to avoid the problems associated with mercury (which is toxic), thermometers sometimes use alcohol instead. would it be practical to use alcohol in barometers instead of mercury? why or why not?
Answers
Two or more than two atoms with different physical or chemical properties can not combine together to form an element. Therefore, it is not practical to use alcohol instead of mercury.
What is element?Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same.
To avoid the problems associated with mercury (which is toxic), thermometers sometimes use alcohol instead. No, it is not practical to use alcohol instead of mercury because alcohol is less denser than mercury due to this there can be variation in the reading of barometer.
Therefore, it is not practical to use alcohol instead of mercury.
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Related Questions
As the number of hydroxyl groups in a molecule __________, the solubility of the molecule increases. as the number of carbons in a molecule ___________, the solubility decreases.
Answers
The correct answer is increases, increases.
Solid, liquid, and gas solubility:
Changes in pressure hardly ever affect the solubility of solids or liquids. However, gases are highly reliant on the system's pressure. Liquids and gases combine to generate solutions.
The solubility of the molecule increases as the number of hydroxyl groups increases since there will be more hydrogen bonding as a result.
As the number of carbon atoms rises, alcohol's solubility decreases since the carbon chain is hydrophobic by nature. The hydrophobic group expands as the molecule's polarity decreases. As a molecule's polarity rises, its solubility gradually declines.
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Add 2 teaspoons of baking soda and 2 teaspoons of citric acid to the foam cup. Add the half cup of water to the cup and stir. What is the temperature?
Answers
Answer:
Test for carbon dioxide gas.
The reaction between baking soda and citric acid will form sodium ions, citric acid ions, carbon dioxide gas, and water. So all you have to do is add the gas produced (by gas displacement method or something) and test whether the gas is carbon dioxide, with lime water or other methods like hydrogencarbonate indicator. Hope this helped!
Explanation:
Answer:
depends on amount, but the reaction's endothermic (meaning its cold, absorbs heat from surroundings)
I hope it helps.
6.58 grams of sulfur trioxide and 16.4 grams of water react to form H2SO4. identify the limiting reagent and the excess. how many grams of the excess is left over .
what mass of sulfuric acid is produced?
Answers
1. The limiting reagent is sulfur trioxide, SO₃ and the excess reagent is water, H₂O
2. The mass of the excess reagent leftover is 14.92 g
3. The mass of sulfuric acid, H₂SO₄ is produced is 8.06 g
1. How do i determine the limiting and the excess reagent?The limiting and excess reagent can be obtained as follow:
SO₃ + H₂O -> H₂SO₄
Molar mass of SO₃ = 80 g/molMass of SO₃ from the balanced equation = 1 × 80 = 80 g Molar mass of H₂O = 18 g/molMass of H₂O from the balanced equation = 1 × 18 = 18 gFrom the balanced equation above,
80 g of SO₃ reacted with 18 g of H₂O
Therefore,
6.58 g of SO₃ will react with = (6.58 × 18) / 80 = 1.48 g of H₂O
From the above calculation, we can see that only 1.48 g of H₂O out of 16.4 g is needed to react completely with 6.58 g SO₃.
Thus, the limiting reagent is SO₃ and the excess reagent is H₂O
2. How do i determine the mass of the excess reagent leftover?The mass of the excess reagent leftover can be obtained as follow:
Mass of excess reagent, H₂O given = 16.4 gMass of excess reagent, H₂O that reacted = 1.48 gMass of excess reagent, H₂O leftover =?Mass of excess reagent, H₂O leftover = Mass given - mass reacted
Mass of excess reagent, H₂O leftover = 16.4 - 1.48
Mass of excess reagent, H₂O leftover = 14.92 g
3. How do i determine the mass of H₂SO₄ produced?The mass of H₂SO₄ produced can be obtained as illustrated below:
SO₃ + H₂O -> H₂SO₄
Molar mass of SO₃ = 80 g/molMass of SO₃ from the balanced equation = 1 × 80 = 80 g Molar mass of H₂SO₄ = 98 g/molMass of H₂SO₄ from the balanced equation = 1 × 98 = 98 gFrom the balanced equation above,
80 g of SO₃ reacted to produce 98 g of H₂SO₄
Therefore,
6.58 g of SO₃ will react to produce = (6.58 × 98) / 80 = 8.06 g of H₂SO₄
Thus, the mass of H₂SO₄ produced is 8.06 g
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How many seismograph stations are needed to use the S-P-method? Why?
