FILL INTHE BLANK when studying the kinetics of a chemical reaction, the reaction orders for a rate law are determined experimentally by varying the concentration of ______and observing the effect on rate. the rate is determined from the ____the concentration vs. time curve for the reaction.

Answer:

false

Explanation:

cozz you'll need it inorder to find the correct mole ratio

Answer:

C.

Explanation:

In C.) Tyler is not suggesting that one race is better than another he is only suggesting his own non biased opinion on what courses should be taught at his school.

Answer:

Explanation:

C

Answer:

an alcohol is a Hydroxyl group due to the OH~ that is associated with it's molecules

The functional group found in an alcohol is Hydroxyl . Therefore, the correct option is option D.

A functional group in organic chemistry is a substituent and moiety inside a molecule that triggers the molecule's distinctive chemical processes. No matter how the rest of a molecule is made up, the very same functional group would experience the same or a similar set of chemical events.

This permits the design of synthetic chemistry as well as the methodical forecasting of chemical reactions as well as the behaviour of chemical molecules. Other functional groups close by can affect a functional group's reactivity. Retrosynthetic analysis can be used to design organic synthesis by using functional group interconversion. The functional group found in an alcohol is Hydroxyl .

Therefore, the correct option is option D.

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The oxygen atom has no formal charge.

The total of its valence and inner shell electron counts equals 8, which is the atomic number of the substance.

Subtract the total number of valence electrons from the total number of non-bonding electrons and half the total number of bound electrons to determine the formal charge of an atom.

More potent oxidants than ozone, oxygen atoms cause chemiluminescence with a variety of analytes. However, this reagent's analytical use is very constrained.

The arrangement of atoms within molecules is referred to as chemical structure. The atoms of the molecule are shown in the Kekulé Formula or structural formula in the sequence in which they are bonded.

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The equilibrium constant (Kc) for the given reaction is approximately 16.448. The value of Kc indicates the relative concentrations of reactants and products at equilibrium. In this case, a Kc greater than 1 suggests that the products (H2 and P4) are favored at equilibrium, indicating that the forward reaction is more favorable.

To determine the equilibrium constant (Kc) for the given reaction:

4PH3(g) ↔ 6H2(g) + P4(g)

We can write the equilibrium constant expression based on the stoichiometric coefficients:

Kc = ([H2]^6 * [P4]) / ([PH3]^4)

Substituting the given equilibrium concentrations:

[PH3] = 0.250 M

[H2] = 0.580 M

[P4] = 0.750 M

We can plug in these values into the equilibrium constant expression:

Kc = ([0.580]^6 * [0.750]) / ([0.250]^4)

Kc = (0.0860128 * 0.750) / (0.00390625)

Kc = 16.448

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Transient stage is also called the unstable stage and in this stage, there is a gradual decrease in deformation rate to a definite constant value.

A transient state is when a process variable or variables changes, but before the system reaches a steady state.

Transient time is the time it takes for a circuit to change from one steady state to the next.

Therefore, Transient stage is also called the unstable stage and in this stage, there is a gradual decrease in deformation rate to a definite constant value.

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Answer:

The specific heat capacity of the metal is 0.843J/g°C

Explanation:

Hello,

To determine the specific heat capacity of the metal, we have to work on the principle of heat loss by the metal is equals to heat gained by the water.

Heat gained by the metal = heat loss by water + calorimeter

Data,

Mass of metal (M1) = 512g

Mass of water (M2) = 325g

Initial temperature of the metal (T1) = 15°C

Initial temperature of water (T2) = 98°C

Final temperature of the mixture (T3) = 78°C

Specific heat capacity of metal (C1) = ?

Specific heat capacity of water (C2) = 4.184J/g°C

Heat loss = heat gain

M2C2(T2 - T3) = M1C1(T3 - T1)

325 × 4.184 × (98 - 78) = 512 × C1 × (78 - 15)

1359.8 × 20 = 512C1 × 63

27196 = 32256C1

C1 = 27196 / 32256

C1 = 0.843J/g°C

The specific heat capacity of the metal is 0.843J/g°C

Answer:

I think its 1.2 cause I divided 15.5 with 12 and got 1.2 as an answer

The empirical formula of the compound is CH₂O.

The empirical formula of a compound is the simplest formula of a compound showing the elements in the compound combined in their simplest mole ratios.

The empirical formula is determined from the simplest whole number mole ratio in which the elements in the compound combine.

The empirical formula of the compound is calculated below as follows:

mole of carbon = 0.250

mole of hydrogen = 0.50

moles of oxygen = 0.250

Diving by the smallest ratio to convert to whole number ratios

mole ratio of carbon to hydrogen to oxygen will be:

C = 0.25 / 0.25 = 1

H = 0.50 / 0.25 = 2

O = 0.25 / 0.25 = 1

Empirical formula = CH₂O

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Answer:

In thermodynamics, the triple point of a substance is the temperature and pressure at which the three phases of that substance coexist in thermodynamic equilibrium. It is that temperatureand pressure at which the sublimation curve, fusion curve and vaporisation curve meet.

