Please help I need these answers

An example of heterogeneous equilibrium is:

Heterogeneous equilibrium refers to an equilibrium state in a chemical reaction where the reactants and products exist in different physical states or phases. It occurs when substances in different phases, such as solids, liquids, and gases, are involved in a chemical reaction.

Considering the given equations:

The equation I: FeO(s) + CO(g) ⇌ Fe(s) + CO₂(g) represents a heterogeneous equilibrium.

This is because the reactants and products involve different phases (solid and gas). FeO is a solid (s), CO is a gas (g), Fe is a solid (s), and CO₂ is a gas (g). The reaction involves the conversion of a solid and a gas to another solid and a gas, and the equilibrium is established between these different phases.

Learn more about heterogenous equilibrium at: https://brainly.com/question/25257772

#SPJ1

From the solubility curve, it is clear that 84 g of potassium nitrate can be dissolved in 100 g of water at 50°C.

Solubility is defined as the ability of a substance which is basically solute to form a solution with another substance. There is an extent to which a substance is soluble in a particular solvent. This is generally measured as the concentration of a solute present in a saturated solution.

The solubility mainly depends on the composition of solute and solvent ,its pH and presence of other dissolved substance. It is also dependent on temperature and pressure which is maintained.Concept of solubility is not valid for chemical reactions which are irreversible. The dependency of solubility on various factors is due to interactions between the particles, molecule or ions.

Learn more about solubility,here:

https://brainly.com/question/8591226

#SPJ1

Solution :

1 lb = 453.592 g

1 gallon = 3785 g

For every 5 gallon gasoline = 5 lb of C is found

                                              = 5 x 453.592 g of C atoms

                                              = 2267.96 g of C atoms

Assume the consumption of car = 15 miles per kg of gasoline

The amount of gasoline used per year  \($=\frac{12000}{15}$\)

                                                                   = 800 kg

In gallons = \($\frac{800}{3.785} = 211.36\text{ gallons}$\)    

5 gallons will produce = 2267.96 g of C atoms

Therefore,  

211.36 gallons will produce = \($\frac{211.36 \times 2267.96}{5}$\)

                                             = 95871.21 g

                                             = 95.87 kg

or                                           = 25.32 gallon

Answer:

3Fe + 4H₂O --> Fe3O4 + 4H2

The number of CT scans that a patient will have to undergo in order to feel mild radiation sickness would be 72 CT scans

The normal dose CT scan delivers 700 mrem.

700 mrem = 700 x \(10^{-3}\) rem

700 x \(10^{-3}\) rem is equivalent to 0.7 rem.

In order for a patient to feel mild radiation sickness, 50 rem is needed.

If 1 CT scan is equivalent to 0.7 rem, then how many CT scans will give 50 rem?

           = 50 x 1/0.7

                    = 71.429 scans

Since CT scans cannot be a fraction, we then need to approximate to the nearest whole number.

Thus, a total of 72 CT scans will be required for a patient to have a feeling of radiation sickness.

More om dimensional analysis can be found here: https://brainly.com/question/13078117

#SPJ1

Answer:A hypothesis or model is called falsifiable if it is possible to conceive of an experimental observation that disproves the idea in question.

Explanation:That is, one of the possible outcomes of the designed experiment must be an answer, that if obtained, would disprove the hypothesis.

1. To solve for the grams of H2 needed, we need to use the given ΔH value to calculate the amount of moles of N2 that reacted. From the balanced chemical equation, we know that for every 3 moles of H2 that reacts, 1 mole of N2 reacts. Therefore, we can use the mole ratio to convert the moles of N2 to moles of H2 and then use the molar mass of H2 to convert to grams.

First, we need to calculate the moles of N2 that reacted to produce 150.9kJ of heat:
ΔH = -92.40 kJ/mol N2
150.9 kJ = (1 mol N2 / -92.40 kJ) x (-150.9 kJ)
mol N2 = 1.63 mol

Using the mole ratio from the balanced chemical equation:

1 mol N2 : 3 mol H2

We can calculate the moles of H2 needed:3 mol H2 = 1 mol N2

3 mol H2 = 1.63 mol N2
mol H2 = 0.543 mol

Finally, we can convert moles of H2 to grams:

mol H2 = 0.543 mol
molar mass of H2 = 2.02 g/mol
grams of H2 = (0.543 mol) x (2.02 g/mol)
grams of H2 = 1.10 g

Therefore, 1.10 grams of H2 are needed to involve 150.9kJ of heat.