Answers
a minimum of three seismograph stations are needed to find an earthquake's epicenter using the S-P time method.
Scientists use triangulation to find the epicenter of an earthquake. When seismic data is collected from at least three different locations, it can be used to determine the epicenter by where it intersects. ... Knowing this helps them calculate the distance from the epicenter to each seismograph.
Explanation:
If 50 grams of CaCl2 are dissolved in 100g of water at 40°C, the solution is:
O unsaturated
O saturated
O supersaturated
Answers
Answer:
sog-20g=30g
Explanation:
A-10
A-6
Group mL A-8 mL mL A-2mL
1 10.6 8 6.2 2.1
2
9
9 7
N
3
11
9
7
3
4
10.4
8.4
6.2
2.1
5
10.39
8.39
6.3
2.3
6
11
9
7
3
Answers
Answer: good
Explanation:
tyuk
What is the change in oxidation state in the reaction
2H2S +3O2---- 2H2O + 2SO2
Answers
Answer: In the reaction 2H2S + 3O2 → 2H2O + 2SO2, the oxidation state of sulfur changes from -2 in H2S to +4 in SO2. This means that sulfur is oxidized, and oxygen is reduced.
Explanation:
The oxidation state of an element is the number of electrons that an atom loses or gains when it forms a chemical bond. In H2S, the sulfur atom has an oxidation state of -2 because it has lost two electrons to the hydrogen atoms. In SO2, the sulfur atom has an oxidation state of +4 because it has gained four electrons from the oxygen atoms.
The oxidation state of oxygen changes from 0 in O2 to -2 in H2O and SO2. This means that oxygen is reduced, and sulfur is oxidized. In O2, the oxygen atoms are not bonded to any other atoms, so they have an oxidation state of 0. In H2O and SO2, the oxygen atoms have an oxidation state of -2 because they have gained two electrons from the hydrogen and sulfur atoms, respectively.
Element Oxidation state in H2S Oxidation state in SO2 Oxidation state in H2O
Sulfur -2 +4 +4
Oxygen 0 -2 -2
Hydrogen +1 +1 +1
Mole Conversion: How many atoms are in 0.830 moles of gold?
Answers
Answer:
4.99 × 10²³ atomsExplanation:
The number of atoms of gold can be found by using the formula
N = n × Lwhere n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
N = 0.83 × 6.02 × 10²³
We have the final answer as
4.99 × 10²³ atomsHope this helps you
HURRY I WILL GIVE BRAINLIEST Which would be a common-sense practice in a lab environment? keeping quiet about accidents washing hands before the lab taking a water bottle to drink scratching one’s face during the lab
Answers
Answer:
washing your hands before the lab
if the concentration of nacl is 4.86 m, when it begins to crystallize out of solution, then what is the ksp?
Answers
If the concentration of NaCl is 4.86 m, when it begins to crystallize out of solution, then is the ksp is 23.61
the reaction is given as:
NaCl ---> Na⁺ + Cl⁻
4.86 4.86
The Ksp for the following is given as :
ksp = [Na⁺] [Cl⁻]
ksp = 4.86 × 4.86
ksp = 23.61
The solubility product constant ksp is the type of equilibrium constant. the solubility product constant ksp increases with increase in temperature with increase in the solubility.
Thus, If the concentration of NaCl is 4.86 m, when it begins to crystallize out of solution, then is the ksp is 23.61 .
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if 0.00901 mol neon gas at a particular temperature and pressure occupies a volume of 242 ml, what volume would 0.00703 mol neon occupy under the same conditions?
