The latent heat of vaporization of water in kJ/g is 2.197 kJ/g.
What is the latent heat of the vaporization of water?The latent heat of vaporization of water is calculated from the given data as follows:
Heat change = mass * specific heat capacity * temperature changeThe heat required to change water at 88.3 °C to water at 100 °C = 74 * 4.18 * (100 - 74)
The heat required to change water at 88.3 °C to water at 100 °C = 8042.32 J or 8.042 kJ
The heat required to change water vapor at 100 °C to water vapor at 112.5 °C = 74 * 2.10 * (112.5 - 100)
The heat required to change water vapor at 100 °C to water vapor at 112.5 °C = 1942.50 J or 1.943 kJ
The heat required to change water at 100 °C to water vapor at 100°C = 172.58 - (8.042 + 1.943)
The heat required to change water at 100 °C to water vapor at 100°C = 162.595 kJ
The heat of vaporization of water in kJ/g = Heat change / mass
The heat of vaporization of water in kJ/g = 162.595 / 74
The heat of vaporization of water in kJ/g = 2.197 kJ/g
Learn more about the heat of vaporization at: https://brainly.com/question/22244892
#SPJ1
Classify each of the following reactions as a precipitation, acid-base neutralization, or oxidation reduction Drag the appropriate items to their respective bins. 2HCN (aq) + Ca(OH),(aq) Ca(CN)2(aq) + 2H2O(1) NICI, (n) + Na,(na) - NIS(8) +2NaCl(aq) S:($)+80,(B) +880,() Precipitation Acid-base neutralization Oxidation reduction
Ca(CN)2 (aq) + 2H2O (l)
Here HCN is acid and Ca(OH)2 is base . Acid and base Neutralize and forms water.
Here also acid and base Neutralize and forms water.
Therefore This is acid-base neutralization reaction.
NiCl2 (aq) + Na2S (aq)
NiS(s) + 2 NaCl(aq)
In this reaction, precipitation of NiS occurs and hence this reaction is precipitation reaction.
Note: 's' in paranthesis represent solid i.e., precipitate.
S8 (g) + 8O2 (g).
Increase in Oxidation number is Oxidation and decrease in oxidation number is reduction.
Here , Oxidation number of S is increase from 0 to +4 and that of oxygen is decreses from 0 to -2 .
Hence this reaction is Oxidation-reduction reaction.
To know more about Oxidation-reduction reaction, click here:
https://brainly.com/question/19528268
#SPJ4
The vapor pressure of water at 5C is 6.55 toor. Calculate the vapor pressure in mm Hg and atm . Round each of your answers to 3 significant digits.
Answer: 6.55 mmHg, 0.00862 atm
Explanation:
1 mmHg is equal to 1 torr, so those two values are the same thing.
1 atm is 760 torr, we can find the atm value by (6.55)/(760)=0.00862 atm.
question content area which of the following properties is traditionally associated with arrhenius bases? They contain hydronium ions | They form precipitates with solutions of most metals | They react with carbonates to release CO2 | They cause blue litmus indicator to turn red | They release hydrogen when zinc is added
The property which is traditionally associated with arrhenius bases is "They form precipitates with solutions of most metals".
An Arrhenius base is a compound that increases the OH− ion concentration in an aqueous solution. The reaction between an Arrhenius acid and an Arrhenius base is called neutralization and results in the formation of water and salt. The reaction between an Arrhenius acid and an Arrhenius base is called neutralization and results in the formation of water and salt. Arrhenius bases that are soluble in water can conduct electricity. Bases often have a bitter taste and are found in foods less frequently than acids. Bases also change the color of indicators. Some bases react with metals to produce hydrogen gas.
Find more about Arrhenius base:-
brainly.com/question/516295
#SPJ4
the oxidation of fadh2 to fad involves the transfer of ; the oxidation of nadh to nad involves the transfer of .
Transfer of two hydrogen atoms occurs during the oxidation of fadh2 to fad, whereas a hydride is transferred during the oxidation of nad+ to nad. when a chemical reaction of an atom to lose one or more of its electrons.
The chemical element with the atomic number 1 and symbol H is hydrogen. The element hydrogen is the lightest. Hydrogen is a gas made up of diatomic molecules with the formula H2 under normal circumstances. It has no flavour, no smell, no colour, is non-toxic, and is very flammable. The elementary electric charge of the electron, a subatomic particle, is a negative one. Due to their lack of known components or substructure, electrons, which are part of the first generation of the lepton particle family, are typically considered to be elementary particles.
