the mole ratio, we can calculate the number of moles of NH4Cl produced:

0.85 moles NH3 × (2 moles NH4Cl / 4 moles NH3) = 0.425 moles NH4Cl

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Answer:

.336 g/mL

Explanation:

D = \(\frac{m}{v}\) =  \(\frac{6.05}{18}\) = 0.336 g/mL

Density of a substance is the ratio of its mass to the volume. the density of 18 milliliters of a liquid substance with a mass of 6.05 grams at 15 °C is 0.336 g/ml.

Density of a substance is the measure of its mass per volume of the substance. Thus how much of its particles are there in a unit volume is represented by its density.

Density of a substance is a physical quantity and it is dependent on the temperature, molecular weight and in bond type also.

Mathematically it is the ratio of mass of the substance to its volume in ml or L.

Density = mass / volume.

It can be expressed in g/ml g/l or Kg/cm³.

It is given that the mass of a liquid  substance is 6.05 g with a volume of 18 milliliters. Thus density of the liquid is calculated as follows;

Density = 6.05 g/ 18 mL  

             = 0.336 g/ml.

If the volume is converted to liters 18 mL = 0.018 L. Thus, density becomes 336 g/L.

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The correct IUPAC name for H2S (with the 2 written as a subscript) is hydrogen sulfide.

Easy ,

The volume of oxygen gas produced from the thermal decomposition of 0.500 grams of KCIO₃ is approximately 150 mL.

To find out the volume of oxygen gas produced from the thermal decomposition of 0.500 grams of KCIO₃, we use the stoichiometry of the balanced chemical equation and then apply the ideal gas law.

The balanced chemical equation provided is:

2 KCIO₃(s) → 2 KCI(s) + 3 O₂(g)

So, 2 moles of KCIO₃ yield 3 moles of oxygen gas. To calculate the moles of KCIO₃, we convert the given mass of 0.500 grams to moles.

The molar mass of KCIO₃ is 122.55 g/mol.

No.of moles of KCIO₃:

= \(\frac{mass}{ molar mass}\)

= \(\frac{0.500 g}{ 122.55 g/mol}\)

= 0.00408 moles (approx)

According to the stoichiometry of the balanced equation, 2 moles of KCIO₃ yield 3 moles of O₂. Therefore, 0.004084 moles of KCIO3 will produce

(0.004084 moles)(3 moles O₂)\((\frac{1}{2 moles KClO_{3} })\)

= 0.00612 moles of O₂.

Now we can utilize the ideal gas law to calculate the volume of the gas.

The ideal gas law equation is:

PV = nRT

Where:

P = pressure in atm

\(\frac{755 mm of Hg}{760 mm of Hg} (1 atm)\)

= 0.993 atm

V = volume in liters =?

n = moles of gas = 0.00612 moles

R = ideal gas constant = 0.0821 L·atm/(mol·K)

T = temperature in Kelvin

=(25+273) K

= 298 K

So,

(0.993 atm)V = (0.00612 moles)(0.0821 L·atm/(mol·K))(298 K)

\(V =\frac{ (0.00612 moles)(0.0821 Latm/(molK))(298 K)}{0.993 atm}\)

V = 0.150 L = 150 mL (approx)

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Answer:

the answer would be 2

Explanation:

Answer: The molarity of the K2CO3 solution is 0.625 M.

Explanation: To find the molarity of a solution, you need to know the moles of solute and the volume of the solution in liters. Here's how to solve the problem:

Calculate the moles of K2CO3 using its given mass and molar mass:

moles = mass / molar mass = 93.1 g / 136.21 g/mol = 0.682 mol

Calculate the volume of the solution in liters:

volume = 1.09 L

Calculate the molarity of the solution using the moles and volume:

molarity = moles / volume = 0.682 mol / 1.09 L = 0.625 M

Answer: A. DNA comparison, embryological evidence

Explanation:

This is because DNA comparison is a type of genetic evidence that is used in the study of evolution to show how organisms are related to one another. Embryological evidence, on the other hand, is a type of structural evidence that looks at the similarities and differences in the embryonic development of different organisms. By comparing the similarities and differences in the DNA and embryological development of different species, scientists can gain insights into how evolution has occurred over time.

