help :(
If 4.7 moles of oxygen gas are allowed to react with 3.9 moles of iron according to the following equation:
4 Fe + 3 O2 → 2 Fe2O
How many moles of Fe2O3 can be formed?​

Answer:

The answer is lemonade.

Weaker acids are those which tend to have a higher pH from 4 to at least 6 stronger acids have low pH from 2 and below that's from 2 to 0.

Hope this helps

Hope

5.50 g of ethane, or c2h6, has 2.21E23 carbon atoms in it. Ethane is a paraffin series hydrocarbon that is colorless, odorless, and gaseous. Their chemical equation is C2H6.

Carbon can exist in a variety of forms, such as as coal, a component of the carbon dioxide molecule, or even as a component of a living thing. Carbon atoms can change their state through a variety of processes.

The nucleus of a carbon atom is made up of six protons and six neutrons, and it is encased in six electrons. According to quantum physics, that the very first two electrons must occupy the innermost atom orbital, while the wavefunctions of the following four electrons only partially fill second second conventional as well as three second fundamental orbitals.

To know more about carbon atoms visit:

https://brainly.com/question/25173768

#SPJ1

Answer:

The answer is C

Explanation:

I did it on edge

The step in any reaction sequence that determines the rate law for the overall reaction is called the rate-determining step. TRUE.

This step is also known as the slowest step in the reaction sequence. The rate law for the overall reaction is determined by the reactants and the rate-determining step. Therefore, it is important to identify the rate-determining step in order to determine the rate law for the overall reaction.
                                 True, the step in any reaction sequence that determines the rate law for the overall reaction is called the rate-determining step. This step has the slowest rate among all the steps in the reaction sequence and thus governs the overall rate of the reaction.

Learn more about reaction sequence

brainly.com/question/29607707

#SPJ11

Explanation:

Carbohydrates provide 4 calories per gram, protein provides 4 calories per gram, and fat provides 9 calories per gram.

Ref www.nal.usda.gov

Answer:

4- radioactive isotopes

Explanation:

I don't remember exactly but this question was on the regents

Uranium-238  is a non- fissile element. It is a radioactive isotope that can be best used to determine geological formations. Thus, option 4 is correct.

Radioactive isotopes are elements that have an unstable atomic nucleus and can undergo radioactive decay to produce new particles and energy. They have the same atomic number as that of their parent species.

Isobars are a substance that has atomic mass and do not include uranium. Nuclear fusion and fission are the processes of nuclear energy that combine or splits the unstable nucleus to form a new particle.

Therefore, option 4. Uranium-238 is a radioactive isotope.

Learn more about radioactive isotopes here:

https://brainly.com/question/863053

#SPJ2

According to the equation, it is necessary 3 moles of H2 to react with 1 mol of N2.

In this case, if we have 3 moles of H2 and 2 moles of N2, the limiting reactant will be the hydrogen (H2).

When carbonic acid decomposes, water and carbon dioxide are formed. The balanced chemical equation for the reaction can be represented as follows:Carbonic acid is a weak inorganic acid that forms when carbon dioxide is dissolved in water.

Carbonic acid is also present in fizzy drinks and soda water. When carbonic acid decomposes, water and carbon dioxide are formed.The balanced chemical equation for the decomposition reaction of carbonic acid can be represented as:H2CO3 → H2O + CO2The above reaction is an example of a decomposition reaction, which means that a single compound breaks down into two or more simpler substances.

Here, carbonic acid, which is a compound, breaks down into water and carbon dioxide gas.Balancing chemical equations is an important concept in chemistry that is used to describe chemical reactions. It involves the use of coefficients to balance the number of atoms of each element on both sides of the equation. The coefficients are the smallest possible integers that ensure that the law of conservation of mass is obeyed.

learn more about carbonic acid

https://brainly.com/question/27945587

#SPJ11

The proton motive force drives the production of ATP by providing the energy needed to power ATP synthase. This process is essential for cell metabolism and the production of energy in living organisms.

