period 6, group 12 (2B)

Answer:300k=3L

             700k=x

cross multiply

300x=2100; x=7L

Explanation:

Answer:

7L

Explanation:

Answer

b. It produces carbon dioxide when burned in pure oxygen.

Explanation

The reaction between diamond and oxygen, producing carbon dioxide is not a physical property of diamond, it is a chemical property because breaking and synthesis of chemical bonds occur.

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

Answer:

B I think

Explanation:

Answer:

C) 6 protons, 6 electrons, and 7 neutrons.

Explanation:

The number of protons in an atom is called the atomic number, and it is unique to each element. Since carbon has an atomic number of 6, every atom of carbon will have 6 protons.

Carbon-13 is a variant of carbon that has an additional 7 neutrons in its nucleus, but the number of protons and electrons remains the same as any other atom of carbon. Therefore, an atom of Carbon-13 will have 6 protons, 6 electrons, and 7 neutrons.

5 g of acetic acid are present in 100 g of solution, or 5% acetic, implies.

5 g is the mass of acetic acid.

Acetic acid's molar mass is 60 g/mol.

Mass divided by molar mass yields acetic acid moles.

= 5 / 60

= 0.0833

Acetic acid's molarity is equal to moles per volume.

= 0.0833 / 30 x 10^-3

= 2.78 M

0.005 moles of NaOH are equal to 10 x 0.5 / 1000.

NaOH + CH3COOH —————————-> CH3COONa + Water

0.0833       0.005                                                0 -  ———————-> initial

After reaction,

0.0783              0                                                0.005

pH is calculated as [CH3COONa/CH3COOH] log pKa.

pH = 4.74 + log (0.005 / 0.0783)

pH = 3.54

A buffer is a substance that can withstand a pH change when acidic or basic substances are added. Small additions of acid or base can be neutralized by it, keeping the pH of the solution largely constant. This is crucial for procedures and/or reactions that call for particular and stable pH ranges.

To know more about buffer solution, click on the link below:

https://brainly.com/question/22390063

#SPJ4

Answer:

Decrease the temperature in the system

Answer:

Để trung hoà 50 ml hỗn hợp X gồm HCl và H2SO4 cần dùng 20 ml dung dịch NaOH 0,3M. Cô cạn dung dịch sau khi trung hoà thu được 0,381 gam muối khan. a) Xác định nồng độ mol của các axit trong X. b) Tính pH của dung dịch X.

Answer:

people or scientist tend to observe the nature of the continents that described by jigsaw fit,geological similarity among the continents

Answer:

B: +3

Explanation:

If Gallium loses 3 electrons, it will become an ion.

The ion will be positively charged because in this new ion, the number of electrons is lesser than the number of protons. The charge difference will impart a positive net charge on the ion.

If Gallium the loss of 3 electrons offsets the charge balance in the chemical specie. Thus, the ion will have a net +3 charge.

The density of the balls, given the masses and volume of each balls did not change

To Know if there is a change or not, we shall determine the density of both lead balls. Details below:

For the small ball

Density = mass / volume

Density of small ball = 1017 / 90

Density of small ball = 11.3 g/cm³

For the larger ball

Density = mass / volume

Density of larger ball = 2825 / 250

Density of larger ball = 11.3 g/cm³

From the above calculations, we obtained:

Thus, we can conclude that the density of the lead balls did not change

Learn more about density:

https://brainly.com/question/952755

#SPJ1

The mass of 60 mL of oil is 54 g.The required answer is 54 g.

correct option is B

The given density of oil is 0.90 g/mL. Also, given that the volume of oil is 60 mL. We are required to find out the mass of 60 mL of oil, given that the density of oil is 0.90 g/mL.The density of an object is defined as the amount of mass present per unit volume of the object.

The formula to calculate the mass of an object, given its volume and density is as follows: Mass = Density × Volume Substituting the given values in the above formula, we get:Mass = 0.90 g/mL × 60 mL= 54 g.

correct option is B

for more such questions on  mass

https://brainly.com/question/24191825

#SPJ8

The specific kind of product that is formed in the reduction of the ketone is the alcohol functional group.

When ketone reacts with the silver oxide it forms the alcoholic group and a silver mirror white precipitate which indicated the reduction of ketones.

With other like lithium aluminum hydride or sodium Bromo hydride it gets also reduced to form the product alcohol.

Therefore, a specific kind of product that is formed in the reduction of the ketone is the alcohol functional group.

Learn more about the reduction of ketones, here:

https://brainly.com/question/24065591

#SPJ4

Answer: The mass density is 1166.36 \(kg/m^{3}\).

Explanation:

Given: Weight of sample in air \((F_{air})\) = 500 N

Weight of sample in alcohol \((F_{alc})\) = 200 N

Specific gravity = 0.7 = \(0.7 \times 1000 = 700 kg/m^{3}\)

Formula used to calculate Buoyant force is as follows.

\(F_{B} = F_{air} - F_{alc}\\= 500 - 200 \\= 300 N\)

Hence, volume of the material is calculated as follows.

