write a chemical equation for action of HBr on ethanol
Answers
answer:
hope this one helps have a great day !
Related Questions
draw a lewis structure for one important resonance form of hno3 (hono2). include all lone pair electrons.
Answers
Lewis structure for HNO3 (HONO2) resonance form: O-N(+)=O(-)-H
In the HONO2 molecule, the nitrogen atom is bonded to two oxygen atoms and a hydrogen atom. The most stable resonance structure is where the nitrogen atom has a formal charge of +1 and one oxygen atom has a formal charge of -1, while the other oxygen atom maintains a double bond with the nitrogen atom. The resulting Lewis structure shows the nitrogen atom with three single bonds and a lone pair of electrons, while each oxygen atom has a double bond and a lone pair of electrons. The hydrogen atom is bonded to the oxygen atom with the negative charge. This resonance form helps to explain the acidic nature of HNO3 and the ability of the nitrogen atom to act as an electron acceptor in chemical reactions.
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Hydrazine (N_2H_4) decomposes to produce N_2 and NH_3. How many molecules of NH_3 will be formed if 60 molecules of N_2H_4 decompose into N_2 and NH_3
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80 molecules of \(NH_{3}\) will be formed if 60 molecules of \(N_{2}H_{4}\) decomposes into \(N_{2}\) and \(NH_{3}\)
What are molecules?The smallest particle of a substance has all of the physical and chemical properties of that substance. Molecules are made up of one or more atoms.
Just balance the reaction:
\(3N_{2}H_{4}\to N_{2}+4NH_{3}\)
Now you can see that every 3 molecules of \(N_{2}H_{4}\)4 molecules of \(NH_{3}\).
For 60molecules of \(N_{2}H_{4}\) we scale up these numbers by a factor of 60/3 = 20.
Therefore 4x20 = 80 molecules of \(NH_{3}\) are formed.
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What is the number of Valence Electrons for Chlorine?
Answers
Answer:
7
Explanation:
The temperature of a sample of water increases from 20°C to 46.6°C as it absorbs 23,639.6 J of heat. What is the mass of the sample?
Answers
Answer: 213 g
Explanation:
At what minimal temperature is the following reaction, the reduction of magnetite by graphite to elemental iron, spontaneous?
Fe3O4(s)+2C(s,graphite)→2CO2(g)+3Fe(s)
Answers
The values of enthalpy change, entropy change and temperature all determine the spontenity of a reaction.
What is a sponteanous reaction?A sponteanous reaction is one which has the change in free energy as negative. We know that ΔG = ΔH - TΔS. The spontenity of a reaction depends on;
i. enthalpy change
ii. entropy change
iii. temperature
Since the values in the qestion are not given, the question is incomplete and we can not obtain a numerical value in order to decide the sponteanity of the reaction.
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What is the notation for the enthalpy of solution?
O -Hsol
O AH sol
Ο ΔΕ
O +Hsol
Answers
The notation for the enthalpy of the solution is ∆Hsol. The correct answer is option ∆Hsol.
The enthalpy of solution is a measure of the amount of heat absorbed or released when a solute is dissolved in a solvent to form a solution. If the value of ∆Hsol is positive, it means that heat is absorbed during the process of dissolving the solute, while a negative value of ∆Hsol indicates that heat is released during the same process. This value is often used to predict whether a given solute will dissolve in a given solvent, as well as the relative amounts of solute and solvent that will be required to form a solution. The enthalpy of solution can be calculated experimentally by measuring the temperature change that occurs when a known amount of solute is dissolved in a known amount of solvent. Alternatively, it can be calculated theoretically using thermodynamic data for the solute and solvent.For more questions on enthalpy
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in soil science, the term to describe the cohesion of soil particles is
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In soil science, the term used to describe the cohesion of soil particles is "cohesion."
Cohesion refers to the internal molecular attraction or sticking together of soil particles. It is one of the key factors influencing the mechanical behavior and strength of soils.
Soil is composed of individual particles, including sand, silt, clay, and organic matter. Cohesion is the force that holds these particles together, allowing them to form aggregates or clumps. The cohesion between soil particles arises from various mechanisms, including electrostatic forces, Van der Waals forces, and surface tension.
Electrostatic forces: Soil particles, especially clay particles, carry electric charges on their surfaces. These charges can be either positive or negative. When particles with opposite charges come close to each other, electrostatic attraction occurs, leading to cohesion between the particles.
