The density of mercury is 13.6 g/mL What is the mass in kilograms of 5L of mercury?

Answer:

C

Explanation:

If you add salt to water, its boiling point increases.

When calcium chloride is added to a sample of water, the boiling point will increase. Option A is correct.

The boiling point of the liquid is the temperature at which the vapor pressure of a given liquid equals the external pressure or atmospheric pressure surrounding the given liquid.

The calcium chloride is added to a sample of water it releases the some amount heat and become exothermic and the boiling point will increase due to the reaction of water and calcium chloride.

Therefore, when calcium chloride is added to a sample of water, the boiling point will increase. Option A is correct.

Learn more about boiling point, here:

https://brainly.com/question/16945842

#SPJ2

The value of Ksp for Ba\(CrO_4\) is approximately 2.49 × \(10^{-16 }\)at 25 °C.

\(BaCrO_4\)(s) ↔ \(Ba_2\)+(aq) + \(CrO_42\)-(aq)

The equilibrium expression for the solubility product of BaCrO4 is:

Ksp = [\(Ba_2\)+][\(CrO_42\)-]

We can use the given solubility  \(CrO_42\) to calculate the concentrations of \(Ba_2\)+ and \(CrO_42\)- at equilibrium:

\(BaCrO_4\)(s) ↔ \(Ba_2\)+(aq) + \(CrO_42\)-(aq)

Initial: 0 0 0

Equilibrium: x x 3.7x\(10^{-6}\) mol/L

Since 1 L of water contains 3.7 mg of BaCrO4 at equilibrium, the molar solubility of BaCrO4 is:

molar solubility = (3.7 mg / BaCrO4) / (molar mass of BaCrO4)

= (3.7 × \(10^{-6 }\)mol / L) / (233.39 g / mol)

≈ 1.58 × \(10^{-8}\) M

Therefore, at equilibrium, [\(Ba_2\)+] = [\(CrO_4\)2-] = x = 1.58 × \(10^{-8}\) M.

Substituting these values into the equilibrium expression for Ksp:

Ksp = [\(Ba_2\)+][\(CrO_4\)2-] = (1.58 × \(10^{-8}\))² ≈ 2.49 × \(10^{-16}\)

Ksp, or the solubility product constant, is a measure of the solubility of a sparingly soluble salt in a solvent. It is a constant value that describes the equilibrium between the solid salt and its ions in the solution. Ksp is the product of the concentrations of the ions raised to the power of their stoichiometric coefficients, each raised to the power of their respective coefficients.

Ksp is a measure of the maximum amount of salt that can be dissolved in a solvent at a given temperature and is dependent on the temperature, pressure, and ionic strength of the solution. If the ion concentration exceeds the Ksp, then the salt will precipitate out of the solution until a new equilibrium is reached.

To learn more about Ksp visit here:

brainly.com/question/27132799

#SPJ4

Answer:

In space ( the sun and it's atmospheres )

Answer:

2 moles of nitrogen, 8 moles of hydrogen, 1 mole of sulfur

Explanation: i took the test and got it right

The number of moles for each element in one mole of (NH₄)₂S are:

d. 2 moles of nitrogen, 8 moles of hydrogen, 1 mole of sulfur

The number of moles can be identified by dividing the given mass by molar mass.

In one mole of (NH₄)₂S there are moles of each participating element i.e. nitrogen, oxygen, hydrogen, and sulfur.

In this molecule, there are 2 moles of nitrogen, 8 moles of hydrogen, and one mole of sulfur.

Thus, option d is correct.

Find more information about One mole here:

brainly.com/question/1358482

Answer: It could burn or freeze anything

Explanation:

Answer:

The carcinogen (U.V.) helps to stabilize the formation of clouds and maintain life in ecosystem.

If drastic changes were made to the radiation of sun, it will lead to ecological imbalance such as changes in O3 layer, etc and surely, the last day (D-day, what we majorly call) will come!

Answer:

1 mole H2O has 6.02 × 10^23 molecules

Explanation:

Answer:

plant cell is ur answer for this question

Bethanechol mimics the neurotransmitter acetylcholine.

Bethanechol is a medication used to stimulate motility and increase secretions in patients with decreased vagal nerve function, such as after surgery. It is a synthetic cholinergic agonist that acts by mimicking the effects of acetylcholine, the neurotransmitter released by the vagal nerve.

Acetylcholine is an important neurotransmitter in the parasympathetic nervous system, which is responsible for regulating various bodily functions, including digestion and smooth muscle contraction. It acts on specific receptors called cholinergic receptors, activating them and triggering the desired physiological responses.

By mimicking acetylcholine, bethanechol can bind to and activate cholinergic receptors, particularly muscarinic receptors located in various tissues and organs. This activation leads to increased smooth muscle contractions, including those involved in gastrointestinal motility, and enhanced secretion of fluids and mucus in the digestive and respiratory systems.

Overall, bethanechol's ability to mimic acetylcholine allows it to compensate for decreased vagal nerve function and stimulate the parasympathetic responses needed for improved motility and secretion in post-surgical patients or individuals with impaired vagal nerve activity.

To learn more about acetylcholine, here

https://brainly.com/question/29855206

#SPJ4

it is asked to analyze data related to the carbohydrate molecules and their chemical potential energy. The molecules contain 100 units of chemical potential energy. The question is also asking to propose an account of these 100 units as a result of the chemical reaction.

Carbohydrates are macromolecules that contain carbon, hydrogen, and oxygen. They are important biological molecules as they serve as the primary source of energy for most living organisms. The process of breaking down carbohydrates in order to release their stored energy is called cellular respiration. The energy that is stored within carbohydrates is referred to as chemical potential energy. When carbohydrates undergo chemical reactions, this energy is released in the form of ATP, which is then used to power the various cellular processes that occur within living organisms.

For instance, the ATP that is produced during cellular respiration is used to drive muscle contraction, protein synthesis, and the transport of molecules across cell membranes.  In this case, the 100 units of chemical potential energy that are stored within the carbohydrate molecules are a result of the chemical reaction that occurred during the process of photosynthesis. During this process, energy from the sun is used to convert carbon dioxide and water into glucose and oxygen. This glucose is then stored within the plant as a carbohydrate molecule. When the plant requires energy, the stored glucose is broken down through cellular respiration, and the energy that is released is used to power cellular processes. Thus, the 100 units of chemical potential energy that are contained within the carbohydrate molecules are a result of the chemical reactions that occurred during the process of photosynthesis.

To know more about chemical  Visit;

https://brainly.com/question/29240183

#SPJ11

Answer:

1. F, H, E

2. A, D, I

3. G

4. E, B, H

5. C

Explanation:

With the formula NH3, ammonia is a nitrogen and hydrogen inorganic chemical.

Thus, Ammonia, the simplest pnictogen hydride and a stable binary hydride, is a colourless gas with a strong, pungent odour. It contributes considerably to the nutritional demands of terrestrial creatures by serving as a precursor to 45% of the world's food and fertilizers.

Biologically, it is a common nitrogenous waste, especially among aquatic animals.

The production of fertilizers in a variety of shapes and compositions, including urea and diammonium phosphate, uses about 70% of ammonia.

Thus, With the formula NH3, ammonia is a nitrogen and hydrogen inorganic chemical.

Learn more about Ammonia, refer to the link:

https://brainly.com/question/31525313

#SPJ4

The room contains no thermal energy as there is no change in temperature.

The room's thermal energy can be calculated using the formula:

Thermal Energy = mass x specific heat capacity x change in temperature

First, we need to find the mass of air in the room. This can be calculated using the formula:

mass = density x volume

The density of air at 20∘C is approximately 1.204 kg/m³. Therefore, the mass of air in the room is:

mass = 1.204 kg/m³ x 6.30 m x 8.50 m x 2.80 m
mass = 181.2 kg

Next, we need to find the specific heat capacity of air. At constant pressure, the specific heat capacity of air is approximately 1.005 kJ/kg⋅K.

Finally, we can calculate the change in temperature of the air in the room. Assuming that the initial temperature of the air was also 20∘C, there is no change in temperature and the change in temperature is 0∘C.

Therefore, the room's thermal energy is:

Thermal Energy = mass x specific heat capacity x change in temperature
Thermal Energy = 181.2 kg x 1.005 kJ/kg⋅K x 0∘C
Thermal Energy = 0 kJ

Learn More  about thermal energy here :-

https://brainly.com/question/18989562

#SPJ11

Answer:

The elements in this family are fluorine, chlorine, bromine, iodine, and astatine. Halogens have 7 valence electrons, which explains why they are the most active non-metals.

Explanation:

Answer:

Selenium

Explanation:

Answer:

457.04 g

Explanation:

Molar mass of C8H18 is 8(12.01) + 18(1.01) = 114.26 g/mol

mass of 4 mol = 4(114.26) = 457.04 g

Answer:

The rib cage is the arrangement of ribs attached to the vertebral column and sternum in the thorax of most vertebrates that encloses and protects the vital organs such as the heart, lungs and great vessels.

Hope that helps. x

Before administering nitrous oxide/oxygen sedation, the patient is usually given a detailed explanation of the procedure, including its risks and benefits.

They are also required to sign an informed consent form. The dentist or dental hygienist administering the sedation will check the patient's vital signs and ensure that they are in good health to receive the sedation.

During the procedure, the patient is given a nasal mask that delivers a mix of nitrous oxide and oxygen.

After the procedure, the patient is usually monitored until the effects of the sedation have worn off. The patient is advised not to drive or operate heavy machinery for at least 24 hours after the procedure.