\(V = \frac{F_{B}}{\rho \times g}\)

where,

\(F_{B}\) = Buoyant force

\(\rho\) = specific gravity

g = acceleration due to gravity = 9.81

Substitute the values into above formula.

\(V = \frac{F_{B}}{\rho \times g}\\= \frac{300}{700 \times 9.81}\\= \frac{300}{6867}\\= 0.0437 m^{3}\)

Now, mass of the material is calculated as follows.

\(mass = \frac{F_{air}}{g}\\= \frac{500 N}{9.81}\\= 50.97 kg\)

Therefore, density of the material or mass density is as follows.

\(Density = \frac{mass}{volume}\\= \frac{50.97 kg}{0.0437 m^{3}}\\= 1166.36 kg/m^{3}\)

Thus, we can conclude that the mass density is 1166.36 \(kg/m^{3}\).

The standard reaction enthalpy (ΔH°) for the given reaction is 235.8 kJ/mol.

The standard enthalpies of formation (H°f) of the associated reactants and products must be taken into account in order to get the standard reaction enthalpy (H°) for the given reaction.

The balanced equation is:

3Fe₂O₃(s) → 2Fe3O₄(s) + ½O₂(g)

The standard enthalpy of formation values for Fe2O3(s), Fe3O4(s), and O2(g) are required.

The values are:

ΔH°f(Fe₂O₃) = -824.2 kJ/mol

ΔH°f(Fe3O₄) = -1118.4 kJ/mol

ΔH°f(O₂) = 0 kJ/mol

Now, find the standard reaction enthalpy by using equation:

ΔH° = ΣnΔH°f(products) - ΣnΔH°f(reactants)

In which n is the stoichiometric coefficient of each substance.

Place the values, to get:

ΔH° = [2ΔH°f(Fe3O₄) + ½ΔH°f(O2)] - [3ΔH°f(Fe₂O₃)]

ΔH° = [2(-1118.4 kJ/mol) + ½(0 kJ/mol)] - [3(-824.2 kJ/mol)]

ΔH° = [-2236.8 kJ/mol] - [-2472.6 kJ/mol]

ΔH° = -2236.8 kJ/mol + 2472.6 kJ/mol

ΔH° = 235.8 kJ/mol

Thus, the standard reaction enthalpy (ΔH°) for the given reaction is 235.8 kJ/mol.

Learn more about enthalpy, here:

https://brainly.com/question/29998512

#SPJ1

Answer:

sry, dk

Explanation:

Answer:

603000 J

Explanation:

The following data were obtained from the question:

Energy required (Q) =...?

Mass (M) = 10000 g

Specific heat capacity (C) = 2.01 J/g°C

Overheating temperature (T2) = 121°C

Working temperature (T1) = 91°C

Change in temperature (ΔT) =.?

Change in temperature (ΔT) =T2 – T1

Change in temperature (ΔT) = 121 – 91

Change in temperature (ΔT) = 30°C

Finally, we shall determine the energe required to overheat the car as follow:

Q = MCΔT

Q = 10000 × 2.01 × 30

Q = 603000 J

Therefore, 603000 J of energy is required to overheat the car.

Answer:

212.996 or 213 approx.

hope it helps.

Molar mass of Al - 27

Molar mass of N - 14

Molar mass of O - 16

so, the molar mass of (No3)3 will be (14+16×3)3 which is equals to 186.

so, Molar mass of Al(No3)3 will be 186+27 = 213.

Answer:

\(\boxed {\boxed {\sf 212.99 \ g/mol}}\)

Explanation:

The molar mass is the mass of 1 mole of a substance. These values are found on the Periodic Table because they are equal to the atomic masses, but the units are grams per mole instead of atomic mass units.

Aluminum nitrate is made up of 3 elements: aluminum, nitrogen, and oxygen. Look up the molar masses of the individual elements.

Let's analyze the chemical formula: Al (NO₃)₃

NO₃ is in parentheses with a subscript of 3 after. This means there are 3 nitrate ions in 1 mole of aluminum nitrate. Find the molar mass of a nitrate ion, multiply by 3, then add aluminum's molar mass.

We can round to the nearest hundredth. The 3 in the thousandth place tells us to leave the 9 in the hundredth place.

The molar mass of aluminum nitrate is approximately 212.99 grams per mole.

Answer:

Tetrahedral

Explanation:

Answer:

She okeyy

Explanation:

Example 740 are the think free ofıce pH of the blood 740 blood sample iş takipte kal ❣️

Answer:

4m

Explanation:

wavelength is peak to peak and 4m is the closest

Answer:

Ar = 12

Explanation:

I think at GCSE level it's 12. It might be more specific in A-Level and further.

Answer:

atomic mass of carbon is

12.0107 u mark me as brainlist

Answer:

Apples weigh more due to the larger mass, yet same quantity. With a 1050% increase over an average grape. Multiply 150g x 7g = 15000, bow multiply 7g x 100g = 700. Both equal

Explanation:

Your average apple weighs about 150g and 250g. The average grape weighs about 7g being small, and a large 11g. That's a 1050% increase.. Disclaimer I haven't measured massxweightxheight in awhile so might be completely wrong Mass is a measure of how much force it will take to chanfe the path

Answer:

Your average apple weighs about 150g and 250g. The average grape weighs about 7g being small, and a large 11g. That's a 1050% increase.. Disclaimer I haven't measured massxweightxheight in awhile so might be completely wrong Mass is a measure of how much force it will take to chanfe the path

Explanation:

The rate increases by a factor of 4.  IF the rate of the reaction  concentration of both 1-bromo butane and sodium hydroxide were doubled

What is meant by rate of reaction?

