Name the following hydrocarbons:

Answer:its a chemixal change because  there are stuff getting mixed togehter making it a chemiacl change

Explanation:

(a) Alkalinity expressed as \(CaCO3 = (2 x [HCO3-]) + [CO3^2-] + [OH-] - [H+] (2 x 165) + 0 + = 330 mg/L as CaCO3\)

(b) Hardness as CaCO3 = \((10^-7.5) - (10^-7.5)\) x 50 mg/L = (90 + 30) x 50 = 6000 mg/L as CaCO3

(c) Total dissolved solids = sum of ion concentrations = 732 mg/L

(a) The alkalinity is the measure of the water's capacity to neutralize acid. It is expressed as CaCO3. The alkalinity can be determined by calculating the sum of bicarbonate (HCO3-), carbonate  and hydroxide (OH-) concentrations in the water. To calculate alkalinity, we first need to convert bicarbonate and carbonate concentrations to an equivalent concentration of carbonate.

\(HCO3^- + OH^- → H2O + CO3^2-\)

Alkalinity = \([HCO3^-] + 2[CO3^2-] + [OH^-]\)

Alkalinity = 165 + 0 + (2 × 0) = 165 mg/L (expressed as CaCO3)

Therefore, the alkalinity expressed as CaCO3 is 165 mg/L.

(b) Hardness is the measure of the concentration of calcium and magnesium ions in the water. It is also expressed as CaCO3. To calculate hardness, we add the concentrations of calcium and magnesium ions in the water.

Hardness = \([Ca^2+] + [Mg^2+]\)

Hardness = 90 + 30 = 120 mg/L (expressed as CaCO3)

Therefore, the hardness expressed as CaCO3 is 120 mg/L.

(c) Total dissolved solids (TDS) are the amount of inorganic and organic substances present in the water. TDS can be estimated by summing the concentrations of all the ions present in the water.

\(TDS = [Ca^2+] + [Mg^2+] + [Na^+] + [C1^-] + [SO4^2-] + [HCO3^-]\)

TDS = 90 + 30 + 72 + 120 + 225 + 165 = 702 mg/L

Therefore, the estimated total dissolved solids in the water are 702 mg/L.

Learn more about  Alkalinity expressed

https://brainly.com/question/13584094

#SPJ4

If a compound rotates plane-polarized light in a clockwise direction, the compound is called dextrorotatory, and is labeled d

If a compound rotates plane-polarized light in a anti- clockwise direction, the compound is called levorotatory compound is labeled as l.

An enantiomers rotate the plane polarized light in clockwise direction or positive direction is called dextrorotatory. given as [(+), d- ]. while enantiomers that rotates plane polarized light in anti - clock wise direction or negative direction is called levorotatory compound . given as [ (-) , l-].

Thus, If a compound rotates plane-polarized light in a clockwise direction, the compound is called dextrorotatory, and is labeled d

If a compound rotates plane-polarized light in a anti- clockwise direction, the compound is called levorotatory compound is labeled as l.

To learn more about plane polarized light here

https://brainly.com/question/16185241

#SPJ1

Answer:

4g of hydrogen

Explanation:

4g of hydrogen (molar mass 2) corresponds to 2 moles of molecules or 4N number of atoms where N is the Avogadro's number (6.023×10

23)

Answer:

All of the above

Explanation:

I chose Option C because a living organism contains DNA and it can reproduce made of cells with membrane bound nucleus.

Answer:

K3N

Explanation:

writing formulas from valency

the valency of potassium is 1

the valency of nitrogen is 3

that will be

K. N

1. 3

cross multiply

that will be

K3N

Answer: theres 5

Explanation: valence electrons are the electrons in the outer shell. I took that test a few weeks ago :0

The functional groups can be identified via IR Spectroscopy, which monitors atom vibrations.

It is feasible to identify the functional groups using IR Spectroscopy, which monitors the atoms' vibrations. 5 Typically, lighter atoms and stronger connections will vibrate with a higher stretching frequency (wavenumber).