Fossilized bones, as mentioned in option B, are a type of fossil evidence that can show the physical changes that have occurred in organisms over time. Unused hind limbs, as mentioned in option C, are an example of vestigial structures, which are also a type of structural evidence for evolution. Lastly, developmental patterns, as mentioned in option D, can also be a type of evidence for evolution, but they are more commonly associated with embryological evidence rather than fossil evidence.

For sale in her store, the florist ordered 72 daisies. Only one-fourth of the daisies are yellow, the rest are white. The florist was selling 54 yellow daisies.

Determine the quantity of yellow daisies the florist had to sell. We must first ascertain what proportion of the daisies are white in order to calculate how many white daisies the florist was required to sell. One-fourth of the daisies are said to be white. In order to indicate the quantity of white daisies, we can use the fraction \frac{1}{4} .\frac{1}{4} * 72= 18 .

The florist thus has 18 white daisies for sale. The remaining daisies must be yellow if \frac{1}{4} of them are white. We must take the number of white daisies out of the overall number of daisies in order to determine how many yellow daisies there are.72 - 18= 54.

54 yellow daisies were therefore available for purchase at the florist.

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Answer:A

Explanation:taking the test now

Answer:

A. rubidium chloride on edge 2020

Explanation:

i took the test and got it right

Answer

In 1932, Chadwick made a fundamental discovery in the domain of nuclear science: he proved the existence of neutrons – elementary particles devoid of any electrical charge. In contrast with the helium nuclei (alpha rays) which are charged, and therefore repelled by the considerable electrical forces present in the nuclei of heavy atoms, this new tool in atomic disintegration need not overcome any electric barrier and is capable of penetrating and splitting the nuclei of even the heaviest elements. Chadwick in this way prepared the way towards the fission of uranium 235 and towards the creation of the atomic bomb. For this epoch-making discovery he was awarded the Hughes Medal of the Royal Society in 1932, and subsequently the Nobel Prize for Physics in 1935.

Explanation:

In 1932, Chadwick made a fundamental discovery in the domain of nuclear science: he proved the existence of neutrons – elementary particles devoid of any electrical charge.

Matter undergoes both physical changes which does not alter the chemical properties and chemical changes which alters the chemical properties of the substance.

Matter exists in three main physical states which are:

The physical states of matter posses the physical properties of matter.

Also, most substances can change from one state of matter to another.

This a physical change known as change of state of matter. For example the melting of ice to form water.

However, matter can also undergo chemical changes which alters the chemical composition of that matter. For example, the rusting of iron is a chemical change.

In conclusion, matter can undergo both physical and chemical changes.

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Answer: pizza crust, Vegetables, Dairy, Meat, and Dairy

Explanation:

The pizza crust is important, not only to deliver those mouthwatering toppings to your anxiously waiting taste buds, but to provide vital nutrients from grains. Vegetables are a common and delicious topping for pizza. These toppings provide an array of nutrients and including multiple servings of vegetables in your diet every day is a necessary part of a healthy lifestyle. If you get meat on your pizza, it is an excellent source of protein. All meat is high in protein and iron, which are necessary to build muscle. Cheese is a good source of the calcium we all need for strong bones and teeth. Cheese is also a good source of protein.

A bread crust contains carbohydrate, vegetables contains vitamins, cheese contain calcium and protein, meat contain protein.

Nutrients are the substance that makes a body healthy.

Food material contain different nutrients that help in growth of the body.

In pizza, we get all type of nutrients

A bread crust contains carbohydrate which provide energy.

Vegetable contains vitamins to keep the body parts healthy.

Cheese contain calcium and protein which maintain the growth and repairing of the body.

Meat contain protein, good for muscles.

Thus, A bread crust contains carbohydrate, vegetables contains vitamins, cheese contain calcium and protein, meat contain protein.

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Answer:

0.7 g/ml. Whichever material matches that closest is the right one.

