How many elements are there in CH3 CH2COONa

Answer:

After performing a TLC experiment, you might place the TLC plate in a container with iodine crystals.

Answer:

Double Covalent

Explanation:

When two of the same element combine it will always be a covalent bond between them and since sulfur has two lone electrons it will make a double bond between the two to have a full octect

Answer:

2.04moles

Explanation:

Given parameters:

Number of molecules  = 1.23 x 10²⁴molecules

Unknown:

Number of moles of oxygen gas = ?

Solution:

To solve this problem;

                  6.02 x 10²³ molecules makes up 1 mole of any substance

                1.23 x 10²⁴molecules will make up \(\frac{1.23 x 10^{24} }{6.02 x 10^{23} }\)   = 2.04moles

6.02 x 10²³ molecules makes up 1 mole of any substance

               1.23 x 10²⁴molecules will make up = 2.04moles

The substance in red blood cells that carbon monoxide from cigarette smoke combines with is called hemoglobin.

Hemoglobin is a protein molecule found in red blood cells that is responsible for transporting oxygen from the lungs to the rest of the body. Hemoglobin consists of four subunits, each containing a heme group. The heme group contains an iron ion, which binds to oxygen molecules in the lungs.

Carbon monoxide (CO) from cigarette smoke can bind to the iron ion in the heme group with a much greater affinity than oxygen. When CO binds to hemoglobin, it forms a stable complex called carboxyhemoglobin (COHb).

This reduces the amount of hemoglobin available for binding with oxygen, which can lead to a reduction in the amount of oxygen that can be transported to the tissues.

The formation of COHb can also affect the release of oxygen from hemoglobin in the tissues. Hemoglobin releases oxygen in response to a decrease in oxygen concentration, which is sensed by the heme group. However, when CO binds to the heme group, it alters the shape of the hemoglobin molecule and reduces its ability to release oxygen.

As a result, the presence of carbon monoxide in the blood can lead to a range of health problems, including headaches, dizziness, shortness of breath, and even death in severe cases.

The best way to prevent carbon monoxide poisoning is to avoid exposure to smoke from tobacco products and other sources of combustion, such as gas heaters and stoves.

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Answer:

Explanation:

Here, we want to get the equation of the reaction between Hydrochloric acid and Zinc metal

Zinc metal displaces the hydrogen from hydrochloric acid to form zinc chloride

We have the equation of reaction as:

The combustion of lauric acid is shown as CH3(CH2)10COOH(s) + 18O2(g) -----> 12H20(l) + 12CO2(g)

In a combustion reaction, a substance is burnt in oxygen. If the substance is an organic compound a the case is here, the products are carbon dioxide and hydrogen.

No the equation of the combustion of lauric acid is shown as;

CH3(CH2)10COOH(s) + 18O2(g) -----> 12H20(l) + 12CO2(g)

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When a compound is formed, the substances are chemically bonded and lose their original properties.

A compound is made up of two or more substances that are joined with chemical bonds. The compound that is formed is different from the substances. For example, water is a compound, made up of oxygen and hydrogen.

The compounds are of different types. They are covalent compounds, ionic compounds, and intermetallic compounds.

Thus, the substances that are chemically bonded and lose their original properties are called compounds.

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The structural features which contributes to a high thermal conductivity are the direction of travel of heat and the nature of materials.

This is referred to as a measure of its ability to conduct heat or current and it is dependent on some factors such as the nature of the materials.

For example , metals conduct heat and electricity easily because the materials allow free electrons to move between the atoms and also the direction of travel of heat which is towards them is also a factor in this regard.

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Answer:

22.6 g

Explanation:

First we use the PV=nRT equation:

We input the data:

And solve for n:

Then we convert 0.708 moles of oxygen gas (O₂) to grams, using its molar mass:

Answer:

3.46 x 10²³ atoms C₃H₈

Explanation:

To find the total atoms, you need to (1) convert grams to moles (via molar mass from periodic table) and then (2) convert moles to atoms (via Avogadro's number).  It is important to arrange the ratios/conversions in a way that allows for the cancellation of units. To clarify, the desired unit should be in the numerator. The final answer should have 3 sig figs to match the given value (25.3 g).