IR spectra of solids and liquids are often produced using straightforward liquid cells after the sample has been dissolved in a solvent that is moderately IR transparent, like CCl4. Another method for studying a solid directly involves grinding it into a fine paste using NUJOLTM, a blend of highly pure hydrocarbons.

The process involves passing infrared light through the organic compound we wish to identify; some of the frequencies are absorbed by the compound, and if we keep track of the light that passes through, the precise frequencies of the absorptions may be determined.

To learn more about IR spectrum refer to:

https://brainly.com/question/5951360

#SPJ4

The gas occupies a volume of approximately 28.18 liters at a temperature of 28°C and a pressure of 1.631 atm

To determine the volume the gas occupies at a temperature of 28°C and a pressure of 1.631 atm, we will use the Ideal Gas Law, which is defined as PV = nRT. In this equation, P represents pressure, V represents volume, n represents the number of moles of the gas, R is the ideal gas constant, and T is the temperature in Kelvin.

First, we need to convert the temperature from Celsius to Kelvin: T(K) = T(°C) + 273.15. In this case, T(K) = 28 + 273.15 = 301.15 K.

Now, we can use the Ideal Gas Law to find the volume of the gas. The ideal gas constant (R) is 0.0821 L atm/mol K. Therefore, we have:

1.631 atm (V) = 3 moles (0.0821 L atm/mol K) (301.15 K)

To find the volume (V), we can rearrange the equation and isolate V:

V = (3 moles * 0.0821 L atm/mol K * 301.15 K) / 1.631 atm

V = 45.98271 L/mol / 1.631 atm

V ≈ 28.18 L

So, the gas occupies a volume of approximately 28.18 liters at a temperature of 28°C and a pressure of 1.631 atm.

To know more about temperature, visit:

https://brainly.com/question/29133754#

#SPJ11

Answer:

I dont understand what is the question you need help on-

Explanation:

Answer:

Explanation:

Maintaining a healthy, perennial plant cover.

Mulching.

Planting a cover crop – such as winter rye in vegetable gardens. ...

Placing crushed stone, wood chips, and other similar materials in heavily used areas where vegetation is hard to establish and maintain.???

The expected blood gas values for this patient at the time of admission of patient is option E. pH 7.51; PaCO₂ = 20 mm Hg; [HCO₃]⁻ = 24 mEq/L; Anion Gap = 12 mEq/L

A 20-year-old woman presents to the Emergency Department with persistent symptoms of palpitations, dizziness, sweating, and paresthesia. She has a history suggestive of an anxiety disorder.

To assess her condition, blood gases and electrolytes are ordered, and a positron emission tomography (PET) scan is performed. The PET scan reveals increased perfusion in the anterior portion of each temporal lobe. Based on these findings, the doctor prescribes a benzodiazepine medication.

The expected blood gas values at the time of admission can be determined by analyzing the given options:

A. pH 7.51; PaCO₂ = 49 mm Hg; [HCO₃]⁻ = 38 mEq/L; Anion Gap = 12 mEq/L

B. pH 7.44; PaCO₂ = 25 mm Hg; [HCO₃]⁻ = 16 mEq/L; Anion Gap = 12 mEq/L

C. pH 7.28; PaCO₂ = 60 mm Hg; [HCO₃]⁻ = 26 mEq/L; Anion Gap = 12 mEq/L

D. pH 7.28; PaCO₂ = 20 mm Hg; [HCO₃]⁻ = 16 mEq/L; Anion Gap = 25 mEq/L

E. pH 7.51; PaCO₂ = 20 mm Hg; [HCO₃]⁻ = 24 mEq/L; Anion Gap = 12 mEq/L

By evaluating the options, the most appropriate choice is:

E. pH 7.51; PaCO₂ = 20 mm Hg; [HCO₃]⁻ = 24 mEq/L; Anion Gap = 12 mEq/L

This option presents a higher pH (alkalosis) and a decreased PaCO₂ (respiratory alkalosis), which could be consistent with the patient's symptoms of hyperventilation due to anxiety. The [HCO₃]⁻ level within the normal range and a normal anion gap further support this interpretation.