Answer:

Positively Charged

Explanation:

The is a group XVI and period 4 element of the periodic table with similar physical and chemical to that of tellurium and sulfur. Selenium exist in different allotropic forms, which have different solubility including selenate, selenite and selenium in elemental form

The Se ion in selenate has a positive charge of +6, while the selenate ion has a charge of -2

The Se ion in selenite has a charge of +4, while the selenite ion has a negative charge of -2.

The charge of Se in elemental selenium is 0.

Answer:

The hydrophobic core of the globin fold favors heme binding, but it is the proximal F8 (helix F, position 8) histidine that actually binds the heme cofactor to the protein by coordinating to the heme iron's fifth coordinate. Gaseous ligands bind to the iron's sixth coordinate at the opposite side of the heme plane.

The following formula can be used to determine the total IV intake between 7:00 and 9:00. Thus, 600 cc of IV fluid total were administered between 7:00 and 1:00.

Total IV intake is the total volume of fluid injected into a person's circulation via an intravenous (IV) line. Typically, the IV line is put into a vein in the arm or hand, and the fluid, which may contain nutrients, electrolytes, and drugs, is then given directly into the bloodstream. Tracking the overall IV intake is crucial, particularly in healthcare settings, since it ensures that patients are receiving the right amount of fluid and minerals to preserve their health. A range of medical disorders, such as dehydration, malnutrition, and some medical procedures, may require the insertion of an IV line. It is crucial to carefully monitor the total IV intake to prevent consequences like fluid overload.

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Answer:

A) acetic acid

Explanation:

Acetic acid most likely has the strongest intermolecular forces. Hence, option A is correct.

The boiling point of a substance is the point at which the vapour pressure of a liquid is equal to the surrounding pressure and water is 313k for absolute temperature and 212°F for Fahrenheit.

The intermolecular force of attraction depends on the strength or extent of Hydrogen bonding present in a substance.

Benzene and chloroform do not have hydrogen bonding being non-polar molecules.

Water has hydrogen bonding being polar.

However acetic acid being the most polar has the maximum hydrogen bonding.

Thus acetic acid has the strongest intermolecular forces of attraction.

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Answer:

Because trees give off carbon dioxide witch can cycle threw numerous energy sources.

Answer:

Gravity is your answer

Explanation:

Gravity hopes this helps

Answer:

2.43 grams are needed

Explanation:

I did the test

Hope this helps :)

The overall enthalpy change i.e ΔH for the system is -1300 kJ.

Enthalpy change in a reaction is defined as the difference in the potential energy of the products and the potential energy of the reactants.

This is represented by ΔHreaction.

The reaction of enthalpy change is given as

ΔHreaction= ΔHproducts -  ΔHreactants

where ΔHproducts is the potential energy of the products

=[(-200) + (-300)]kJ

= -500kJ

And,  ΔHreactants is the potential energy of the reactants

=800KJ

Therefore, by putting these values ΔHreaction can be calculated as

ΔHreaction

= [-500-800] KJ

=-1300 KJ

Thus, the overall enthalpy change is -1300KJ

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Answer:

Isotopes

Explanation:

Isotopes are atoms of the same element that contain an identical number of protons, but a different number of neutrons. Despite having different numbers of neutrons, isotopes of the same element have very similar physical properties.

An aqueous solution with a total volume of 1.00 L is prepared by dissolving 0.00113 mol of Ni(NO3)2 and 0.484 mol of NH3.

To analyze the solution, we need to consider the chemical reaction that occurs between Ni(NO3)2 and NH3. In aqueous solution, Ni(NO3)2 dissociates into Ni2+ ions and NO3- ions, while NH3 acts as a base and forms NH4+ ions and OH- ions. The reaction can be represented as:

Ni(NO3)2 + 6NH3 → [Ni(NH3)6]2+ + 2NO3-

Since 0.00113 mol of Ni(NO3)2 is present, it will react with an equivalent amount of NH3 to form [Ni(NH3)6]2+ ions. Therefore, the limiting reactant is Ni(NO3)2, and the amount of [Ni(NH3)6]2+ ions formed will be determined by the moles of Ni(NO3)2.