It is also recommended to avoid consuming alcohol or taking medications that may interact with the sedative for a certain period after the procedure.

To know more about oxygen. please visit.....

brainly.com/question/31842461

#SPJ11

Answer: you go down by your key bad and use those arrows

Explanation:

Answer:

B

Explanation:

The warmer the water, the more space it takes up, and the lower its density.

Answer:

The density decreases

Explanation:

The colder the water the closer the particles move together making it denser. The hotter the water the more the particles slow down and move away from each other making the water less dense.

Speed you will have to go from Chicago to Hackensack in 260 hours is 4.9Km/hr.

Given,

Time = 260 hours

distance between Chicago to Hackensack is 1277 km

So speed = 1277/ 260 = 4.9 Km/ hr

Therefore, speed required to go from Chicago to Hackensack in 260 hours is 4.9 Km/ hr.

Learn more about speed here:

https://brainly.com/question/13262646

#SPJ9

Quality single-case research designs should have a minimum of three demonstrations of effect.

Single-case research design (SCRD) is a research method that involves studying the behavior of a single participant. SCRD has several unique features that distinguish it from other types of research, and the design is suited for studying behavior in its natural context.

Quality SCRDs should have at least three demonstrations of effect (i.e., changes in the behavior of interest that are reliably linked to a specific intervention) in order to support causal inferences.

Each demonstration of effect must be replicated and analyzed statistically, and the demonstrations of effect must be separated by a return to baseline or another experimental condition that permits the investigator to demonstrate that the change in the behavior of interest is attributable to the intervention and not to extraneous factors.

SCRD is a powerful and flexible research technique that can be used to study behavior in a variety of settings and populations.

The application of SCRD can lead to a better understanding of the causes and maintenance of behavior and can guide the development of effective interventions for individuals with behavioral difficulties.

Hence, Quality single-case research designs should have a minimum of three demonstrations of effect.

Read more about Research Designs at https://brainly.com/question/32282840

#SPJ11

Substances called indicators are those whose solutions change color as the pH changes. We refer to these as acid-base indicators.

The conjugate base or acid versions of these typically weak acids or bases have various hues because of variations in their absorption spectra.

The H+ ion's dissociation from the pH indicator itself is what changes the hue of the indicator. Remember that weak acids in addition to natural colours are used as pH indicators. The solution changes hue as a result of the weak acid indicator dissociating.

As indicators, phenolphthalein and methyl orange are used. Methyl orange produces a red color in acidic solutions but a yellow color in basic solutions. Phenolphthalein is colorless in acidic solution but turns pink in basic solution.

For more information on indicators kindly visit to

https://brainly.com/question/29016702

#SPJ4

Answer:

Liver

Explanation:

Some of these intermediate metabolites can have harmful effects on the body. Most of the ethanol in the body is broken down in the liver by an enzyme called alcohol dehydrogenase (ADH), which transforms ethanol into a toxic compound called acetaldehyde (CH3CHO), a known carcinogen.

Answer:

density = 4.763pounds per liter

Explanation:

1g/cm³ = 2.205pounds per liter

2.16g/cm³ = (unknown)pounds per liter

(unknown)pounds per liter = 2.205 x 2.16 = 4.763

density = 4.763pounds per liter

Answer:

non independantly

Explanation:

Answer:

I think it's B). pH is close to 7

The compound:

Can be called as Tungsten (V) hydroxide.

Answer:

i can send u all of the bio stuff i have maybe it will help

Explanation:

Thallium has a high level of toxicity. Thallium is extremely poisonous and can be fatal if ingested or inhaled in large quantities. It can be absorbed through the skin, and prolonged exposure to small amounts of the element can result in serious health issues. Its toxicity has resulted in a reduction in its use.

Thallium is a chemical element that has the symbol Tl and the atomic number 81. Thallium salts are capable of producing a blue flame, but thallium is not used in this experiment. The properties of thallium are as follows:

Physical properties:- Thallium is a metal that has a bright silver color. It has the following characteristics:

• Melting point: 304°C

• Boiling point: 1,473°C

• Density: 11.85 grams per cubic centimeter

• It is a soft metal.

Chemical properties:- Thallium is highly reactive and is capable of combining with other elements to form compounds. It has a number of oxidation states, including +1, +2, and +3. It reacts easily with air and water, and when heated, it emits a green flame.

For more question on Thallium click on

https://brainly.com/question/31007911

#SPJ11

Answer:

To remember the order of taxa in biology (Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species):

"Dear King Philip Came Over For Good Soup"

Do Kings Play Chess On Fine Green Silk?

Do Kindly Place Cover On Fresh Green Spring Vegetables

Darn Kernel Panics Crash Our Family Game System

Do Keep Pond Clean Or Froggy Gets Sick