In summary, the expected blood gas values for this patient at the time of admission are a higher pH, decreased PaCO₂, normal [HCO₃]⁻, and a normal anion gap, indicative of respiratory alkalosis likely caused by hyperventilation related to her anxiety disorder.

To know more about Blood gas values here: https://brainly.com/question/27826544

#SPJ11

Answer:

2y+3m2= 2ym3

Explanation:

Balances out

2y=2y

6m=6m

The first step of the reaction, we have  reaction between a nucleophile and an electrophile.

We can see that in the first step of the reaction, we have  reaction between a nucleophile and an electrophile. In this case, the electrophile would have to be an alkyl halide which produces a carbocation as show in the image attached. What we have here is quite similar or  like most of the organic reactions, this reaction occurs in a number of detailed or smaller steps and each step of the reaction is going to help to bring us closer to the end product of the entire steps of the reaction which is wat we target as we carry out the particular reaction.The second step involves the reduction of the alkyne with the use of a Lindlar catalyst. As such the reaction is poisoned and it stops at the alkyne stage rather than going on to obtain the alkane.

Learn more about electrophile here:

https://brainly.com/question/21773561

#SPJ4

A mixture’s components can be separated by the technique of Chromatography.

It is widely used in various fields including forensics, chemistry, biology, and medicine. Chromatography works by taking advantage of different components within a sample and utilizing the differences in their behavior, such as their interactions with a chromatography column.

The most common type of chromatography is based on the principle of selective adsorption, in which components of the mixture bind to the stationary phase material, and move at different speeds when a mobile phase is added. The technique works by allowing components to separate based on their individual interactions with the surfaces of the chromatography column.

In general, chromatography is a useful technique for analyzing mixtures of organic compounds in a sample. This is done by separating the compounds in order of their relative solubility in different solvents. The solubility of each solvent is used to select proper temperatures for the chromatography process.

know more about Chromatography here

https://brainly.com/question/11960023#

#SPJ11

There has been extensive research on how learning works across many different academic fields.

Thus,  Basic studies of the brain mechanisms underlying learning in humans and other species have traditionally been conducted in the fields of neurology and biology and learning.

Studies of how the human mind "computes," creating and applying knowledge, have typically been conducted in the fields of cognitive science and psychology and academic fields.

Studies of how machines (such as computers and robots) learn have typically been conducted in the fields of computer science and other branches of engineering; and studies of how learning occurs in the learning.

Thus, There has been extensive research on how learning works across many different academic fields.

Learn more about learning, refer to the link:

https://brainly.com/question/1503472

#SPJ1

Answer:

i think ur right

Explanation:

The heat that is released by 4.5 moles of methane gas is 4005 kJ.

The chemical reaction of combustion involves the breaking of chemical bonds in the fuel molecules, followed by the recombination of atoms with oxygen to form new molecules such as carbon dioxide, water vapor, and other combustion products.

We know that the balanced reaction equation have been shown in the image that is attached here.

As such we have that;

1 mole of methane gas produces 890 kJ of heat

4.5 moles of methane gas would produce 4.5 * 890/1

= 4005 kJ

Learn more about combustion:https://brainly.com/question/15117038

#SPJ1

Answer:

total displacement \time

Explanation:

Considering the definition of density and intensive and extensive properties, the density of each piece of gold is 19.3 \(\frac{g}{cm^{3} }\)

Density is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space. In other words, density is a quantity that allows us to measure the amount of mass in a certain volume of a substance.

Intensive properties are those that will remain unchanged even though the amount of matter varies, while extensive properties vary depending on the amount of matter in a body.

Density is an intensive property, so it is independent of the sample size. This is because the solute will be present in a certain proportion with respect to the solvent. That ratio will not change unless more solute or more solvent is added. Consequently, the concentration remains constant (concentration is an intensive property) and density too.

Finally, the density of each piece of gold is 19.3 \(\frac{g}{cm^{3} }\)

Learn more about density:

The reaction is in order relative to I in the number 1. when the oxidation of iodide ions by arsenic acid in acidic aqueous solution occurs according to the stoichiometry.

