A waste contains 100 mg/L ethylene glycol (C_{2}H_{6}O_{2}) and 50 mg/LNH_{3}-N. Determine the theoretical carbonaceous oxygen demand and the theoretical nitrogenous oxygen demand of the waste. (The answers are carbanaceous OD=107 mg/L and nitrogenous OD= 228 mg/L just need to know how to get there)

Insoluble- not capable of being dissolved

Solvent - the liquid in the solution

Soluble- capable of being dissolved

Aqueous- any solution with water as the solvent

Dissolve - to break up in molecular or ionic parts to form a solution

Solute- the substance that does the dissolving

Explanation: i  hope this helps you

Answer:

48 N

Explanation:

f=ma (from Newton's second law of motion)

596 J of energy has been lost from the system when 0.344 mL of Br₂ has been consumed.

The electrical work done can be calculated using the formula:

W = -nFE

where W is the electrical work done, n is the number of moles of electrons transferred, F is the Faraday constant (96,485 C/mol), and E is the cell potential in volts.

First, we need to calculate the number of moles of electrons transferred by the reaction. From the balanced redox reaction, we can see that 1 mole of Br₂ reacts with 2 moles of electrons:

Br2(l) + 2 e⁻ → 2 Br⁻(aq)

Therefore, the number of moles of electrons transferred is:

Now we can calculate the electrical work done:

The negative sign indicates that the electrical work done is negative, which means that the system has lost energy to the surroundings. Therefore, 596 J of energy has been lost from the system when 0.344 mL of Br₂ has been consumed.

To know more about the Electrical, here

https://brainly.com/question/16398309

#SPJ1

Answer:

Melting points are often used to characterize organic and inorganic crystalline compounds and to ascertain their purity. Pure substances melt at a sharp, highly-defined temperature (very small temperature range of 0.5 – 1 °C) whereas impure, contaminated substances generally exhibit a large melting interval.

Explanation:

I hoped this helps a bit! ^^

☁️☁️☁️☁️☁️☁️☁️☁️☁️☁️

One grain of calcium carbonate, or 64.8 milligrams, is dissolved in one US gallon of water to represent one grain per gallon (gpg), a measure of water hardness (3.785412 L).

To Learn more About grain per gallon refer to:

https://brainly.com/question/2350304

#SPJ1

Answer:

B; 229g of Zn

Explanation:

To convert mol of Zn, we must find the atomic mass of Zn. This is 65.38.

Multiply 3.5 mol of zn by 65.38.

3.50 mol of Zn*65.38g = 228.83g of Zn

Therefore, the mass = 229g of Zn

The generic equation Base + H₂O + HBase + OH⁻ may be used to explain the pH of solutions containing NH₃ or NaHCOO. Option 1 and 5 are correct.

The generic equation Base + H₂O + HBase + OH⁻ represents the autoionization of water, which occurs in all aqueous solutions. It involves the reaction between a weak base (B) and water to form the conjugate acid (BH⁺) and hydroxide ions (OH⁻):

B + H₂O ⇌ BH⁺ + OH⁻

Therefore, the equation is not specific to any particular salt, and it cannot be used to account for the pH of a specific salt.

However, some salts can affect the pH of an aqueous solution due to the hydrolysis reaction that occurs when they dissolve in water. Among the given salts, NH₃ and NaHCOO are basic and can cause the solution to have a higher pH, while KCIO₃, ZnCl₂, and BaBr₂ are neutral salts and do not affect the pH significantly.

Hence, 1.5. NH₃, NaHCOO are the correct options.

To know more about autoionization here

https://brainly.com/question/14896105

#SPJ4

The empirical formula of a compound gives the simplest whole-number ratio of atoms present in the compound. To determine the empirical formula of caffeine, we need to calculate the moles of each element and then find the ratio between them. First, let's find the moles of each element by dividing their masses by their respective molar masses. The molar mass of carbon (C) is 12.01 g/mol, hydrogen (H) is 1.01 g/mol, nitrogen (N) is 14.01 g/mol, and oxygen (O) is 16.00 g/mol.