Molar Mass (C₃H₈): 3(12.01 g/mol) + 8(1.008 g/mol)

Molar Mass (C₃H₈): 44.094 g/mol

Avogadro's Number:

6.022 x 10²³ atoms = 1 mole

25.3 g C₃H₈             1 mole              6.022 x 10²³ atoms
--------------------  x  ------------------  x  --------------------------------  =  
                               44.094 g                      1 mole

 =  3.46 x 10²³ atoms C₃H₈

Answer:

the correct answer is number 7

Answer:

I think this will help you

Explanation:

PLEASE MARK ME BRAINLIEST IF MY ANSWER IS CORRECT PLEASE

Answer:

i dont knoiwxplanation:

Answer:

35.1 g

Explanation:

Given data:

Mass of Al(OH)₃ = 100 g

Mass of water formed = ?

Solution:

Chemical equation:

2Al(OH)₃      →        Al₂O₃ + 3H₂O

Number of moles of Al(OH)₃:

Number of moles = mass/molar mass

Number of moles = 100 g/ 78 g/mol

Number of moles = 1.3 mol

now we will compare the moles of Al(OH)₃ with water.

                          Al(OH)₃         :          H₂O

                             2                :            3

                             1.3              :           3/2×1.3 = 1.95

Mass of water produced:

Mass = number of moles ×molar mass

Mass = 1.95 mol × 18 g/mol

Mass = 35.1 g

The freezing point of the solution is 6.213 °C. This is less than the freezing point of ether.

Freezing point of the solution can be determined by using the concept of freezing point depression, which is a colligative property.

The freezing point depression is given by the equation:

ΔTf = Kf * m

Where:

ΔTf = Freezing point depression

Kf = Cryoscopic constant (a constant specific to the solvent)

m = Molality of the solution

First, we need to calculate the molality (m) of the solution. Molality is defined as the number of moles of solute per kilogram of solvent.

We have 1.727 mol of solute and 483 g of ether (solvent).

First, we convert the mass of ether to kilograms:

Mass of ether = 483 g = 483/1000 kg = 0.483 kg

Now we can calculate the molality:

m = moles of solute / mass of solvent (in kg)

m = 1.727 / 0.483 ≈ 3.575 mol/kg

Next, we need the cryoscopic constant (Kf) for ether. The cryoscopic constant is specific to the solvent. For ether, the cryoscopic constant is approximately 1.74 °C kg/mol.

Finally, we can calculate the freezing point depression (ΔTf):

ΔTf = Kf * m

ΔTf = 1.74 °C kg/mol * 3.575 mol/kg

= 6.213 °C

Therefore, the freezing point of the solution is decreased by approximately 6.213 °C compared to the freezing point of pure ether.

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Answer:

f = 4.6 × 10¹⁴ Hz

Explanation:

Given data:

Wavelength  of light = 6.50x10^-7m

Speed of light = 3.00 x 10^8 m/s

Frequency of light = ?

Solution:

Formula:

Speed of radiation = frequency × wavelength

by putting values,

3×10⁸ m/s  =  f × 6.50x10^-7m

f  =  3×10⁸ m/s   /  6.50x10^-7m

f  =  0.46 × 10¹⁵ s⁻¹

f = 0.46 × 10¹⁵ Hz

f = 4.6 × 10¹⁴ Hz

A rainbow is produced through a proces that includes refraction, reflection, and dispersion of  sunlight.

A rainbow is formed when sulinght is refracted and reflected by rain drops in the atmospher.

The sunlight is split into its component colors, which is why rainbows appear as having an array of colors. This is due to each color being bent by a different amount during refraction.

The colors of a rainbow are always in the same order, with red on the outside and violet on the inside.

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The amount of \(HNO_3\) that can be made from 25.0 g of \(NO_2\) according to the reaction would be 22.68 grams.

From the balanced equation of the reaction:

\(3 NO_2 + H_2O -- > 2 HNO_3 + NO\)

The mole ratio of \(NO_2\) and  \(HNO_3\) is 3:2. In other words, for every 3 moles of \(NO_2\) that react, 2 moles of \(HNO_3\) are produced.

If mole = mass/molar mass

25.0 g of \(NO_2\) will be equivalent to (the molar mass of \(NO_2\) is 46 g/mol):

                   25/46 = 0.54 moles

From, the mole ratio of 3:2, 0.54 moles of \(NO_2\) will require:

    2/3 x 0.54 = 0.36 moles of  \(HNO_3\)

The molar mass of  \(HNO_3\) is 63.01 g/mol.