Answers
The volume of 0.00703 mol of neon gas under the same temperature and pressure as 0.00901 mol of neon gas occupying 242 ml is 188 ml.
According to the Ideal Gas Law, PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin.
Assuming that the temperature and pressure are constant, we can set up a proportion to find the volume of 0.00703 mol of neon gas:
0.00901 mol neon / 242 ml = 0.00703 mol neon / x
Solving for x, we get:
x = (0.00703 mol neon * 242 ml) / 0.00901 mol neon
x = 188 ml
Therefore, the volume of 0.00703 mol of neon gas under the same conditions is 188 ml.
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Which of the following is the key intermediate in the Markovnikov addition of HBr to 1-butene? A) CH.CH CHCH,Br B) CHCHC-CH, C) Сн,сненен, D) сH,CH,CHCH, Br
Answers
The key intermediate in the Markovnikov addition of HBr to 1-butene is option D, which is сH,CH,CHCH, Br.
In this reaction, the HBr molecule adds to the carbon atom that has the least number of hydrogen atoms attached to it, following the Markovnikov rule. This leads to the formation of a carbocation intermediate, which is stabilized by neighboring carbon atoms.
Therefore, the correct intermediate is CH3CH2CH+(CH2Br), which corresponds to option D (сH,CH,CHCH, Br). This is because the carbocation's positive charge is on the secondary carbon, leading to a more stable intermediate and following Markovnikov's rule.
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Can someone help me please
Answers
Answer:
13) Carbon Dioxide and water
Explanation:
The fact is that during photosynthesis, Carbon Dioxide is needed by green plants to manufacture their food and water is also needed but also chloroplast which contained chlorophyll is also needed
hence, the options are somehow confusing
14) perhaps it should be all of the above
caco3 if a 20 gram sample of caco3 is put into a 10l contanier and heated to 1000c find the percent of the caco3
Answers
Given hard water is equivalent to mg of CaCO3 in 1L (1000ml).Water's overall hardness is 1000 V2/V1 mg/l, or 1000 V2/V1 ppm.
When heated, 20 g if CaCO3 was placed in a 10 l flask.30% of the CaCO3 remained unreacted in equilibrium when 20g of CaCO3 were added to a 10-liter flask and heated to 800.
Why is CACO3 used to calculate water hardness?Because calcium carbonate has a molecular weight of 100 g/mol and is easier to compute when the value is expressed in terms of 100, the water's hardness is typically reported in parts per million (ppm) and evaluated in terms or calcium carbonate.
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If carbon dioxide levels drop too low, the person automatically breathes:
a. Slower and less deeply.
b. Rapidly and deeply.
Answers
If carbon dioxide levels drop too low, the person automatically breathes: a. Slower and less deeply.
When the carbon dioxide levels in the blood are low, the body responds by slowing down and decreasing the depth of breathing to retain more carbon dioxide, thereby maintaining a balanced state.
Hence, If carbon dioxide levels drop too low, the person automatically breathes slower and less deeply.
Your body's trillions of cells use the food molecules they metabolise to produce energy. Carbon dioxide (CO2) is a byproduct of this process. Exhaling allows your lungs to clear your body of extra CO2. However, a tiny amount is still present in your blood and is crucial for preserving the proper acid-base balance. Numerous illnesses, some relatively benign and others more serious, result in low blood CO2 levels.
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Hexachlorobenzene is contaminating your local well water. The concentration in the ground water is 3.4 mg/L. The soil organic content is 0.3% and pore water occupies 55% of aquifer volume. Estimate carbon-normalized sorption coefficient, sorption coefficient and mass of organic contaminant per mass of sorbent.
Answers
To estimate the carbon-normalized sorption coefficient, sorption coefficient, and mass of organic contaminant per mass of sorbent, we need additional information such as the organic carbon partition coefficient (Koc) and the bulk density of the soil.
Carbon-Normalized Sorption Coefficient (Koc):
The carbon-normalized sorption coefficient represents the sorption capacity of the sorbent material for the organic contaminant. It is calculated by dividing the sorption coefficient (Kd) by the organic carbon content in the soil.