In each of the reactants, the rate law displays the sequence in which a certain reaction occurs. The rate rule is Rate = k [H3AsO4] [I] [H3O+], and it applies to the reaction H3AsO4 + 3 I + 2 H3O+ ------> H3AsO3 + I3 I + H2O.

The reaction is first order with regard to each of the reactants, according to the interpretation of this. Consequently, the reaction is of the order of 1, relative to I.

The pace at which a chemical reaction occurs is known as the reaction rate or rate of reaction, and it is proportional to both the rise in product concentration per unit time and the fall in reactant concentration per unit time. Variable reaction times

For more information on rate of reaction kindly visit to

https://brainly.com/question/13158771

#SPJ4

When the stoichiometric oxidation of iodide ions by arsenic acid in an acidic aqueous solution occurs, the reaction is in order relative to I in number 1.

The rate law illustrates the order in which various reactions take place in each reactant. The reaction H3AsO4 + 3 I + 2 H3O+ follows the rate rule Rate = k [H3AsO4] [I] [H3O+]. H3AsO3 + I3 I + H2O is the equation.

The interpretation of this is that the reaction is first order with respect to each of the reactants. As a result, in relation to I, the reaction is of order 1.

The reaction rate, also known as the rate of reaction, is the rate at which a chemical reaction takes place. It is proportional to both the increase in product concentration per unit of time and the decrease in reactant concentration per unit of time. different reaction times.

To know more about the rate of reaction visit :

https://brainly.com/question/13440548

#SPJ4

a. 63.13 g of silver bromide is formed. b. Potassium bromide is limiting, and silver nitrate is in excess. c. 0.56 g of potassium bromide is left over. d. The percent yield is 46.96%.

In this problem, we first need to determine which reactant is limiting and which one is in excess. To do this, we can calculate the amount of product that each reactant would produce if it were completely consumed. The reactant that produces less product is the limiting reactant, and the other reactant is in excess.

In this case, using the molar masses of the reactants and the stoichiometry of the balanced chemical equation, we find that silver nitrate would produce 108.22 g of silver bromide, while potassium bromide would produce only 63.13 g. Therefore, potassium bromide is limiting, and silver nitrate is in excess.

To determine the amount of excess reactant left over, we can use the amount of limiting reactant consumed in the reaction to calculate the amount of product formed, and then subtract this from the total amount of product formed. In this case, 29.12 g of potassium bromide is consumed, producing 63.13 g of silver bromide. Therefore, 92.67 g - 29.12 g = 63.55 g of potassium bromide is in excess, and 63.55 g - 63.13 g = 0.42 g of potassium bromide is left over.

Finally, to calculate the percent yield, we can divide the actual yield (14.77 g) by the theoretical yield (63.13 g) and multiply by 100%. This gives us a percent yield of 23.41%, but we need to divide by the stoichiometric coefficient of silver bromide (1) to get the percent yield based on silver bromide. Therefore, the percent yield based on silver bromide is 23.41%/1 = 23.41%. The percent yield based on silver nitrate or potassium bromide would be different, but they are not relevant for this problem.

learn more about bromide here:

https://brainly.com/question/13148281

#SPJ11

A higher dispersion force than HBR leads to a higher boiling point of HBR and a larger force between dipoles.

Both HBr and HCl are polar molecules. Therefore, both molecules have dipole-dipole interactions. The attraction is greater with Hcl and HBR than with Hcl alone. Dipole-dipole forces occur between molecules with permanent dipoles (polar molecules). For molecules of similar size and mass, these forces increase with increasing polarity. Polar molecules also induce dipoles in nonpolar molecules, resulting in dipole-induced dipole forces. A higher dispersion force than HBR leads to a higher boiling point of HBR and a larger force between dipoles.

Learn more about Dipole

brainly.com/question/14523479

#SPJ4

Therefore, the molarity of the solution is 16.31 M when a student has 4.37 mol of solute dissolved to make 268 mL of solution.

Molarity is a measure of the concentration of a solute in a solution, defined as the number of moles of the solute per liter of the solution. It is usually denoted by the symbol "M" and has units of moles per liter (mol/L).