The proton motive force is a gradient of hydrogen ions created across the inner mitochondrial membrane by the activity of electron transport chains and ATP synthases. ATP is synthesized by ATP synthase, which harnesses energy from this gradient to generate ATP from ADP and inorganic phosphate. The process of ATP synthesis is coupled to the transport of protons from the intermembrane space into the mitochondrial matrix. This process is accomplished by the flow of protons across the ATP synthase enzyme. During cellular respiration, hydrogen ions are pumped from the mitochondrial matrix into the intermembrane space, creating a gradient of protons across the inner mitochondrial membrane. This creates a proton motive force, which provides the energy needed to power ATP synthase. As the protons flow down the gradient, they pass through the ATP synthase enzyme, which couples the energy released by the flow of protons to the synthesis of ATP. The energy released by the flow of protons is used to drive the rotation of the rotor in the ATP synthase enzyme. This rotation causes a conformational change in the enzyme, which exposes binding sites for ADP and inorganic phosphate. These molecules then bind to the enzyme and are used to synthesize ATP from ADP and inorganic phosphate. Overall, the proton motive force drives the production of ATP by providing the energy needed to power ATP synthase. This process is essential for cell metabolism and the production of energy in living organisms.

For more question on energy

https://brainly.com/question/5650115

#SPJ8

Bases that are useful for deprotonating compounds are:

NaHCO₃ or NaOH.

metal alkoxide

Sodium hydroxide

Benzene rings with carboxylic acids that are weak acids can be prepared using NaOH or NaHCO 3 due to the weakness of the carboxylic acid. deprotonated.

Metal alkoxides such as potassium tert-butoxide can be used to deprotonate benzene rings with three carbon chains attached to one carbon. Also, metal alkoxides are used because the benzene ring containing the hydroxyl group is a very weak acid.

A benzene ring with a hydroxyl group is a weak acid like a benzene ring with a carboxyl group, so it can be deprotonated with NaOH.

learn more about deprotonation here: https://brainly.com/question/28525778

#SPJ4

Answer: C. Gaining 5 electrons

Explanation: Aluminium has 3 valence electrons to have a full outer shell it would need 5 to become an octet (8).

The carbon dioxide produced by the animals in the closed chamber is absorbed by the soda lime in the respirometer-manometer system, preventing its accumulation and allowing the observation of oxygen consumption.

When using a respirometer-manometer to observe the amount of oxygen being used by animals in a closed chamber, the carbon dioxide produced by the animals is typically absorbed by a substance called soda lime. Soda lime is a mixture of calcium hydroxide (Ca(OH)2) and sodium hydroxide (NaOH), which has a high affinity for carbon dioxide.

As the animals respire and produce carbon dioxide, the gas passes through the respirometer-manometer system. Inside the chamber, the carbon dioxide comes into contact with the soda lime. The soda lime absorbs the carbon dioxide through a chemical reaction, forming calcium carbonate (CaCO3) and sodium carbonate (Na2CO3) as byproducts.

This absorption of carbon dioxide by the soda lime ensures that it does not accumulate within the closed chamber. The respirometer-manometer system measures the decrease in volume of the gas mixture inside the chamber due to the consumption of oxygen by the animals.

Learn more about respirometer-manometer from ;

https://brainly.com/question/33958142

#SPJ11

The statement "Cis refers to Z configuration" is True.

In chemistry, the letter "Z" is frequently used as a image to represent the atomic wide variety. The atomic number of an detail shows the range of protons located within the nucleus of an atom. Each element has a completely unique atomic wide variety, which determines its function at the periodic table and distinguishes it from other elements. For instance, hydrogen has an atomic number of one, indicating it has one proton, while oxygen has an atomic quantity of 8, representing eight protons in its nucleus. The atomic quantity plays a essential function in figuring out the chemical properties and conduct of factors. It affects the element's electron configuration, bonding capabilities, and universal reactivity. By know-how the atomic quantity, scientists can are expecting how factors will have interaction with different materials and the way they will form compounds. Therefore, the letter "Z" is generally used as a shorthand notation to symbolize the atomic quantity in chemical equations, formulation, and discussions in the field of chemistry..

Read more about Cis at:

https://brainly.com/question/23824844

Cis refers to the "Z" configuration. Thus, the statement is true.

In organic chemistry, the term "cis" is used to describe the "Z" configuration. In the context of a double bond, "cis" signifies that the substituent groups are positioned on the same side of the double bond, while "trans" indicates that they are on opposite sides.