Mass of 0.36 moles of  \(HNO_3\) = 0.36 x 63.01

                                                  = 22.68 g

Thus, the mass of \(HNO_3\) that can be made from the reaction is 22.68 grams.

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Answer:

yes

Explanation:

yes

i think its volume but im not 100% sure

Answer:

D.

Explanation:

cuz liter is volume

Answer:

20000 mg

Explanation:

1 kg = 1000000

so if u multiply 0.020kg by 1000000 u get 20000

Answer:

it isn't clear for viewing

The molar mass of styrene (C8H8) is 104 g/mol, when a student dissolves 15.g of styrenein (C8H8) in 250 mL of a solvent with a density of 0.88g/mL.

To calculate the molarity of a solution, you must divide the number of moles of solute (styrene) by the volume (liters) of the solution: 1438 mol ÷ 0.

25 L = 0.5752 M = 0.58 M (rounded to two significant figures)

To calculate the molarity of a solution, divide the number of moles of solute by the mass of solvent in grams.

0.1438 mol ÷ 250 g = 0.0005752 mol/g = 0.

00058 mol/g (rounded to 2 significant figures

A student dissolved 15 g of styrene (C8H8) in 250 ml of solvent with a density of 0.88 g/ml. Styrene has a molar mass of 104 g/mol, so the number of moles of solute is 15 g ÷ 104 g/mol = 0.1438 mol The molarity of the solution is zero.

1438 mol ÷ 0.25 L = 0.58 M. Molarity is calculated as 0.1438 mol ÷ 250 g = 0.

00058 mol/g. Both molarity and molarity are measures of concentration and indicate the amount of solute in a solution.

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Explanation:

What is biology definition

Answer:

A and D

Explanation:

472.7ml of a .5500 M solution of NaI are needed to produce 34.81mg of I\(_2\) in the reaction COCl\(_2\)+2NaI  → 2NaCl+CO+I\(_2\).

A measurement of three-dimensional space is volume. Several imperial or US customary units, as well as SI-derived units (such the cubic meter and liter), are frequently used to quantify it quantitatively. Volume and length (cubed) have a symbiotic relationship.

COCl\(_2\)+2NaI  → 2NaCl+CO+I\(_2\)

number of moles of I\(_2\) =34.81/254=0.13moles

2 moles of NaI gives 1 moles of I\(_2\)

0.13moles are obtained by 2×0.13=0.26moles of NaI

0.550moles of I\(_2\) is present in 1000ml

0.26moles of I\(_2\) is present in (1000/0.55)×0.26=472.7ml

Therefore, 472.7ml of a .5500 M solution of NaI are needed to produce 34.81mg of I\(_2\).

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Answer:

The correct answer is - d. hydrogen bonding.

Explanation:

Water has strong hydrogen bonds between its molecules that require a very high amount of energy in order to break. Water molecules are joined together or bound with a strong intermolecular force called hydrogen bonds.

These bonds require more kinetic energy which means more temperature or heat in order to break the bonds and turn into steam and this is the reason it has a high boiling point.

The elements  are in the unknown sample of emission spectrums is lithium and potassium.

When light is emitted through a chemical material, it is known as an emission spectrum. An emission spectrum is a development of many types of lines in a variety of colors and wavelengths.

The red line emits light with the longest wavelength, which may be easily measured using a spectrophotometer when light passes through it.

Lithium and potassium are hence elements in the unidentified emission spectrum sample. B and E are the proper answers.

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Missing parts:

The emission spectrums are known for the elements below. Line spectra for boron, lithium, hydrogen, helium, potassium and unknown sample. Boron has 3 purple lines, 1 blue line, 2 blue-green lines and 2 orange lines. Lithium has 2 purple lines, 2 blue lines, 2 blue-green lines, 1 orange line and 1 red line. hydrogen has one line of each purple, blue, blue-green and red. helium has 3 purple lines, 3 blue lines, 3 blue-green lines 1 yellow line and 2 red lines. Potassium has 8 purple lines, 6 blue-green lines, 10 green lines, 3 yellow lines, 2 orange lines and 6 red lines. The unknown sample has Potassium has 8 purple lines, 6 blue-green lines, 10 green lines, 3 yellow lines, 2 orange lines and 6 red lines. What elements are in the unknown sample? Check all that apply. boron lithium hydrogen helium potassium