2. To solve for the moles of NH3 produced, we can use the same mole ratio from the balanced chemical equation:

1 mol N2 : 2 mol NH3

From the moles of N2 that reacted calculated in part 1, we can calculate the moles of NH3 produced:
1 mol N2 = 2 mol NH3
1 mol N2 = 1.63 mol N2
mol NH3 = (2 mol NH3 / 1 mol N2) x (1.63 mol N2)
mol NH3 = 3.26 mol

Therefore, 3.26 moles of NH3 were produced in the process.

For more questions on: moles

https://brainly.com/question/15356425

#SPJ11

A useful scientific name must have two characteristics and these include the following:

In Science, a scientific name is sometimes referred to as binomial nomenclature, binominal nomenclature, or binary nomenclature and it can be defined as a formal system that is typically used for naming species of living organisms, especially by giving each a name that is composed of two (2) main parts i.e Genus and Species.

In Science, a species simply refers to a biological classification of related organisms that look alike or have the same (similar) characteristics and they are capable of mating (breeding) with one another in a cycle (different seasons).

In this context, we can reasonably infer and logically deduce that both Genus and Species are the two (2) main characteristics which all useful scientific names must have.

Read more on species here: https://brainly.com/question/20126690

#SPJ1

KH2PO4 is a more suitable choice as a buffer because it has a greater buffering capacity due to the presence of the weak acid and its conjugate base.

KHPo4 is not considered an effective buffer compared to KH2PO4 due to its limited buffering capacity. The effectiveness of a buffer is determined by the concentration and dissociation properties of its conjugate acid-base pair.

KH2PO4 is a salt composed of the weak acid H2PO4- and its conjugate base HPO4^2-. In an aqueous solution, KH2PO4 can dissociate to release H+ ions from the H2PO4- component, which acts as a weak acid, and the HPO4^2- component can accept H+ ions, acting as a weak base. This allows KH2PO4 to effectively resist changes in pH when small amounts of acid or base are added to the solution.

On the other hand, KHPo4 consists of the strong acid H3PO4 and the weak base HPO4^2-. H3PO4 fully dissociates in water, providing a large concentration of H+ ions, making it difficult for the HPO4^2- to effectively act as a base and maintain pH stability.

Therefore, KH2PO4 is a more suitable choice as a buffer because it has a greater buffering capacity due to the presence of the weak acid and its conjugate base.

For more question on conjugate

https://brainly.com/question/14684465

#SPJ8

Answer:

protactinium-234,

Explanation:

This is what happens when thorium-234 releases a W- boson, which then decays to an electron and an electron antineutrino.

Answer:Frogs breathe through gills underwater to get oxygen and when frogs are adults they breathe through their lungs to get oxygen.

Explanation:

Two substituents are taken out of the reactant molecule in an elimination reaction to create the product.

In a one- or two-step method, two substituents are eliminated from a molecule in an organic reaction known as an elimination reaction. Atoms are eliminated as molecules and compounds during an elimination reaction. Two substituents are taken out of the reactant molecule in an elimination reaction to create the product. A metal, an acid, or a base typically catalyze elimination. E1 and E2 reactions are the two primary categories of elimination processes in organic chemistry. Both E1 and E2 processes are also known as alcohol elimination reactions and alkyl halide elimination reactions, respectively. Any organic chemical reaction known as an elimination reaction in which two atoms and groups of atoms are eliminated.

Learn more about molecule

https://brainly.com/question/21263612

#SPJ4

You would recover 36.525g of NaCl after evaporating all of the water.

To find the grams of NaCl that would be recovered after evaporating all the water, we can use the following formula:

mass = moles * molar mass

Where:

Moles = Molarity * Volume

Molarity = 0.250 M

Volume = 2500.0 mL = 2.5 L

Molar mass of NaCl = 58.44 g/mol

mass = 0.250 M * 2.5 L * 58.44 g/mol

mass = 36.525 g

Learn about evaporation here https://brainly.com/question/2013258

#SPJ1

The ΔH for the given reaction is +204.8 kJ. This indicates that the reaction is endothermic, which absorbs heat from the surroundings.

To determine the AH for the given reaction, we can use the following steps:

Write the balanced chemical equation for the reaction.