Answer:

At the triple point, all three phases (solid, liquid, and gas) are in equilibrium. Since the triple point is a point, there is only one temperature and one pressure where the three phases will exist. This fact often helps in identifying compounds or in problem solving.

Answer:

True

Explanation:

The molarity of the Ca(NO3)2 solution would be 0.005 M

First, let us look at the balanced equation of the reaction:

\(2HNO_3+Ca(OH)_2 ---> Ca(NO_3)_2+2H_2O\)

The mole ratio of HNO3 to Ca(OH)2 is 2:1.

Mole of HNO3 = molarity x volume

                            = 0.2 x 150/1000

                              = 0.03 mole

Mole of Ca(OH)2 = 0.01 x 150/1000

                             = 0.0015

Thus, there is no limiting or excess reactant.

Also from the equation, mole ratio of Ca(OH)2 to Ca(NO3)2 is 1:1. Hence, the mole of Ca(NO3)2 would also be 0.0015 mole.

The total volume of the resulting solution would be: 150 +150 = 300 mL

Thus, the molarity of the resulting Ca(NO3)2 would be:

Molarity = mole/volume

              = 0.0015/0.3

               = 0.005 M

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Sí, es posible sustituir metales por otros materiales que no sean metálicos. Con este objetivo es necesario analizar las propiedades de los materiales que serán reemplazados.

Un material metálico es aquel cuya composición predomina un metal (por ejemplo, oro, plata, cobre, etc).

Para reemplazar materiales metálicos por no metálicos es requerido realizar un exhaustivo análisis de las características y/o propiedades de ambos materiales.

Este tipo de estudio permitirá obtener materiales que tengan características similares al material metálico que será reemplazado.

Por ejemplo, las cañerías metálicas pueden ser reemplazadas por materiales similares al plástico como PVC.

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Answer:

\(\mathbf{C_{10}H_8}\)   ( Naphthalene )

Explanation:

Given that:

4.50 g of a Compound X is made up of Carbon , Hydron and Oxygen

It's molecular molar mass = 128 g/mol

Compound X undergoes combustion reaction and the product yield :

CO_2 with mass 15.47g and :

H_2O with mass 2.53 g

The objective is to use this information to determine the molecular formula of X.

We all know that ; number of moles = mass/molar mass

where the molar mass of H_2O is 18 g/mol

number of moles of H_2O product = 2.53 g/18 g/mol

number of moles of H_2O product = 0.1406 moles

Also; the molar mass of CO_2 product = 44 g/mol

number of moles of CO_2 product = 15.47g/ 44 g/mol

number of moles of CO_2 product =  0.3516 moles

number of moles of Compound X in the reactant side= 4.50 g /128 g/mol

number of moles of Compound X n the reactant side= 0.03516 moles

Now; number number of moles of CO_2 in reactant = 0.3516 moles/0.03516 moles

Now; number number of moles of CO_2 in reactant = 10

number of moles of H_2O reactant = 0.1406 moles × 2/0.03516

number of moles of H_2O reactant = 7.997 ≅ 8

Since we said the Compound X is known to be made of Carbon C , Hydrogen H and Oxygen O

Then the molecular formula can be written as :

\(\mathbf{C_{10}H_8O_{x}}\)

In order to find the x; we have

128  = (12 × 10 + 1 × 8 + 16 × x)

128 = 120 + 8 + 16x)

128  =  128 + 16 x

128 - 128 = 16 x

0 = 16 x

x = 0/16

x = 0

As x = 0 ; hence there are no oxygen present in the reaction

Thus; the molecular formula of Compound X = \(\mathbf{C_{10}H_8}\) which is also known as Naphthalene

Answer:

A. orqnges and bananas

B. Water and lemon juice

C. Air ( mixture of oxygen and nitrigen)

D. stones in water

E. smoke ( soot suspended in air)

F. coca cola ( Carbon dioxide dissolved in water)

Answer:

1.b

2.d

3.e

4.a

5.c

6.f

7.g

hope it help

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Answer:

The final temperature of sulfur dioxide gas is 215.43 C

Explanation:

Gay Lussac's Law establishes the relationship between the temperature and the pressure of a gas when the volume is constant. This law says that if the temperature increases the pressure increases, while if the temperature decreases the pressure decreases. In other words, the pressure and temperature are directly proportional quantities.