Similarly, in a cyclic structure, "cis" denotes that the substituent groups are located on the same face of the ring, whereas "trans" signifies that they are on opposite faces.

The "Z" configuration specifically represents the cis configuration, and it is a notation employed to indicate this arrangement in organic chemistry. On the other hand, the "E" configuration is used to represent the trans configuration.

Read more about cis configuration:

brainly.com/question/30322766

The correct question is:-

State whether the statement "cis refers to 'Z' configuration" is true or false.

Answer:

the answer would be B. hope this helps!

Explanation:

Alkali Earth metals do not have a set number of valence electrons. Hence, option B is correct.

Alkali metals are metals of group 1. These metals are known to react with water to form the corresponding alkali and liberate hydrogen gas.

In alkaline earth, metals have two valence electrons which mean there are two free electrons in the outer shell of alkaline earth metals which are free to interact.

Hence, option B is correct.

Learn more about alkali metals here:

https://brainly.com/question/18153051

#SPJ5

The volume of HCl gas required to react with excess magnesium metal to produce 6.82 L of hydrogen gas at 2.19 atm and 35.0 °C is 4.32 L.

Magnesium is a chemical element with symbol Mg and atomic number 12. It is a silvery-white, highly reactive metal and is the eighth most abundant element in Earth’s crust. Magnesium is an important component of proteins, nucleic acids, enzymes, and many other vital biological compounds.

The ideal gas law, PV=nRT, can be used to calculate the volume of HCl gas required to react with excess magnesium metal to produce 6.82 L of hydrogen gas at 2.19 atm and 35.0 °C.
First, the number of moles of hydrogen gas can be calculated using the ideal gas law:

n = PV/RT = (2.19 atm)(6.82 L)/[(0.082 L atm/mol K)(308.15 K)] = 0.077 mol

Next, the number of moles of HCl required to produce 0.077 mol of hydrogen can be calculated using the mole ratio of the balanced equation:

2 mol HCl : 1 mol H₂

0.077 mol H₂ x (2 mol HCl/1 mol H₂) = 0.154 mol HCl

Finally, the volume of HCl gas required can be calculated using the ideal gas law:

V = nRT/P = (0.154 mol)(0.082 L atm/mol K)(308.15 K)/(2.19 atm) = 4.32 L

Therefore, the volume of HCl gas required to react with excess magnesium metal to produce 6.82 L of hydrogen gas at 2.19 atm and 35.0 °C is 4.32 L.

To learn more about magnesium

https://brainly.com/question/30333465

#SPJ4

The factors that influence the intensity of an IR absorption band are: Concentration of the sample, Path length of the sample, Polarization of the radiation, temperature, Molecular dipole moment, Molecular weight.

Concentration of the sample: An increase in the concentration of the sample leads to an increase in the intensity of an IR absorption band.

Path length of the sample: The intensity of an IR absorption band is directly proportional to the path length of the sample.

Temperature: The intensity of an IR absorption band decreases with an increase in temperature. This is because the molecular vibrations decrease at higher temperatures.

Polarization of the radiation: The intensity of an IR absorption band depends on the polarization of the radiation. When the polarization of the radiation is perpendicular to the vibrational dipole moment of the molecule, the intensity is low. But, when the polarization is parallel to the vibrational dipole moment, the intensity is high.

Molecular dipole moment: The intensity of an IR absorption band is directly proportional to the molecular dipole moment of the molecule. This is because the change in dipole moment during the vibration is directly proportional to the intensity of the absorption band.

Molecular weight: The intensity of an IR absorption band is inversely proportional to the molecular weight of the molecule. This is because the larger the molecule, the lower the frequency of the absorption band.

Learn more about IR absorption band here:

https://brainly.com/question/31115658

#SPJ11

2.56 moles of HCl are required to react with 0.64 moles of KMnO4.

The balanced chemical equation is given as;2KMnO4 + 8HCl → 3Cl2 + 2MnO2 + 4H2O + 2KCl.This equation is balanced in such a way that 2 moles of KMnO4 reacts with 8 moles of HCl to produce 3 moles of Cl2, 2 moles of MnO2, 4 moles of H2O and 2 moles of KCl.We are given the number of moles of KMnO4 as 0.64 moles.Now, we can use stoichiometry to find the number of moles of HCl required to react with 0.64 moles of KMnO4.The balanced chemical equation shows that 8 moles of HCl reacts with 2 moles of KMnO4.