Learn more about hydrogen here
https://brainly.com/question/28937951
#SPJ4
Calculate the heat, in kJ, that would be involved in condensing 22.5 g of CH₃OH. (∆Hvap = 38.0 kJ/mol)
Specific heat capacity of a substance is the amount of heat required to raise the temperature by one degree Celsius of one gram of a substance. Therefore, 12.401KJ of heat is required to condense 22.5 g of CH₃OH.
What is Enthalpy?Enthalpy term is basically used in thermodynamics to show the overall energy that a matter have. Mathematically, Enthalpy is directly proportional to specific heat capacity of a substances.
Mathematically,
q = n ×ΔH
where
q = amount of heat= ?
n = no of moles
number of moles of CH₃OH = 22.5 g ÷32.04 g/mol
number of moles of CH₃OH = 0.70 moles
ΔH = enthalpy =38.0 kJ/mol
Substituting all the given values, we get
q = n ×ΔH
= 0.70 ×38.0
= 12.401 kJ
Therefore, 12.401KJ of heat is required to condense 22.5 g of CH₃OH.
To know more about enthalpy, here:
https://brainly.com/question/24170335
#SPJ1
treated with one equivalent of N-Bromosuccinimide in The following alkene is bromination product(s) dichloromethane in the presence of light to give pts pts 2 pts line-angle formula for cach product - formed Draw 2 pts 2pts Visited do not have t0 consider stereochemistry: Draw organic products only: Draw one structure per sketcher: Add additional sketchers using the drop-down menu in the bottom right corner: Separate multiple products using the sign from the drop down menu Pravious
Hydrogen's potential as a domestic alternative fuel source, capacity to power fuel cells in zero-emission cars, quick filling time, and hydrogen hashigh efficiency all contribute to its appeal as a transportation fuel.
Important nutritional sources of bromine include grains, nuts, shellfish, and sea salt.
For making bread and other baked items, brominated flour is occasionally used.
The signs and symptoms of poisoning include lacrimation and redness of the eyes, irritation of the nose and throat, coughing, and dyspnea.
Abdominal discomfort, hemorrhagic gastroenteritis, and subsequent shock can all result from ingesting liquid bromine.
Learn more about bromine here: brainly.com/question/29028678
#SPJ4
draw structural formulas for the alkoxide ion and the alkyl(aryl)bromide that may be used in a williamson synthesis of the ether shown. ch2ch3
The most popular method for producing ethers is termed Williamson synthesis after its creator Alexander Williamson. It is an organic reaction where an organohalide and an alkoxide combine to generate ethers. The SN2 mechanism is used to carry out the reaction.
On the accompanying image, the necessary alkoxide ion, alkyl(aryl)bromide, and the ether that results from the reaction are all visible. Alkyl halides are also known as haloalkanes. Halogen atoms have replaced one or more hydrogen atoms in an alkane to form compounds known as alkyl halides. Alkyl halides are halogen-substituted alkanes in which one or more hydrogen atoms in an alkane are replaced with a halogen atom, such as fluorine, chlorine, bromine, or iodine.
To learn more about alkoxide please click on below link
https://brainly.com/question/8835092
#SPJ4
When the nurse administers ethyl chloride to a client, which type of anesthesia is being administered?
Answer: Topical Anesthesia.
Explanation:
Topical anesthetics are used to treat ailments including small burns, insect bites, poison ivy, poison oak, poison sumac, and minor cuts and scratches that cause discomfort and irritation.
The nerve terminals in the skin are numbed by topical anesthesia. They don't render patients unconscious like general anesthetics used during surgery do. The majority of topical anesthetics are accessible over-the-counter, but your doctor may have specific recommendations for their usage and dosage given your particular medical condition.
Which of the following is the correct net ionic equation of the neutralization reaction between hydrofluoric acid and sodium hydroxide in aqueous solution?
The aqueous solution neutralisation of sodium hydroxide and hydrofluoric acid.
HF(aq)+OH−(aq)→H2O(l)+F−(aq)
A mixture of hydrogen fluoride (HF) and water is hydrofluoric acid. Acidic, colourless, and extremely corrosive describe HF solutions. It is employed to create the majority of fluorine-containing chemicals, including PTFE and the widely used antidepressant drug fluoxetine (Prozac) (Teflon). It produces the elemental fluorine. Glass and silicon wafers are frequently subjected to its utilisation. