How to balance NaOH+CO2=Na2CO3+H2O by algebraic method?​

The percent yield of a chemical response is the proportion of the real yield to the hypothetical yield, communicated as a rate.

In this case, the hypothetical yield is 150 grams of sodium hydroxide, as calculated by the researcher. The genuine yield is 135 grams of sodium hydroxide, as gotten from the experiment.

The percent yield can be calculated utilizing the equation:

Percent yield = (real yield / hypothetical yield) x 100%

Substituting the values given within the issue, we get:

Percent  yield= (135 / 150) x 100%

Percent yield = 0.9 x 100%

Percent yield = 90%

Hence, the percent yield of the experiment is 90%. This implies that 90% of the hypothetical abdicate was gotten within the test.

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The final temperature at equilibrium will be approximately 26.525 °C.

To find the final temperature at equilibrium, we can use the equation:

Q = m * c * ΔT

Where:

Q = heat energy absorbed or released

m = mass of the substance

c = specific heat capacity of the substance

ΔT = change in temperature

In this case, 800 J of heat is absorbed by 120 g of water at 25 °C. We need to find the final temperature at equilibrium.

Using the equation for water:

Q_water = m_water * c_water * ΔT_water

Rearranging the equation, we can solve for the change in temperature (ΔT_water):

ΔT_water = Q_water / (m_water * c_water)

Substituting the given values:

ΔT_water = 800 J / (120 g * 4.18 J/g°C)

Calculating:

ΔT_water ≈ 1.525 °C

To find the final temperature at equilibrium, we add the change in temperature to the initial temperature:

Final temperature = 25 °C + 1.525 °C

Final temperature ≈ 26.525 °C

Therefore, the final temperature at equilibrium will be approximately 26.525 °C.

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Answer:

91 millilitres

Explanation:

Recommended application = 65mg / Kg

This means 65 mg of dicyclanil per kg (1 kg of body mass).

Concentration = 50 mg / mL

How many millilitres required to treat 70kg adult?

If 65mg = 1 kg

x = 70 mg

x = 70 * 65 = 4550 mg

Concentration = Mass / Volume

50 mg/mL = 4550 / volume

volume = 4550 / 50 = 91 mL

-ZnO is the compound illustrated by the law of constant composition.

According to the rule of constant proportion, the elements are always present in certain amounts to one another by mass in chemical compounds. For instance, regardless of how or where water is obtained, it always contains H2O, hydrogen, and oxygen in a mass ratio of 1:8, according to an example.

for sample A

mass Zn = 8.11g

mass of O =10-8.11=1.89g

Zn= 8.11/65 = 0.1

O= 1.89/16 =0.1

ratio is 1:1

compound = ZnO

for sample b

Zn= 10.70g

O= 13.2-10.7=2.5g

Zn= 10.70/65 =1

O= 2.5/16 =0.16=1

ratio = 1:1

compound= -ZnO

Therefore, it is shown that the figures illustrate the law of constant composition.

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Answer:

Explanation:

If a substance can be separated into its elements, it is a compound. If a substance is not chemically pure, it is either a heterogeneous mixture or a homogeneous mixture.

Answers:

Fission breaks apart nuclei

Fusion puts them together.

======================================================

Explanation:

The term "fission" is related to the term "fissure" which means "a cut or divide", often describing a geologic feature of the earth (eg: a crack in the rock).

Fusion is the idea of putting things together, which is the opposite of fission. The term doesn't have to apply to nuclear fusion. It could be something like the fusing of two ideas to create one new idea.

Answer:

the 2nd one

Explanation:

A. The maximum theoretical yield of the gaseous product in grams is 0.037 g

B. The grams of the excess reagent are left over is 0.97 g

C. The pH of the HBr solution is 1.37

D. The OH¯ concentration of the HBr solution is 2.33×10¯¹³ M

E. The volume (in mL) of the gaseous product is 323 mL

F. The new temperature of the gas is 61 °C

We'll begin by calculating the mole of HBr in the solution. This is illustrated below:

Molarity = mole / Volume

Mole = molarity × volume

Mole of HBr = 0.043 × 0.8506

Mole of HBr = 0.0366 mole

Thus, the mass of HBr can be obtained as follow:

Mass = mole × molar mass

Mass of HBr = 0.0366 × 81

Mass of HBr = 2.96 g

Balanced equation

Ca + 2HBr --> CaBr₂ + H₂

Molar mass of Ca = 40 g/mol

Mass of Ca from the balanced equation = 1 × 40 = 40 g

Molar mass of HBr = 81 g/mol

Mass of HBr from the balanced equation = 2 × 81 = 162 g

Molar mass of H₂ = 2 g/mol

Mass of H₂ from the balanced equation = 1 × 2 = 2 g

SUMMARY

From the balanced equation above,

40 g of Ca reacted with 162 g of HBr to produce 2 g of H₂

Next, we shall determine the limiting reactant.