Van der Waals forces: Van der Waals forces are weak attractive forces between molecules or atoms. In soil, these forces contribute to the cohesion between adjacent particles. They arise due to temporary fluctuations in the electron cloud, resulting in an attractive force between particles.
Surface tension: Surface tension is the tendency of a liquid to minimize its surface area. In soils, water acts as a binding agent and contributes to cohesion between particles. Water molecules exhibit surface tension, allowing them to form thin films around soil particles and create cohesive forces between them.
So, cohesion is the term used in soil science to describe the sticking together or attraction between soil particles.
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Porque el carbón no se disuelve en agua ????
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Can CBD product be harmful
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______= Speed / Wavelength
Answers
Answer:
Frequency
Explanation:
It’s kinda self-explanatory but bascially speed=wavelength times frequency
Answer:
Frequency is Speed divided by Wavelength
Step-by-step explanation:
Don't think there needs to be an explanation for the formula, unless you want the conceptual understanding
The particles in a solid are closer together than they are in a liquid:
Agree or Disagree?
Answers
Answer:
agree that's why it's solid...
In an ionic compound, the negative and positive ions are held together by __________.
Answers
Answer:
the third one
Explanation:
what is fractional distinction?
Answers
Answer:
ANSWERFractional distillation is a technique used to separate miscible liquids that have boiling point difference of less than 25 ºC. The only difference in apparatus between simple and fractional distillation methods is the use of a fractionating column used during fractional distillation.\(\sf\large\underline\purple{Fractional\: Distillation:-}\)
Fractional distillation is a type of distillation which involves the separation of miscible liquids.\(\rightarrow\)The process involves repeated distillations and condensations and the mixture is usually separated into component parts. The separation happens when the mixture is heated at a certain temperature where fractions of the mixture start to vaporize.
\(\rightarrow\)The basic principle of this type of distillation is that different liquids boil and evaporate at different temperatures. So when the mixture is heated, the substance with lower boiling point starts to boil first and convert into vapours.
\(\sf\underline\green{Applications\: Of\:Fractional\: Distillation:-}\)
Fractional distillation is used for the purification of water as well as separating acetone and water.Fractional distillation is used in several industries like oil refineries and chemical plants mainly for purification and separation of many organic compounds.Fractional distillation is also used for the separation of (liquefied) air. Components like liquid nitrogen and oxygen as well as concentrated argon are obtained.Distillation is used in the production of high-purity silicon from chlorosilanes. The silicon is widely used in semiconductors.________________________________
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Identify the neutralization reaction. O2H 3PO 4 + 3Ba(OH) 2 6H 20+ Ba(PO 4) 2 O2 NO 2 202 + N 2 PO 4 2NH3 + H2SO 4 → (NH 4) 2SO4 O 3Pb + 2H 3PO4 → 3H 2 + Pb 3(PO 4) 2
Answers
The neutralization reaction is:
O2H 3PO4 + 3Ba(OH) 2 → 6H 2O+ Ba(PO 4)2
What is neutralization reaction?A neutralization reaction is a type of chemical reaction that occurs between an acid and a base, resulting in the formation of a salt and water.
In this reaction, the hydrogen ions (H+) from the acid react with the hydroxide ions (OH-) from the base to form water (H2O), which neutralizes the acidic and basic properties of the reactants. The remaining ions then combine to form a salt.
The general equation for a neutralization reaction is:
Acid + Base → Salt + Water
For this question, the chosen answer is the neutralization reaction because an acid (H3PO4) and a base (Ba(OH)2) react to form water and a salt (Ba(PO4)2).
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electric configuration for calcium
Answers
Answer:
this is answer brother
Other than color, what evidence can you use to identify chemical changes?
Answers
Explanation:
There are several pieces of evidence that can be used to identify chemical changes, other than a change in color. Some of these include the production of a gas, the formation of a precipitate, a change in temperature, and a change in the state of matter (e.g. from a solid to a liquid or vice versa). For example, if a solid substance is added to a liquid and bubbles of gas are produced, this is evidence of a chemical change. Similarly, if two clear solutions are mixed together and a solid precipitate forms, this is also evidence of a chemical change. Additionally, if a substance is heated and it changes from a solid to a liquid or from a liquid to a gas, this is also evidence of a chemical change.