As each Ni(NO3)2 reacts with 6 moles of NH3 to form one [Ni(NH3)6]2+ ion, the number of moles of [Ni(NH3)6]2+ ions formed will be 0.00113 mol.

To calculate the concentration of [Ni(NH3)6]2+ ions in the solution, we divide the number of moles by the total volume of the solution:

Concentration = (0.00113 mol) / (1.00 L) = 0.00113 M

Therefore, the concentration of [Ni(NH3)6]2+ ions in the solution is 0.00113 M.

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Complete Question:

An aqueous solution is prepared by dissolving 0.00113 mol of Ni(NO3)2 and 0.484 mol of NH3 in a total volume of 1.00 L. Determine the molarity of each component in the solution.

One conversion factor that is not consistent with the equation is the conversion factor between grams of oxygen (O2) and grams of water (H2O). This is because oxygen is not directly involved in the production of water in the equation.

In the given equation, 4NH3 reacts with 5O2 to produce 4NO and 6H2O. The balanced equation shows the mole ratios between the reactants and products.

To convert between the different units of measurement, conversion factors are used. For example, to convert between moles and grams, the molar mass of the substance is used as a conversion factor. The conversion factor between grams of nitrogen (N2) and grams of ammonia (NH3) would be consistent with the equation, as nitrogen is a reactant that is involved in the production of ammonia. Similarly, the conversion factor between moles of nitrogen monoxide (NO) and moles of water would be consistent with the equation, as both NO and water are products of the reaction.

It is important to use the correct conversion factors to ensure that the units of measurement are consistent and that accurate calculations can be made.

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All of the statements regarding the effect of concentration and temperature on the rate of a reaction are correct. Therefore, there is no statement that is NOT correct.

When the concentration of a reactant is increased, the rate of reaction increases because there are more particles available for collisions, and therefore, more successful collisions per unit time. Similarly, when the temperature is increased, the rate of reaction increases because there are more collisions between particles, and they have more kinetic energy, which increases the chances of successful collisions.

The rate of a reaction refers to the change in the concentration of reactants or products per unit time. It is a measure of how quickly a chemical reaction is proceeding.

The rate of a reaction can be determined by measuring the change in concentration of any reactant or product over time, and it is usually expressed in units of mol/L/s or M/s. The rate of a reaction depends on various factors such as the concentration of reactants, temperature, pressure, and the presence of catalysts.

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--The given question is incomplete, the complete question is

"Which statement about the effect of concentration and temperature on the rate of a reaction is NOT correct? A) If the concentration of a reactant is increased, the rate of reaction increases because more particles have sufficient energy to react. B) If the concentration of a reactant is increased, the rate of reaction increases because more collisions between particles per second. C) If the temperature is increased , the rate of reaction increases there are more collisions between particles per second. D) If the temperature is increased , the rate of reaction increases because more particles have sufficient energy to react."--

The chocolate chips that are in one mole of chocolate chips is 6.02214 × 10²³ chips.

The mole of a substance is defined as the amount of substance that is my are up of 6.02214 × 10²³ particles and this number is called the Avogadro's number.

This means that 1 mole of substance= 6.02214 × 10²³ of particles that makes up the substance.

The Avogadro's number is a constant used for all substances such as the chocolate chips.

That is to say, one mole of the chocolate chips has a mass of 0.324 g but contains 6.02214 × 10²³ particles of chocolate chips.

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The number of chocolate chips that are included inside one mole of chocolate chips is equal to 6.02214 ×10^23 chips.

The quantity of a material that may be made up of 6.02214 ×10^23 particles is referred to as a mole, and this number is known as Avogadro's number. The mole is the unit of measure used to describe this quantity.

This indicates that there are 6,02214×10^23 particles in one mole of the material, which implies that one mole of the substance is equal to one mole.

Avogadro's number is a constant that is applied to many different kinds of things, including chocolate chips.

In other words, one mole of chocolate chips has a mass of 0.324 g, yet it includes 6.02214 ×10^23 individual chocolate chip particles.

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