From the balanced equation above,

40 g of Ca reacted with 162 g of HBr.

Therefore,

1.7 g of Ca will react with = (1.7 × 162) / 40 = 6.885 g of HBr.

Since a higher amount of HBr is needed, therefore HBr is the limiting reactant and Ca is the excess reactant

Finally, we shall determine the maximum theoretical yield of the gaseous product. details below

From the balanced equation above,

162 g of HBr reacted to produce 2 g of H₂.

Therefore,

2.96 g of HBr will react to produce = (2.96 × 2) / 162 = 0.037 g of H₂

Thus, The maximum theoretical yield of the gaseous product obtained is 0.037 g

Ca is the excess reactant

From the balanced equation above,

162 g of HBr reacted with 40 g of Ca.

Therefore,

2.96 g of HBr will react with = (2.96 × 40) / 162 = 0.73 g

Thus, the mass of the excess reactant leftover can be obtained as illustrated below:

Mass of excess reactant leftover = 1.7 - 0.73

Mass of excess reactant leftover = 0.97 g

pH = –Log H⁺

pH = –Log 0.043

pH = 1.37

[H⁺] × [OH¯] = 10¯¹⁴

0.043 × [OH¯] = 10¯¹⁴

Divide both side by 0.043

[OH¯] = 10¯¹⁴ / 0.043

[OH¯] = 2.33×10¯¹³ M

Using the ideal gas equation, the volume of the gas can be obtained as follow:

PV = nRT

Divide both side by P

V = nRT / P

V = (0.0185 × 0.0821 × 362) / 1.7

V = 0.323 L

Multiply by 1000 to express in mL

V = 0.323 × 1000

V = 323 mL

The new temperature of the gas can be obtained by using the combined gas equation as illustrated below:

P₁V₁ / T₁ = P₂V₂ / T₂

(1.7 × 0.323) / 362 = (0.329 × 1.54) / T₂

Cross multiply

1.7 × 0.323 × T₂ = 362 × 0.329 × 1.54

Divide both side by 1.7 × 0.323

T₂ = (362 × 0.329 × 1.54) / (1.7 × 0.323 )

T₂ = 334 K

Subtract 273 to obtain answer in °C

T₂ = 334 – 273 K

T₂ = 61 °C

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4.7 × 10²⁴ atoms Li

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

7.8 mol Li

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

Step 4: Check

We are told to round to 2 sig figs. Follow sig fig rules and round.

4.69716 × 10²⁴ atoms Li ≈ 4.7 × 10²⁴ atoms Li

Based on the provided steps, we are conducting an experiment involving copper(II) sulfate solution and zinc powder. We are measuring the temperature change that occurs when zinc reacts with copper(II) sulfate.

Measurement:

Initial temperature (°C): This is the temperature of the copper(II) sulfate solution before adding zinc powder. Use a thermometer to measure and record this temperature.

Final temperature (°C): This is the highest temperature reached by the solution after adding the zinc powder and allowing the reaction to occur. Watch the thermometer for a couple of minutes and record the highest temperature observed.

Temperature change (°C): Calculate the difference between the initial and final temperatures. Subtract the initial temperature from the final temperature and record the result as the temperature change.

Follow the steps provided to carry out the experiment and record the corresponding measurements in the table. Make sure to use the pipette to transfer 10 milliliters of copper(II) sulfate solution to test tube 3, then add 0.25 grams of zinc powder to the test tube.

Monitor the temperature using a thermometer and record the initial and final temperatures accurately. Finally, calculate the temperature change by subtracting the initial temperature from the final temperature and record the value in the table.

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The correct answer is Option 2: The overall reaction is>

The reaction of hydrogen and iodine chloride produces hydrogen iodide as an intermediate. This means that the rate of the reaction is determined by the concentrations of all three species:

The rate law, which expresses the relationship between the rate of the reaction and the concentration of the reactants, is rate = k [H2] [HI] [ICI], where k is the rate constant. This means that the rate of the reaction is proportional to the concentrations of H2, HI, and ICI.