Moles of carbon (C):

Moles of nitrogen (N):

To do this, we divide each mole value by the smallest mole value (0.154 mol in this case):

Caffeine, or more popularly caffeine, is a xanthine alkaloid compound in the form of crystals and tastes bitter which works as a psychoactive stimulant and mild diuretic. Caffeine was discovered by a German chemist, Friedrich Ferdinand Runge, in 1819. Caffeine can suppress appetite, so it can help control weight. In addition, caffeine can also stimulate thermogenesis, which is the process of converting food into heat and energy by the body. In addition, caffeine can also help improve performance while exercising. Caffeine in coffee can stimulate the nerves and brain, making a person unable to sleep, causing disturbed night sleep (insomnia), feeling excessively refreshed, which over time can shorten sleep time and prevent the body from sleep well. This can cause sleep disturbances such as insomnia.

Learn More About Caffeine at https://brainly.com/question/26670237

#SPJ11

This is defined as a variant form of a gene. We were told that allele for  white wool is dominant to the allele for black wool and two heterozygous sheep mated.

When we cross Ww and Ww we get WW, Ww, Ww, ww. Since white is dominant then the percentage is 3/4 = 75 percent.

Read more about Allele here https://brainly.com/question/3452155

First, we have to calculate the molecular weights of each molecule:

Then, we have to calculate the number of grams of water. We can calculate them because the process of evaporation lets us know the water amount that was retired:

Then, we're gonna convert the grams of sodium carbonate alone (30.2 g) and the grams of water to moles:

It means that the mole relation is 1:1 approx, as it is the same amount for both. Then, the formula is going to be:

It means that the answer is A.

The main reservoirs of the carbon cycle are the atmosphere, oceans, land (including vegetation and soils), and fossil fuels. In these reservoirs, carbon exists in both inorganic and organic forms.

The inorganic carbon cycle involves the exchange of carbon dioxide (CO2) between the atmosphere and oceans through processes like photosynthesis and respiration.

Organic carbon, on the other hand, is found in living organisms, dead organic matter, and soil organic matter. It is cycled through processes such as decomposition and consumption by organisms. The interactions between the inorganic and organic carbon cycles occur primarily in the biosphere, where photosynthesis converts inorganic carbon into organic carbon compounds. While inorganic carbon is primarily in the form of CO2, organic carbon is present in complex organic molecules. Both forms of carbon play crucial roles in energy transfer, nutrient cycling, and climate regulation.

Learn more about Carbon Cycle

brainly.com/question/13729951

#SPJ11

The evidence that indicated that the map made near Lake Tapps in Washington was a massive lahar from Mt. Rainier and not an old glacier: Whole logs mixed in with the rocks, Clay-sized particles and An abundance of snow and ice

The following evidence indicated that the map made near Lake Tapps in Washington was a massive lahar from Mt. Rainier and not an old glacier:

Whole logs mixed in with the rocks: The presence of whole logs mixed in with the rocks suggests a rapid and powerful flow, characteristic of a lahar, rather than the slow movement associated with glaciers.

Clay-sized particles: The presence of clay-sized particles is often associated with lahars, as they can be easily transported by the flowing volcanic material.

An abundance of snow and ice: The presence of snow and ice is indicative of a recent event, as glaciers tend to accumulate and retain snow and ice over time. In the case of a lahar, the presence of snow and ice suggests a more recent deposition.

Learn more about Evidence, here:

https://brainly.com/question/31812026

#SPJ4

The concentration of P in ppb in the initial groundwater sample was 31,250 ppb.

To determine the concentration of P in the groundwater sample, we first need to calculate the concentration of P in the diethyl ether. From the calibration curve, we can observe that the peak area for the sample is 31,250, which corresponds to a toluene concentration of 5.0 µg/ml.

Next, we consider the extraction efficiency of the pollutant, which is 95%. Therefore, the concentration of P in the diethyl ether is:

(5.0 µg/ml) * (0.95) = 4.75 µg/ml.

Since we used 25 mL of diethyl ether to extract the pollutant from a 10 mL groundwater sample, we can calculate the concentration of P in the groundwater sample as follows:

(4.75 µg/ml) * (25 mL / 10 mL) = 11.875 µg/ml.

Finally, we convert the concentration to ppb (parts per billion) by multiplying by 1000:

11.875 µg/ml * 1000 = 11,875 ppb.

Therefore, the concentration of P in ppb in the initial groundwater sample is 31,250 ppb.

To know more about diethyl ether, visit:

https://brainly.com/question/32295282

#SPJ11

Answer:

3

Explanation:

Phosphorous valence is 5. so to get stable electronic configuration it has to gain 3 more electrons to its outer shell

Answer:

3

Explanation:

luckily, every phosphorus atom is looking to gain 3 electrons. It's a perfect match. But something to notice though, look how they have a bond with six electrons. That is called triple bond.