The weak ionization constant (Ka)for HCO3 is equal to:AB[H3O+][CO32- ](HCO3-)[HCO3 -[H3O+][CO32-]
![The weak ionization constant (Ka)for HCO3 is equal to:AB[H3O+][CO32- ](HCO3-)[HCO3 -[H3O+][CO32-]](https://i5t5.c14.e2-1.dev/h-images-qa/contents/attachments/fFdZ9Lmdw8Dd0qIkJOMmwVFihe6UpcQX.jpeg)
Answers
Answer
A
\(\frac{\lbrack H_3O^+\rbrack)(\lbrack C(O_3)^2\rbrack}{\lbrack HCO_3^-\rbrack}\)Explanation
The ionization of HCO₃⁻ in H₂O is:
\(HCO₃⁻+H₂O\rightleftarrows H_3O^++CO₃^{2-}\)The general ionization constant, Ka is given as:
\(Ka=\frac{\lbrack Products\rbrack}{\lbrack Reactants\rbrack}\)Hence, the ionization (Ka) of HCO₃⁻ is equal to:
\(\frac{\lbrack H_3O^+\rbrack\lbrack CO_3^{2-}\rbrack}{\lbrack HCO_3^-\rbrack}\)Option A is the correct answer.
How do the Carnivorous plants survive without soil?
Answers
Carnivorous plants are easy to grow, if you follow a few, simple rules.
Wet all of the time.
Mineral-free water.
Mineral-free soil.
Lots of light.
Wet all of the time.
Carnivorous plants are native to bogs and similar nutrient-poor habitats. As a consequence, the plants live in conditions that are constantly damp. To grow healthy carnivorous plants, it is important to duplicate their habitat as closely as possible. Keep the soil wet or at least damp all of the time. The easiest way to do this is use the tray method. Set the pots in a tray or saucer, and keep water in it at all times. Pitcher plants can grow in soggy soil with the water level in the saucer as deep as 1/2 the pot, but most carnivorous plants prefer damp to wet soil, so keep the water at about 1/4 inch and refill as soon as it is nearly gone. Water from below, by adding water to the tray, rather than watering the plant. This will avoid washing away the sticky muscilage of the sundews and butterworts and keep from closing the flytraps with a false alarm.
Mineral-free water.
Always use mineral-free water with your carnivorous plants, such as rainwater or distilled water. Try keeping a bucket near the downspout to collect rainwater. Distilled water can be purchased at the grocery store, but avoid bottled drinking water. There are simply too many minerals in it. The condensation line from an air conditioner or heat pump is another source of mineral-free water. Reverse-osmosis water is fine to use. Carnivorous plants grow in nutrient poor soils. The minerals from tap water can “over-fertilize” and “burn out” the plants. In a pinch, tap water will work for a short while, but flush out the minerals with generous portions of rainwater, when it is available.
Mineral-free soil.
The nutrient poor soils to which the carnivorous plants have adapted are often rich in peat and sand. This can be duplicated with a soil mixture of sphagnum peat moss and horticultural sand. Be sure to check the peat label for sphagnum moss. Other types will not work well. The sand should be clean and washed. Play box sand is great, and so is horticultural sand. Avoid “contractor’s sand” which will contain fine dust, silt, clay and other minerals. Never use beach sand or limestone based sand. The salt content will harm the plants. The ratio of the mix is not critical, 1 part peat with 1 part sand works well for most carnivorous plants. Flytraps prefer a bit more sand, and nepenthes prefer much more peat. Use plastic pots, as terra cotta pots will leach out minerals over time and stress your plants.
Explanation:
Kayo na Po bahala magpaigsi
Answer:
A simple answer: Carnivores don't eat plants only flesh. So they would not need soil. But it would be hard for Carnivores to get energy because they get energy indirectly from the animals (herbivores) that they eat. How do they get the energy from a herbivore you might ask. Herbivores eat only plants and that gives the herbivore the plant's energy; but if the herbivore gets eaten, it is indirectly transferred into the Carnivore. Hope this helped!!
Carnivore = only feeds on flesh
Herbivore = eats only plants
Omnivore = eats plants and animals/flesh
Which of the following reactions is not an example of a neutralization reaction?
a) HCl(aq) + NaOH(aq) - NaCl(aq) + H2O(1)
Ob) 2 HCl(aq) + Mg(OH)2(aq) - 2 H 20(e) + MgCl 2(aq)
Oc) HCl(aq) + KOH(aq) - H 20() + KCl(aq)
d) 2 H2(g) + O2(g) – 2 H2O(g)
Answers
Answer:
The answers are B and D.
Explanation:
This is because neutralisation process that contain sodium, potassium and ammonium will produce salt and water.