2CO(g) + 2NO(g) ⇒ 2CO₂(g) + N₂(g)

Use the given equations to write the overall reaction as a combination of the given reactions. We can do this by reversing equation (a) and multiplying equation (b) by 2 so that the reactants and products match the overall reaction.

2CO₂(g) ⇒ 2CO(g) + O₂(g) ΔH = +566.0 kJ (reversed)

2N₂(g) + 2O₂(g) ⇒ 4NO(g) ΔH = -2(180.6 kJ) = -361.2 kJ (multiplied by 2)

Overall reaction:

2CO(g) + 2NO(g) ⇒ 2CO₂(g) + N₂(g) ΔH = ?

Step 3: Add the ΔH values for the individual reactions to obtain the ΔH for the overall reaction.

ΔH = (+566.0 kJ) + (-361.2 kJ) = +204.8 kJ

Therefore,  the ΔH for the given reaction is +204.8 kJ. This indicates that the reaction is endothermic, meaning that it absorbs heat from the surroundings., meaning that it absorbs heat from the surroundings.

To know more about endothermic, visit:

https://brainly.com/question/31214950

#SPJ1

There are three kinds of plate tectonic boundaries: divergent, convergent, and transform plate boundaries.

This image shows the three main types of plate boundaries: divergent, convergent, and transform.

This image shows the three main types of plate boundaries: divergent, convergent, and transform. Image courtesy of the U.S. Geological Survey. Download image (jpg, 76 KB).

The Earth’s lithosphere, which includes the crust and upper mantle, is made up of a series of pieces, or tectonic plates, that move slowly over time.

A divergent boundary occurs when two tectonic plates move away from each other. Along these boundaries, earthquakes are common and magma (molten rock) rises from the Earth’s mantle to the surface, solidifying to create new oceanic crust. The Mid-Atlantic Ridge and Pacific Ring of Fire are two examples of divergent plate boundaries.

When two plates come together, it is known as a convergent boundary. The impact of the colliding plates can cause the edges of one or both plates to buckle up into a mountain ranges or one of the plates may bend down into a deep seafloor trench. A chain of volcanoes often forms parallel to convergent plate boundaries and powerful earthquakes are common along these boundaries.

At convergent plate boundaries, oceanic crust is often forced down into the mantle where it begins to melt. Magma rises into and through the other plate, solidifying into granite, the rock that makes up the continents. Thus, at convergent boundaries, continental crust is created and oceanic crust is destroyed.

Two plates sliding past each other forms a transform plate boundary. One of the most famous transform plate boundaries occurs at the San Andreas fault zone, which extends underwater. Natural or human-made structures that cross a transform boundary are offset—split into pieces and carried in opposite directions. Rocks that line the boundary are pulverized as the plates grind along, creating a linear fault valley or undersea canyon. Earthquakes are common along these faults. In contrast to convergent and divergent boundaries, crust is cracked and broken at transform margins, but is not created or destroyed.

The order of reaction is defined as the power to which the concentration of the reactants are raised in the rate equation of the reaction.

For such more question on concentration

https://brainly.com/question/17206790

#SPJ8

The ratio of coefficients when the chemical equation Al + HCl ->AlCl₃ + H₂ is  balanced is 2:6:2:3.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

Learn more about chemical equation,here:

https://brainly.com/question/28294176

#SPJ1

The characteristics of the subatomic particles allow to find which is the correct answer:

B)  Subatomic particles don’t follow the same laws of physics as large objects.

Subatomic particles are the contributors to atoms, the main three being electrons, protons, and neutrons. The movement of these particles is described by the Schrodinger equation, the result of which is wave function.

To obtain the physical function of the wave mergers, the probability function must be constructed.

                        P = Ф* Ф

therefore the movement of the subatomic particulars is probabilistic at all times, when a large number of them join the mean value of this probability closer to the macroscopic movement.

Let's examine the claims.

A) False. The macroscopic motion of objects is the mean value of the microscopic motion, which with increasing size is deterministic and predictable.

B) True. Subatomic particles follow the rules of the Schrodinger equation and macroscopically Newton's second law.   Inconsequently they use different laws or to describe

C) False the most important force is electrostatic.

D) false. Large particles can be measured with a ruler, but sublimation that are orders of magnitude smaller require instruments of great pressure and complexity.

In conclusion using the characteristics of the subatomic particle we can find what the correct answer is;  

B)  Subatomic particles don’t follow the same laws of physics as large objects.