Answer:

123.5 kPa

Explanation:

P2=P1T2/T1

You can check this by knowing that P and T at constant V have a proportional relationship. Hence, this is correct.

Heavy rain fall most commonly causes shoals to form or change shape making depressions and bars in the sand.

Wave shoaling occurs when surface waves slow down, their wave height rises, and the space between waves narrows as they approach shallow water, like a beach. The waves are said to shoal because of this action, which is known as shoaling.

The shoal, a buildup of silt that might be hazardous to ships in a river channel or on a continental shelf.

Conventionally, it is assumed that the continental shelf is less than 10 metres below sea level at low tide. Shoals are created mostly by the same processes that result in offshore bars.

Thus, Heavy rain fall causes shoals to produce and change shape creating depressions and bars in the sand.

To learn more about the shoal, follow the link;

https://brainly.com/question/4350298

#SPJ6

Answer:

20

Explanation:

In Linear molecular geometry, the bond angle is 90°, in trigonal pyramidal geometry, bond angle is 107°, in trigonal planar geometry, bond angle is 120° and in tetrahedral, the bond angle is 109.5°.

In the linear geometry, the central atom has two side atoms attached which are at and bond angle of 180°.

In trigonal pyramidal geometry, the central atom has four side atoms which resembles a pyramid like structure. The bond angle between the two consecutive side atoms is 107°.

In trigonal planar geometry, three atoms are attached on the sides of central atom. The bond angle between these side atom is equal and of 120°.

In Tetrahedral geometry, the central atom and the side atoms makes a triangular prism like structure, the bond angle between side atoms is 109.5°.

To know more about Molecular Geometry, visit,

https://brainly.com/question/19354582

#SPJ4

Start by setting up your materials you would put one plant in mulch and one without. After 2-3 weeks of proper care of the plants you record your findings, did the plant grow more without without the mulch?

Answer:

A.ns .is d ok I think it was very much helpful to you

Compounding personnel should contact the supplier to follow up on the delivery of the sterile isopropyl alcohol (IPA) bottles that did not arrive in the supply order. The personnel should request an estimated time of arrival and make sure to provide the exact details of the order.

If the sterile isopropyl alcohol (IPA) bottles did not arrive in the supply order, the compounding personnel should take the following steps:

It is important for the compounding personnel to take swift action in this situation to ensure that the necessary supplies are obtained and that compounding activities can continue without disruption.

know more about isopropyl alcohol here

https://brainly.com/question/14896958#

#SPJ11

Answer:

Three half-lives

Explanation:

12.5% is one-eighth. One eighth is the cube of one half, so it would take three half-lives to reduce a reactant's concentration to 12.5%

Three half-lives are required for the concentration of reactant to decrease to 12. 5% of its original value.

Half -life of a substance is defined as the time which is required for half of the quantity of a radioactive substance to get decayed.It is a term which is used in nuclear chemistry for describing how quickly unstable atoms undergo radioactive decay into other nuclear species by emitting particles or the time which is required for number of disintegrations per second of radioactive material to decrease by one half of its initial value.

In the given example 12.5 % is 1/8  and three times 1/2 that is 1/2×1/2×1/2=1/8 , hence  three half lives are  required for the concentration of reactant to decrease to 12. 5% of its original value.

Learn more about half-life,here:

https://brainly.com/question/24710827

#SPJ2

1) Convert grams to moles

The molar mass of Cu is 63.546 g/mol.

0.007553 mol of Cu is equal to 7.6*10^-3 mol of Cu.

.

Answer:

An object's thermal energy is dependent upon its temperature and mass. The higher the temperature of a given quantity of a substance, more is its thermal energy. Similarly, for the same temperature, higher mass of a substance will contain more thermal energy

Answer:

Look at the screenshot below.

Those are your answers!

Good Luck.

Explanation:

The number of valence electrons for neutral atoms is the same as the number of the atom's main group.A periodic table element's column can be used to determine its main group number.For instance, carbon, which belongs to group 4, has four valence electrons.

Use the periodic table to identify the number of valence electrons available for bonding for each of the following elements?

       To learn more about periodic table refer

       https://brainly.com/question/25916838

        #SPJ2