In the lab, a student needs to determine the van't Hoff factor for a deicer in water. Using the same deicer, he prepares six solutions at different concentrations. The freezing point depression constant for water is 1. 86 °C/m. Identify the deicer used to prepare the solution
Answers
The van't Hoff factor is a measure of the effect of a solute on the freezing point of a solvent, and it depends on the concentration of the solute and the nature of the solvent.
In order to determine the van't Hoff factor for a deicer in water, we would need to know the concentration of the deicer in each of the six solutions that were prepared, as well as the freezing point of each solution.
Assuming that the deicer is a solute that is dissolved in water, the van't Hoff factor for the deicer can be calculated using the following formula:
ΔTf = ΔTb - (Kf * x)
here ΔTf is the change in freezing point, ΔTb is the change in freezing point of the solvent, Kf is the freezing point depression constant for the solvent, and x is the concentration of the solute in moles per liter.
The freezing point depression constant for water is 1. 86 °C/m, and the freezing point of water is 0 °C. Therefore, the freezing point of a solution of water with a concentration of x moles per liter is (1 + x) °C.
To calculate the van't Hoff factor for the deicer, we need to know the concentration of the deicer in each of the six solutions that were prepared. Without this information, it is not possible to determine the van't Hoff factor for the deicer.
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and Amides are derivatives of __________and_________O amines, esters O amines, carboxylic acidsO alkanes, aminesO carboxylic acids, alcohols O alcohols, carboxylic acids
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Option (b) is correct. Amides are the derivative of amines and carboxylic acids.
Amides are the derivatives of carboxylic acid and amines. A carboxylic acid contains the −COOH functional group, and in an amide the −OH part of that group is replaced by an −NH2 group. So, amides contain the −CONH2 group. Any member of either of two classes of nitrogen-containing compounds related to ammonia and amines. The covalent amides are neutral or very weakly acidic substances formed by replacement of the hydroxyl group (OH) of an acid by an amino group NR2, in which R may represent a hydrogen atom or an organic combining group such as methyl, CH3. Among the amides of commercial importance are acetamide and dimethylformamide HCON(CH3)2, which are used as solvents, the sulfa drugs, and the nylons.
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What is a Testable question I can use for tennis balls
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Answer:
How long does it take for a tennis ball to fall from a certain height if recorded in different weather?
Explanation:
Can I have brainliest?
Answer:
How far can a ball travel if thrown during different wind speed?
Explanation:
Brainliest Plzzz!!!
A very hot cube of copper metal (32.5 g) is submerged into 105.3 g of water at 15.4 0C and it reach a thermal equilibrium of 17.3 0 Calculate the initial temperature of copper (Cs = 0.385 J/g 0C for copper, and 4.18 J/g 0C for water).
Answers
Answer:
The initial temperature of the metal is 84.149 °C.
Explanation:
The heat lost by the metal will be equivalent to the heat gain by the water.
- (msΔT)metal = (msΔT)water
-32.5 grams × 0.365 J/g°C × ΔT = 105.3 grams × 4.18 J/g °C × (17.3 -15.4)°C
-ΔT = 836.29/12.51 °C
-ΔT = 66.89 °C
-(T final - T initial) = 66.89 °C
T initial = 66.89 °C + T final
T initial = 66.89 °C + 17.3 °C
T initial = 84.149 °C.
A group of hikers finds a fallen tree in a forest. The dead tree trunk is covered by mushrooms and other fungi. Later, they find a wild apple tree with many apples lying on the forest floor beneath the tree. The apples are all rotten and decayed by bacteria. Which statement BEST summarizes how these fungi and bacteria organisms are obtaining their food energy?
Answers
The fungus and bacteria organisms are obtaining the energy they need by decomposing organic matter like dead trees and old apples.
Why do fungi exist?Yeasts, moulds, and mushrooms are examples of the eukaryotic animals known as fungi, along with other microorganisms. These organisms are classified as fungus. The omnipresent, cell-walled creatures that make up the Kingdom Fungi are widespread. They belong to the group of organisms known as heterotrophs.
What is Decomposition?Decomposition, also referred to as rot, is the process by which biological matter decomposes into less complex carbon dioxide, water, simple sugars, and mineral salts. The process, which is a part of the nutrient cycle, is essential for recycling the small quantity of material that occupies space in the environment. A living thing's corpse begins to decompose after it dies. Worms are one animal that helps break down biodegradable materials. Organisms that carry out this process are known as decomposers. Although no two organisms decompose precisely the same way, they all go through the same orderly stages.