Learn more about subatomic particles here:  brainly.com/question/3176193

There are numerous ways to determine whether lead is present in an ore. Atomic absorption spectroscopy is a popular approach. With this method, an ore sample is dissolved in acid and then atomized in a flame or plasma.

The sample's atoms will absorb light at particular wavelengths that are peculiar to the element under investigation. The amount of light absorbed can be used to calculate how much lead is present in the sample. Inductively coupled plasma mass spectrometry and X-ray fluorescence spectroscopy are further techniques. It is crucial to remember that these procedures call for specialized tools and training, thus they ought to only be carried out in a lab by qualified experts.

To know more about spectrometry, here

brainly.com/question/31075363

#SPJ1

Answer: C

Explanation:

The force of gravity is proportional to the amount of mass in the system, and is inversely proportional to the separation distance between the two masses.

Adding mass to one of the objects would increase the gravitational field it produces, which in return increases the force of gravity.

Increasing the charge of one of the objects would technically add mass to the system, but it can be considered negligible. The adding of charge would cause an attraction between the two objects, but that is not the gravitational force. It is the Coulomb force.

Reducing the mass of one of the objects would decrease the gravitational field it produces, which would cause the force of gravity to decrease. This is the answer.

Moving the objects closer would cause the denominator of the force equation to decrease. A smaller denominator would cause the equality to increase, aka the gravitational force.

\(F=GMm/r^2\)

The comparison of H1 H2 and H3 tags is that:

There are a lot of  different HTML headings and they are:  H2 and H3, H4, H5, H6, etc.

The use of H1 tags is said to be the one that is often used to show all that a person will get if they click on the title. It is seen as the main keywords that will appear in a sequence to bring in one's target audience.

Therefore, The comparison of H1 H2 and H3 tags is that:

Learn more about tags from

https://brainly.com/question/26294460

#SPJ1

Answer:

The diffrence between Fe2+ and Fe3+ is the Fe2+has a pale green color and turns violet when water is added to it. While Fe3+ forms blood red when it reacts with thiocyanate ions.

Fe2+ has paramagnetic properties whereas

Fe3+ has diamagnetic properties.

Explanation:

I may not be correct.

Answer:

ok                                     ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

Answer: The answer is 78.0748064. We assume you are converting between grams Calcium Fluoride and mole.

Explanation:  Meeting ID: nine nine two, three eight six seven, zero five eight zero

D. a bond between two atoms that have equal electronegativities

Covalent bonds involve 2 atoms sharing electrons.

Covalent Bonds

There are 3 types of bonds: metallic, ionic, and covalent. Metallic bonds occur between 2 metals that exist in a "sea of electrons." Ionic bonds have high electronegativity differences and occur between a metal and a nonmetal. Finally, as stated above, covalent bonds occur when 2 atoms share their electrons. Covalent bonds usually occur between two nonmetals. However, there are 2 types of covalent bonds: polar and nonpolar.

Nonpolar Bonds

Both polar and nonpolar bonds involve the sharing of electrons; however, polar bonds share electrons unequally. This is caused by an electronegativity difference greater than 0.5. When two atoms have equal electronegativities, they share the electrons equally. This creates a nonpolar bond.  

Answer:

Stamen

Explanation:

Answer:

stamen

Explanation:

The stamen is the male reproductive organ. It consists of a pollen sac (anther) and a long supporting filament.

The male scientists did not so much regard the study due to gender bias.

Gender biases refer to the systematic ways in which individuals and society tend to favor one gender over the other. These biases can manifest in many different ways, including in the workplace, education, healthcare, and politics.

It's important to note that these biases are not limited to men and women, and they can vary depending on the culture, community, and individual. Also, these biases are not limited to one gender, both men and women can hold biases towards the other gender. Gender biases can have a significant impact on individual's life, limiting their opportunities and opportunities for development.

Learn more about gender bias:https://brainly.com/question/5319093

#SPJ1

Answer:

Less favorably than .

Less important .

Explanation:

answer

.03886 grams or 3.886 x 10^‐2 grams

steps

avogadros number

6.022×10²³ atoms of ANY ELEMENT = 1 mole

whats different for every element is the number of GRAMS or MASS

1 mole of iron is 55.847 grams

2.34 x 10²² ÷ 6.022×10²³ =

.03886 grams or

3.886 x 10^‐2 grams

Answer:

3 protons and also 3 electrons

Explanation:

z=p=e