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Answer:

About 24 hours

Explanation:

Think of it as Earths spin

steam takes up the largest volume but  surprisingly as ice has larger volume than liquid.

In Water the  molecules are attracted to each other while at low temperature these molecules are held together in a rigid structure called as ice.

When temperature increases the molecules gains more energy which enables them to escape the lattice state and converted into water form, flow.  

At the highest temperature these molecules  gain huge amount of energy in which they can easily overcome the inter-molecular attraction that is gaseous state.

In gaseous state the molecules move freely.

The intermolecular forces in solid state of water are very strong while in liquid state it is moderate and in gaseous state  it is very weak.

The chemical composition of water in all three states can not change like physical state change.

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Answer:

a. The Zn and HCl both retained their identity.

Large-scale convection currents create divergent plate boundaries in science.

This refers to vertical motion organized on a larger scale than atmospheric free convection, it is associated with cumulus clouds. Examples of large-scale convection currents patterns of vertical motion is hurricanes or migratory cyclones.

Large convection currents in the aesthenosphere send heat to the surface, where plumes of less dense magma break apart the plates at the spreading centers, giving rise to divergent plate boundaries.

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To solve this question, you need to use Clapeyron's equation:

P.V = n.R.T

P = pressure generated by the gas on the walls of the container;

V = volume occupied by the gas and can be expressed in liters or cubic meters;

n = number of mol (amount of substance in the gas);

R = general gas constant proposed by Clapeyron and depends on the pressure unit used (in atm, it is 0.082; in mmHg, it is 62.3; in KPa, it is 8.31);

T = temperature at which the gas is subjected (always used in the unit Kelvin).

So we have:

n = 1.13

P = 2.6 atm

V = 18.4 L

T = ?

R = 0.082 atm.L/mol.K

PV = nRT

2.6 x 18.4 = 1.13 x 0.082 x T

47.84 = 0.09266T

T = 516.3 K

Answer: The temperature is 516.3 K

Fluorine (F-) is the element with the fewest valence electrons. Seven electrons make up the outermost shell of fluorine, and one of them is unpaired. As a result, fluorine possesses seven valence electrons altogether.

Eight valence electrons are present in magnesium (Mg2+), nine are present in gallium (Ga+), eight are present in argon (Ar+), four are present in carbon (C+), six are present in sulphur (S2-), and seven are present in fluorine (F-).

Fluorine has a lower number of valence electrons than the other elements because it has a greater effective nuclear charge. This indicates that the fluorine atom will take electrons away from its outermost shell since it is more attracted to electrons than the other elements.

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The field of chemistry that explains why bromine trifluoride reacts differently than water vapor during a reaction is called chemical kinetics.

What is Energy?

Energy is a fundamental concept in physics, often defined as the ability to do work. It can take many different forms, including thermal energy, kinetic energy, potential energy, electromagnetic radiation, and chemical energy, among others. Energy can be transferred from one system to another, and it can also be converted from one form to another. The SI unit of energy is the joule (J), although other units such as the calorie and the electronvolt are also used in specific contexts.

The field of chemistry that explains why bromine trifluoride reacts differently than water vapor during a reaction is called reaction kinetics. Reaction kinetics is the study of how fast chemical reactions occur and what factors affect the reaction rate. It takes into account factors such as the nature of the reactants, concentration, temperature, surface area, and the presence of a catalyst or inhibitor.

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1 moles of a monoatomic gas increases its volume from 1 to 3 while the pressure also increases from 250 to 1000. So, the temperature of the gas increased from 30.1 K to 120.3 K.

If the temperature and the number of moles of the gas remain constant, the pressure and volume of the gas are inversely proportional to each other. This relationship is described by the ideal gas law:

PV = nRT

where P is the pressure of the gas, V is the volume of the gas, n is the number of moles of the gas, R is the universal gas constant, and T is the temperature of the gas. In this case, you have given that the number of moles of the gas (n) is 1 mole, the temperature (T) is constant, and the pressure (P) and volume (V) both change. We can use the ideal gas law to solve for the final temperature of the gas.

First, we can rearrange the ideal gas law to solve for T:

T = (PV)/(nR)

We can then use the initial and final values of P and V to calculate the initial and final temperatures of the gas.

Initial temperature: T1 = (250 * 1)/(1 * 8.31) = 30.1 K

Final temperature: T2 = (1000 * 3)/(1 * 8.31) = 120.3 K

Therefore, the temperature of the monoatomic gas increased from 30.1 K to 120.3 K as the volume increased from 1 to 3 while the pressure increased from 250 to 1000.

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Question- 1 moles of a monoatomic gas increases its volume from 1 to 3 while the pressure also increases from 250 to 1000. What is the change in temperature of gas is?

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

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Answer:

polarity

Explanation:

because of its polarity it can dissolve mutiple substance

Answer:

An allele is a variant form of a gene that occurs at a specific location on a chromosome. In other words, it is one of two or more versions of a gene that exist in a population or an individual organism.

Each organism inherits two copies of each gene, one from each parent. The two copies may be the same (homozygous) or different (heterozygous) alleles. The combination of alleles determines the organism's genotype, which in turn influences its phenotype, or observable traits.

Alleles may differ in their effects on the organism, with some being dominant (expressed even in the presence of a different allele) and others being recessive (expressed only in the absence of a dominant allele). The study of alleles and their effects on inheritance is known as genetics, a field that has important applications in medicine, agriculture, and many other areas.

Explanation:

Answer:

4

Explanation:

D=M/V

D=20.0/5

D=4

The volume of hydrogen gas produced in the reaction of 73 grams of zinc and 73 grams of hydrochloric acid (under normal conditions) is approximately 22.4 liters.

To calculate the volume of hydrogen gas produced in the reaction of zinc and hydrochloric acid, we need to use the principles of stoichiometry and the ideal gas law.

First, let's write the balanced chemical equation for the reaction between zinc (Zn) and hydrochloric acid (HCl):

Zn + 2HCl →\(ZnCl_2\)+ H2

From the equation, we can see that one mole of zinc reacts with two moles of hydrochloric acid to produce one mole of hydrogen gas. To determine the number of moles of zinc and hydrochloric acid, we need to convert the given masses into moles.

The molar mass of zinc (Zn) is approximately 65.38 g/mol, so 73 grams of zinc is equal to:

73 g Zn * (1 mol Zn / 65.38 g Zn) ≈ 1.116 mol Zn

Similarly, the molar mass of hydrochloric acid (HCl) is approximately 36.46 g/mol, so 73 grams of HCl is equal to:

73 g HCl * (1 mol HCl / 36.46 g HCl) ≈ 2.002 mol HCl

According to the balanced equation, the reaction produces one mole of hydrogen gas for every two moles of hydrochloric acid. Therefore, since we have 2.002 moles of HCl, we expect to produce half that amount, or approximately 1.001 moles of hydrogen gas.

To calculate the volume of hydrogen gas, we can use the ideal gas law, which states:

PV = nRT

Where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature. In this case, we assume the reaction is conducted under normal conditions, which means a pressure of 1 atmosphere and a temperature of 273.15 Kelvin.

Rearranging the equation to solve for V, we have:

V = nRT / P

Substituting the values, we get:

V = (1.001 mol) * (0.0821 L·atm/(mol·K)) * (273.15 K) / (1 atm) ≈ 22.4 L

Therefore, the volume of hydrogen gas produced in the reaction is approximately 22.4 liters.

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The electronic configuration is also used to explain the orbitals of an atom and it helps to determine the physical and chemical properties of the elements. Here the electronic configuration of chromium is 1s²2s²2p⁶3s²3p⁶4s¹3d⁵.

The distribution of electrons in the atomic orbitals is given by the electronic configuration. It is a standard notation in which all the electrons holding atomic subshells are arranged in a sequence. Each element has a unique electronic configuration.

The electronic configuration of an element can be written in two ways, in standard notation, and in condensed form. In the case of elements with larger atomic numbers, the electronic configuration becomes lengthy in standard notation. So in such cases condensed form is generally used.

In condensed form, Cr: [Ar] 3d⁵4s¹

There are six unpaired electrons in [Cr(H₂O)₆]³⁺ and it is a paramagnetic complex.

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Answer:

In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

Explanation:

Clofibrate is a lipid-lowering pharmaceutical that has been utilized to treat hyperlipidemia. Its metabolism system includes different pathways such as hydrolysis, oxidation, conjugation, and others.

Metabolites are little molecules that are produced during the process of  metabolism in living living beings.

Clofibrate hydrolysis metabolite:

Clofibrate oxidation metabolites:

Clofibrate alkylation metabolites:

Clofibrate conjugation metabolites:

Conclusively, the relative abundance and significance of each metabolite can vary among individuals.

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