Koc = Kd / % organic carbon
Sorption Coefficient (Kd):
The sorption coefficient represents the ratio of the concentration of the contaminant adsorbed onto the sorbent material to the concentration in the aqueous phase.
Kd = (mass of contaminant sorbed / mass of sorbent) / (concentration of contaminant in water)
Mass of Organic Contaminant per Mass of Sorbent:
To calculate the mass of organic contaminant per mass of sorbent, we need to know the mass of the contaminant adsorbed onto the sorbent material and the mass of the sorbent itself.
Mass of organic contaminant per mass of sorbent = mass of contaminant sorbed / mass of sorbent
To perform these calculations, we need the organic carbon partition coefficient (Koc) and the bulk density of the soil. With this information, we can estimate the sorption characteristics of hexachlorobenzene in the given scenario.
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halogens are not the only atoms or groups that can be replaced by nucleophilic aromatic substitution as the following reaction shows. h512p601 what is the leaving group in this reaction? (formal charges have been intentionally omitted.) h512p60a h512p60c h512p60b
Answers
NO2 exists as O=N+-O, as a nucleophilic leaving group it should be in form of O=N-O¯. Hence, (a) is correct
What is nucleophilic aromatic substitution?
It is a reaction in in which a nucleophile displaces a leaving group on an aromatic ring.
The presence of EWG increases the rate of nucleophilic aromatic substitution
Nucleophilic aromatic substitution does not follow SN2 reaction mechanism, as the substitution takes place at trigonal carbon atom having sp3 hybridization.
It does not proceeds by SN2 reaction mechanism because of the steric hindrance of the benzene ring.
In the presence of a superior leaving group, the SN1 reaction pathway may be followed by nucleophilic aromatic substitution.
The SN1 reaction would result in the production of an aryl carbocation and the removal of the leaving group.
In most cases, elimination addition or addition elimination route is followed by nucleophilic aromatic substitution.
NO2 exists in the form of O=N+-O, as a nucleophilic leaving group it should be in form of O=N-O¯.
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The molar mass of ammonium acetate is 77.083 g/mol. A student uses 0.100 mol of ammonium acetate in a chemical reaction. The
student claims that the reaction uses (0.100 mol) (77.083 g/mol) = 7.71 g of ammonium acetate, which has
(7.71) (6.022 x 1023) = 4.64 x 1024 molecules.
In one to two sentences, explain the mistake that the student made and determine the correct number of molecules of ammonium
acetate used in the reaction.
Answers
The student's claim of 4.64 × 10^24 molecules is incorrect, and the correct number of molecules of ammonium acetate used in the reaction is 6.022 × 10^22 molecules.
The mistake the student made is assuming that the molar mass of ammonium acetate directly corresponds to the number of molecules. However, the molar mass of a substance represents the mass of one mole of that substance, not the number of molecules.
To determine the correct number of molecules of ammonium acetate used in the reaction, we need to use Avogadro's number, which relates the number of particles (atoms, molecules, etc.) in one mole of a substance.
Avogadro's number is approximately 6.022 × 10^23 particles/mol. Given that the student used 0.100 mol of ammonium acetate, we can calculate the correct number of molecules by multiplying the number of moles by Avogadro's number:
Number of molecules = (0.100 mol) × (6.022 × 10^23 molecules/mol)
Performing the calculation, we find that the correct number of molecules of ammonium acetate used in the reaction is 6.022 × 10^22 molecules.
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PLEASE HELP ME QUICKLY (select all that apply) Enzymes made by extremophiles can be harvested and used in everyday applications. These uses include
making laundry detergents.
making dish detergents.
recycling old tires.
de-hairing hides.
making paper.