The rate of reaction refers to the speed at which the products are formed from the reactants in a chemical reaction.The reaction rate or rate of reaction is that the speed at which a chemical reaction takes place, defined as proportional to the rise in the concentration of a product per unit time and to the decrease in the concentration of a reactant per unit time. Reaction rates can vary dramatically

Why is rate of reaction important?

The rate of a reaction is a powerful diagnostic tool. By checking out how fast products are made and what causes reactions to slow down we can develop methods to improve production. This information is important for the large scale manufacture of many chemicals including fertilizers, drugs and household cleaning items.

Learn more about rate of reaction :

brainly.com/question/25724512

#SPJ4

Answer:

13g/cm"^3

Explanation:

Density=mass/volume.

D=416.2/32

D=13.006

D= 13 g/cm^3

Answer:

A. hydrolysis reaction.

Explanation:

Chemical Reactions.

First, let's review each concept of the group of answer choices:

- hydrolysis: is a reaction in which the net reaction is an organic compound reacting with water to give either two molar equivalents of a single product or more than one product.

- redox: is a type of chemical reaction that involves a transfer of electrons between two species.

- combustion: is a reaction in which a substance reacts with oxygen gas, releasing energy in the form of light and heat.

- neutralization: is a reaction that occurs when an acid and a base react to form water and a salt and involves the combination of H+ ions and OH- ions to generate water.

The problem is asking for the reaction that removes a phosphate group from ATP, so let's see the structure of ATP with one phosphate group:

What is enclosed in the red box is the phosphate group.

The reaction that removes this phosphate group represents a rupture of the structure and based on the logic of the definitions of the given concepts, the answer would be that the reaction to remove one phosphate group from ATP is A. hydrolysis reaction. This reaction looks like this:

ATP + water (H2O) -> ADP + Pi,

where ADP is the same molecule of ATP but it has two phosphate groups and Pi is the phosphate group removed.

0.3 moles of Oxygen is excess reactant (reagent) when yield is 100% .

NO =5.6 moles

O2= 3.1 moles

2NO + O2 --> 2NO2 the chemical reaction.

the ratio of NO and O2 is 2:1

therefore for 5.6 moles of NO, 2.8 moles of Oxygen(O2) is required. So 3.1moles - 2.8 moles = 0.3 moles

The reactant in a chemical reaction that is present in a quantity that is larger than what is required to fully react with the limiting yield is known as the excess reactant. The substance(s) still present after a chemical reaction has reached equilibrium in yield are the reactant(s). Subtract the mass of excess reagent eaten from the total mass of excess reagent provided to determine the quantity of yield that is still present. Reactants in a chemical reaction are referred to as excess reagents if they are still present after the reaction is complete.

learn more about yield here:

https://brainly.com/question/25996347

#SPJ4

Answer:

mitosis

Explanation:

The true statement about the model is that the model shows how the various atoms are connected in the molecule.

A molecular model is a representation of a molecule. We know that the molecular model shows the extent to which the atoms are bonded in the compound. The model gives us an idea of the intricate atom to atom arrangement that exists in the molecule that is under study.

Now we know that the atoms that are in the models must be shown by the use of different colors. This enables us to be able to effectively and properly distinguish between the atoms of the compound as shown in the model.

The true statement about the model is that the model shows how the various atoms are connected in the molecule.

Learn more about molecular models:https://brainly.com/question/156574?

#SPJ1

Answer:

C₂H6

Explanation:

Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). Option A

A hydrocarbon is a compound that consists of only carbon and hydrogen atoms. It is important to identify the formula that represents a hydrocarbon among the given options:

A) C₂H6: This formula represents ethane, which is a hydrocarbon. Ethane consists of two carbon atoms bonded together with single bonds and six hydrogen atoms.

B) C₂H5OH: This formula represents ethanol, which is not a hydrocarbon. Ethanol contains a hydroxyl group (-OH), indicating the presence of oxygen in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.

C) C₂H5Cl: This formula represents ethyl chloride, which is not a hydrocarbon. Ethyl chloride contains a chlorine atom (Cl) in addition to carbon and hydrogen atoms. It is a haloalkane, not a hydrocarbon.

D) C₂H6O: This formula represents ethanol, which, as mentioned before, is not a hydrocarbon. Ethanol contains an oxygen atom (O) in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.

Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). It consists only of carbon and hydrogen atoms, making it a suitable representation of a hydrocarbon.

In summary, the formula C₂H6 (option A) represents a hydrocarbon, while the other options contain additional elements (oxygen or chlorine) that make them non-hydrocarbon compounds. Option A

For more such questions on hydrocarbon visit:

https://brainly.com/question/21281906

#SPJ8