So, one mole of KMnO4 would react with 8/2 = 4 moles of HCl.Now, the number of moles of HCl required to react with 0.64 moles of KMnO4 would be;Moles of HCl = Moles of KMnO4 x (Moles of HCl / Moles of KMnO4) Moles of HCl = 0.64 x 4 = 2.56 moles of HCl.

for such more questions on moles

https://brainly.com/question/15356425

#SPJ8

When 7.5 g of sodium carbonate (Na₂CO₃) reacts with hydrochloric acid (HCl), it forms 7.45 g of sodium chloride (NaCl).

The balanced chemical equation is Na₂CO₃ + 2HCl → 2NaCl + H₂O + CO₂. From the balanced equation, we can conclude that one mole of Na₂CO₃ reacts with 2 moles of HCl to produce 2 moles of NaCl. The molar mass of Na₂CO₃ = 106 g/mol. The number of moles of Na₂CO₃ = Mass of Na₂CO₃/Molar mass of Na₂CO₃ = 7.5/106= 0.07075 mol. The number of moles of HCl used in the reaction = 0.07075 × 2 = 0.1415 mol.

From the balanced equation, the number of moles of NaCl produced = 2 × 0.07075 = 0.1415 mol. The molar mass of NaCl is 58.44 g/mol. Hence, the mass of NaCl formed= number of moles × molar mass = 0.1415 × 58.44 = 8.26 g. The answer, when rounded off to two significant figures, is 8.3 g, and the answer given in the options is 7.45 g.

Learn more about molar mass here:

https://brainly.com/question/31545539

#SPJ11

Answer:

A

An organism’s phenotype may influence its ability to find food, and also might affect the organism’s ability to reproduce and pass on favorable alleles.

B.

An organism’s phenotype may influence its ability to produce chromosomes and pass those chromosomes to future generations

C.

An organism’s phenotype may influence its ability to turn on certiain genes necessary for survival.

D.

An organism’s phenotype is not connected with the chances for a species to survive.

Explanation:

The electronegativitie of the period-3 element are lited on the tranparency.. Si and Cl  is 0.7, . Mg and S is 1.3,  Si and S is 1.7, Al and P is 1.6.

The electronegativity of the atoms that make up the bond determines whether it is nonpolar or polar covalent. An atom's propensity to draw electrons (or electron density) in its direction is measured by its electronegativity. It controls how the shared electrons between the two atoms in a bond are distributed. The more an atom's electronegativity, the more strongly the electrons in its bonds are drawn to it. In a polar covalent bond, electrons are pushed in the direction of the more electronegative atom; as a result, the atom with the partial negative charge is the more electronegative atom. The electron distribution becomes increasingly polarised and the atoms' partial charges increase with increasing electronegativity differences.

Learn more about electronegativity here:

https://brainly.com/question/29810769

#SPJ4

The process which is best described by "A" in this Venn diagram is: C. fusion of atoms.

Nuclear fusion can be defined as a type of nuclear reaction that involves joining or combining two (2) smaller nuclei of atoms, so as to form a single heavier nucleus accompanied with the release of energy.

Based on the Venn diagram in the image attached below, we can logically deduce that the process which is best described by "A" is fusion of atoms.

Read more on nuclear fusion here: https://brainly.com/question/9903602

#SPJ1

if 645. 0 mL of carbon dioxide was compressed at 1. 20 L by increasing its pressure to 7. 90 atm. The original pressure is approximately 146 atm.

To find the original pressure if 645.0 mL of carbon dioxide was compressed at 1.20 L by increasing its pressure to 7.90 atm, the ideal gas law can be used.The ideal gas law equation is PV = nRT, whereP is the pressure of the gasV is the volume of the gasn is the number of moles of gas presentR is the ideal gas constant, andT is the absolute temperature of the gas.To solve the problem, we need to use the formula to calculate the original pressure (P1). Then the ideal gas law can be rearranged as follows:P1 = nRT1/V1, where T1 is the initial temperature and n and R are constants, which means that P1 is directly proportional to T1/V1.So, for the calculation:P1 = (7.90 atm × 1.20 L) / (645.0 mL × 0.0010 L/mL) = 146 atm. Therefore, the original pressure is approximately 146 atm.

learn more about carbon

https://brainly.com/question/29846714

#SPJ11

MWF is equal to 270 , so the empirical formula will be CH₂O when a compound has a molar mass of 270 g/mol.