Mathematically, the Gay-Lussac law states that, when a gas undergoes a transformation at constant volume, the quotient of the pressure exerted by the temperature of the gas remains constant:

\(\frac{P}{T}=k\)

Assuming you have a gas that is at a pressure P1 and at a temperature T1 at the beginning of the experiment, by varying the temperature to a new value T2, then the pressure will change to P2, and it will be true:

\(\frac{P1}{T1} =\frac{P2}{T2}\)

The reference temperature is the absolute temperature (in degrees Kelvin)

In this case:

Replacing:

\(\frac{0.450atm}{293.15 K} =\frac{0.750 atm}{T2}\)

Solving:

\(T2 =\frac{0.750 atm}{\frac{0.450atm}{293.15 K} }\)

\(T2=\frac{0.750 atm}{0.450 atm} *293.15K\)

T2=488.58 K

Being 273.15 K= 0 C, then 488.58 K= 215.43 C

The final temperature of sulfur dioxide gas is 215.43 C

The statement is correct. The photoelectric effect refers to the phenomenon where electrons are ejected from the surface of a material when it is exposed to light. The frequency of light striking an electron in a metal must be above the threshold frequency in order for the photoelectric effect to occur.

The statement is correct. The photoelectric effect refers to the phenomenon where electrons are ejected from the surface of a material when it is exposed to light. However, for the photoelectric effect to occur, the frequency of the incident light must be above a certain threshold frequency.

The threshold frequency is the minimum frequency of light required to dislodge electrons from the material. Below this threshold frequency, regardless of the intensity or duration of the light, no electrons will be emitted.

This behavior can be explained by the particle-like nature of light, where light is composed of discrete packets of energy called photons. The energy of a photon is directly proportional to its frequency. Only photons with energy greater than or equal to the binding energy of the electrons in the material can dislodge them.

Therefore, the frequency of light striking an electron in a metal must be above the threshold frequency in order for the photoelectric effect to occur.

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The concentration of the unknown \(H_3PO_4\) solution would be 0.0368 M

The equation of the reaction is as follows:

\(H3PO_4(aq)+3NaOH(aq)--- > 3H_2O(l)+Na_3PO_4(aq)\)

The mole ratio of the  \(H_3PO_4\) solution to the NaOH solution is 1:3.

But 0.140 M, 25.24 mL of NaOH was used.

Recall that: mole = molarity x volume (in Liters)

Mole of 0.140 M, 25.24 mL of NaOH = 0.140 x 25.24/1000

                                                             = 0.0035336 mol

Following the mole ratio, the equivalent mole of \(H_3PO_4\) would be:

0.0035336 /3 = 0.00117786666

Recall that: molarity = mol/volume (in Liters)

Molarity of 0.00117786666 mol, 32.00 mL \(H_3PO_4\) = 0.00117786666/0.032

                                                                                  = 0.0368 M

In other words, the molarity of the \(H_3PO_4\) solution to 3 significant figures is 0.0368 M.

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Answer:

The new volume is 66.3 mL

Explanation:

Boyle's law states that pressure and volume are inversely proportional, and that P1V1=P2V2

P1 = 0.428 atm

P2=1.55 atm

V1 = 240 mL

V2 = ??

(0.428)(240)=(1.55)(V2)

102.72 = 1.55x

x = 102.72/1.55 = 66.27 mL.

0.01 mol/L is the molarity of given solution. 0.002 moles is added to 0.2 L solvent to make desired solution.

The amount of moles of solute found in a specific number of litres of the solution, or moles per litre of a solution, is known as molar concentration or molarity. Solutes are simply substances that can be found in solutions because a solution is defined as a homogenous mixture that comprises one or more solutes.

molar mass =342g /mol

number of moles=mass of solute / molar mass

0.45 /342 =0.002 moles

Volume solution =  50 mL / 1000 =0.2 L

M = n / V

M = 0.002 / 0.2

M = 0.01 mol/L

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Gravity the dominant force among planets because it acts at long distances.

Gravity is the weakest force as compared to the forces but it is the most dominant force because it has the longest range.

So we can conclude that Gravity the dominant force among planets because it acts at long distances.

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Answer:

Gas molecules move at different speed at a given temputure bc as temp increases they move faster

Explanation:

they move faster bc they gain kinetetic energy

Answer:

C) Mass

Explanation:

Answer: a

Explanation:

Industry uses only about 18% while the others use around 70-90% of water.

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The periodic table is organized by increasing atomic number.

This, however; also coincide by atomic mass

An element is a substance which cannot be split into simpler forms by an ordinary chemical process. This simply goes to say that elements are substances which cannot be decomposed into simpler substances by ordinary chemical reactions.

An atom is the smallest unit or part of an element which can take part in a chemical reaction.

On a general note, elements are classified as thus:

So therefore, the periodic table is organized by increasing atomic number.

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