Answers
Answer:
A, B, D, E
Explanation:
did it on edg
Answer:
A. Making laundry detergent
B. Making dish detergent
D. De-hairing hides
E. Making paper
Explanation:
Benzaldehyde is similar to aliphatic aldehydes except that benzaldehyde
Answers
Answer:
Benzaldehyde is similar to aliphatic aldehydes except that benzaldehyde has a benzene ring attached to the carbonyl group, while aliphatic aldehydes have a straight or branched carbon chain attached to the carbonyl group. This structural difference gives benzaldehyde unique chemical and physical properties that distinguish it from aliphatic aldehydes. For example, benzaldehyde has a characteristic almond-like odor due to the presence of the benzene ring, while aliphatic aldehydes have a pungent odor. Additionally, benzaldehyde is less soluble in water than aliphatic aldehydes due to the nonpolar nature of the benzene ring.
Define the term "Potential Energy" in your OWN WORDS.
Answers
hope this can help you
you can search on google some stuff like your question
whAT IS THE ELEMENTS FOR THE EQUATION OF DENSITY?
Answers
Answer:
Hello there! I believe the answer you need is d= M/V. Have a good day,night or miday. Sorry if I'm wrong.
if 1500 tons of ammonia is needed to be produced daily to meet the needs of industry, what mass of nitrogen must be used from the atmosphere
Answers
if 1500 tons of ammonia is needed to be produced daily to meet the needs of industry mass of nitrogen must be used from the atmosphere is 6.291 gram
Ammonia has alkaline properties and is corrosive and ammonia gas dissolves easily in water to form ammonium hydroxide a caustic solution and weak base
Here given data is 1500 tons of ammonia
1 tons = 1,000,000gram so
1500 tons = 1,500,000,000 gram
We have to calculate mass of nitrogen in 1500 tons ammonia =?
So, 1500 tons/17.031g/mol = 88.074g/mol
Then 88.074g/mol/14g/mol
= 6.291 gram
Therefore mass of nitrogen must be used from the atmosphere is 6.291 gram
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Ten plants are grown in equal amounts of sunlight with equal amounts of water and varying amounts of fertilizer.
Fertilizer is a(n):
Answers
True or false:In order for an electron to go back to the ground state, the atom emits the excess energy in the form of a photon, a particle of light. Each element will produce a unique line spectrum because each element has different energy levels
Answers
The given statement is true. In order for an electron to go back to the ground state, the atom emits the excess energy in the form of a photon.
After absorbing the energy, the electron advances to a higher energy state. In the opposite process, called emission, the electron releases the excess energy it had taken up and goes back to its ground state.
The energy of the electron drops when it changes levels, and the atom releases photons. The emission of the photon occurs as the electron transitions from a higher to a lower energy state. The energy of the photon is precisely the energy that is lost when an electron moves to a level with less energy.
Because each element has a different amount of electrons and hence a diverse range of energy levels, each element's spectra are distinct.
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limitation of hydrogen displacement method
Answers
Answer:
Limitation of hydrogen displacement method is described below in detailed explanation.
Explanation:
This approach is beneficial for elements that can displace hydrogen from psychedelics or can consolidate with hydrogen. A single replacement effect, sometimes described as a single displacement reaction, is a reflection in which one component is replaced for a different component in a compound. The origin elements are forever pure elements, such as a clear zinc metal or hydrogen propellant, plus an aqueous compound.
(1-6) Which of the electron movements shown below (A, B, C, or D) will emit the highest energy light?
A
B
с
D
na3
ng
n=5
n=6
ОА
OB
Ос
OD
Answers
Answer:
I would say D (not sure tho)
Explanation:
what is the difference between biology and anatomy?
Answers
Answer:
Biology is the study of nature, like plants and animals, while anatomy is the study of the human body, like our bones and muscles.
Explanation:
Hope it helped!
Variable definition
Answers
Answer: is factor that change in a controlled experiment
Explanation:
Why can’t neon store energy in this way?
Answers
Answer:
Neon is a noble gas, it is monoatomic in nature, which implies that it has only one atom present. If we compare neon with water, water has three atoms present, two hydrogen atoms and one oxygen atom. Hence water stores more energy than neon because it is polyatomic and contains chemical bonds.