Option A is correct .

Empirical formula will be CH₂O

Weight of empirical formula  CH₂O = 30

weight of molecular formula = 270

                            n = MFW/ EFW

                             n = 270 / 30

                                  n = 9

MF =  [CH₂O]₉  = C₉H₁₈O₉

MWF is equal to 270 , so the empirical formula will be CH₂O

The simplest whole number ratio of the atoms in a chemical compound is its empirical formula. The empirical formula for sulfur monoxide, or SO, and the empirical formula for disulfur dioxide provide a straightforward illustration of this idea. The relative ratios of the various atoms in a compound can be determined by using an empirical formula. The proportions turn out as expected on the molar level also. As a result, H₂O consists of one oxygen atom and two hydrogen atoms.

Incomplete question :

A certain compound has a molar mass of 270 g/mol. Which is a possible empirical formula for this compound? Select one:

A. CH₂O

B. C₂H₂O₂

C.CHO

D. C₂H₂O

E.C₂HO

Learn more about empirical formula :

brainly.com/question/1603500

#SPJ4

Answer:

Lava flows are streams of molten rock that pour or ooze from an erupting vent. Lava is erupted during either nonexplosive activity or explosive lava fountains. ... But when basalt lava flows are confined within a channel or lava tube on a steep slope, the main body of the flow can reach velocities >30 km/h (19 mph).

Explanation:

Answer:

C.) The number after it is between 5 and 9

Explanation:

If the digit to the right is less than five, you must leave the digit you want to round to as it is.

But, if the digit to the right is greater than or equal to five, you must increase the value of the digit you're rounding to by one. And any remaining digits before the decimal point become zeros, and any that are after the decimal point are dropped.

Hope this helps you out! : )

Answer:

oxygen? but that's not a compound that's an element

Answer:17.5

Explanation: (0.5 meters)(35 Joules) =

When the bowler lifts the bowling ball for a distance of 0.5 m, the mass of the bowling ball used by the bowler is 17.3 kg.

The ability to do work is called Energy.

As work done and energy has the same units. The energy required is equal to the work done.

E = W = 35 J

Force acting on the ball is equal to the weight of the ball.

F = Weight =mg

where m = mass of the bowling ball and g = acceleration due to gravity

Substituting the given energy and distance moved, we have

\(35 = m\times9.81\times0.5\\ m=17.3 \:\rm kg\)

Therefore, the mass of the bowling ball is 17.3 kg.

Learn more about energy

https://brainly.com/question/1932868

#SPJ2

The spontaneity of a reaction is determined by the Gibbs free energy change (∆G), which is a measure of the system's ability to do work.

The equation that links ∆G, ∆H, and ∆S is: ∆G = ∆H - T∆S, where T is the temperature in Kelvin and ∆H and ∆S are the enthalpy and entropy changes, respectively. The signs of ∆H and ∆S determine whether the reaction is exothermic or endothermic and whether it is entropy-driven or enthalpy-driven, respectively.

If ∆G is negative, the reaction is spontaneous, meaning it occurs without the input of energy.The given reaction has a ∆H of 23.25 kJ and a ∆S of 161.26 J/mol∙K.

First, we need to convert the units of ∆S from J/mol∙K to kJ/mol∙K by dividing by 1000.∆S = 161.26 J/mol∙K ÷ 1000 = 0.16126 kJ/mol∙K Substitute the values into the equation to determine the spontaneity of the reaction:

∆G = ∆H - T∆S∆G = (23.25 kJ) - (298 K) x (0.16126 kJ/mol∙K)∆G = 23.25 kJ - 48.02 kJ∆G = -24.77 kJ Since ∆G is negative, the reaction is spontaneous.

To know more about Gibbs free energy refer here: https://brainly.com/question/13795204#

#SPJ11