Here,

To calculate the molarity of the solution, we need to use the formula:

Molarity = moles of solute / volume of solution in liters

First, we need to convert the volume of the solution from milliliters to liters:

268 mL = 0.268 L

Next, we can calculate the moles of solute:

moles of solute = 4.37 mol

Now we can plug in these values to calculate the molarity:

Molarity = 4.37 mol / 0.268 L

Molarity = 16.31 M (rounded to the nearest hundredth)

To know more about molarity,

https://brainly.com/question/8732513

#SPJ1

Answer: V2= 41.2mL

Explanation:

Givens:

* V1= 20ml

* T1 = -109 ⁰C --> K= ⁰C + 273.15 --> 164.15 K

* V2 = ??

* T2= 338.15 K

Use Charles law V1/T1 = V2/T2

Since we are looking for V2 we can rearrange the formula to

V2= (T2 x V1) /T1

V2= (338.15K x 20mL) / 164.15 K

V2= 41.2mL

NOTE:

Temperature should always be in K not in ⁰C or ⁰F

To convert from C to K use

*K= ⁰C + 273.15

Enter your C value in the ( ⁰C ) and you can get K

The equation related to reaction between Sulfur dioxide and oxygen to produce sulfur trioxide is 2SO\(_2\)(g) + O\(_2\)(g) \(\rightarrow\) 2SO\(_3\) (g).  SO\(_2\)  is limiting reagent.

The reactant that controls how much of the products are generated inside a chemical reaction is known as the limiting reagent. Since some of the other reactants remain that after limiting reagent has been used fully, it is occasionally discovered that they are in excess in the reactions. The theoretical yield is the most product that can theoretically be produced.

2SO\(_2\)(g) + O\(_2\)(g) \(\rightarrow\) 2SO\(_3\) (g)

moles of SO\(_2\) =20.0 g / 64.07

                      =0.312moles

moles of O\(_2\)= 15.6 g/32

                   =0.487moles

On dividing the moles by stoichiometry, out of  O\(_2\) and SO\(_2\), SO\(_2\)  is limiting reagent.

Therefore,  the equation related to reaction between Sulfur dioxide and oxygen to produce sulfur trioxide is 2SO\(_2\)(g) + O\(_2\)(g) \(\rightarrow\) 2SO\(_3\) (g).  SO\(_2\)  is limiting reagent.

To know more about limiting reagent, here:

https://brainly.com/question/26905271

#SPJ1

The molecular formula of the compound is C2H2O2Cl2.

To determine the molecular formula of a compound with the empirical formula CHOCl and a molecular weight of 129 g, we need to find the actual number of atoms of each element in the compound.The empirical formula CHOCl suggests that the compound contains one carbon (C), one hydrogen (H), one oxygen (O), and one chlorine (Cl) atom.To calculate the molecular formula, we need to compare the empirical formula's empirical mass to the compound's actual molecular weight. The empirical mass of CHOCl can be calculated by adding the atomic masses of the constituent elements: C (12.01 g/mol) + H (1.01 g/mol) + O (16.00 g/mol) + Cl (35.45 g/mol) = 64.47 g/mol.By dividing the molecular weight of 129 g by the empirical mass of 64.47 g/mol, we find that the compound's molecular formula is approximately C2H2O2Cl2.The molecular formula C2H2O2Cl2 indicates that the compound contains two carbon atoms, two hydrogen atoms, two oxygen atoms, and two chlorine atoms. This formula has a molecular weight of approximately 129 g, which matches the given molecular weight.

for such more questions on molecular

https://brainly.com/question/24191825

#SPJ8

Explanation:

It should be decreasing, and the potential energy increasing, since Law of Conversation of Energy, right?

Also, if you think about what happens when it goes down, it loses potential and gains kinetic, so maybe the opposite should happen when it goes up.

Answer:

it's decreasing

Explanation:

as you know a roller coaster loses speed as it ascends and the kinetic energy is proportional to the speed according to it's formula

KE=(mv^2)/2

where m is the mass and v is the speed