In this question, since both fungi and bacteria are decomposers, therefore they obtain their energy from decomposing the dead tree trunk and the fallen apples.
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The model shows the first three periods of the Periodic Table. Which statement BEST describes the trend in the number of protons and valence electrons across a period?
A. Across a period, elements gain a proton and lose a valence electron.
B. Across a period, elements gain a proton and gain a valence electron.
C. Across a period, elements lose a proton and gain a valence electron.
D. Across a period, elements lose a proton and lose a valence electron.
Answers
Moving across the period the elements gain a proton and gain a valence electron.
What is an element and why elements gain proton across the period?An element is the building block of inorganic chemistry , the basic fundamental unit of compounds.There are total of 118 elements discovered yet , out of which the 118th element is orgasson.Moving across the period that is from left to right the size of element decreases because of the addition of protons.Moving across the period the nucleus have increased capacity of attraction.With increase in the positive charge the nucleus gains a proton and a valence electron.To know more about periodic table visit:
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Question 8 of 10
Which of the following is made of matter?
A. Light
B. Energy
C. The sun
D. Heat
Answers
Answer: i Choose the sun
because it has mass
Explanation: matter is anything that has mass and occupies space / Volume
and the sun has mass though it is not a solid one, and is made up of matter
HOPE THIS HELPSS!!!!
Four gases were combined in a gas cylinder with these partial pressures: 3.5 atm N2, 2.8 atm O2, 0.25 atm Ar, and 0.15 atm He. What is the mole fraction of N2 in the mixture?
Answers
Answer:
x = 0.51
Calculations:
P = 3.00 atm + 2.80 atm + 0.25 atm + 0.15 atm
P = 6.8 atm
3.5 atm = x (6.8 atm)
x = 0.51
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Hope this helps.
acetone is a common solvent that has a density of 0.7899 g/ml. 0.7899 g / ml . what volume of acetone, in milliliters, has a mass of 37.2 g 37.2 g ?
Answers
47.1 ml of acetone has a mass of 37.2 g when the density is 0.7899 g/ml.
As stated in the question,
the density of acetone = 0.7899 g/ml
as we know, the mass of a substance per unit of volume is its density which means 0.7899 g ( mass) is present in 1 ml (volume). Hence, by the unitary method:
0.7899 g -> 1ml
1g-> 1/0.7899 ml
37.2 g -> 37.2/0.7899 ml = 47.1 ml
47.1 ml of acetone has a mass of 37.2 g.
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Which example is an exothermic reaction?
4Fe (s) + 302 (g) + 6H2O (l) → 4Fe(OH)3 (s) + heat
H2O (s) + heat → H₂O (1)
NH4NO3 + heat → NH++ NO 4
heat+C6H12O6 (s) + H2O (l) →→ C6H12O6 (l) + H₂O (1)
Answers
Answer:
The example of an exothermic reaction is:
4Fe (s) + 3O2 (g) + 6H2O (l) → 4Fe(OH)3 (s) + heat
Explanation:
The reaction provided, 4Fe (s) + 3O2 (g) + 6H2O (l) → 4Fe(OH)3 (s) + heat, is an example of an exothermic reaction because it releases heat as a product.
In exothermic reactions, the overall energy of the reactants is higher than the energy of the products. During the reaction, bonds between atoms are broken, and new bonds are formed to create the products. In this particular reaction, iron (Fe) reacts with oxygen (O2) and water (H2O) to form iron(III) hydroxide (Fe(OH)3).
The formation of the Fe(OH)3 solid releases heat, indicating that energy is being given off to the surroundings. The release of heat suggests that the products have a lower energy state than the reactants. Therefore, this reaction is classified as exothermic.
It's worth noting that the other provided reactions do not indicate the release of heat as a product, making them either endothermic or not directly associated with heat transfer.
4Fe (s) + 3O2 (g) + 6H2O (l) → 4Fe(OH)3 (s) + heat
In this reaction, the formation of Fe(OH)3 releases heat.
The presence of "heat" on the product side of the equation indicates that energy is being released or given off during the reaction, which is a characteristic of exothermic reactions.
Mark the statement as true or false.
All of the proposed ideas by Dalton, Thomson, and Rutherford are still used in the Modern Theory of the Atom.
true
false
Answers
Answer:
False
Explanation:
The ideas were not proposed
Answer:
false
Explanation: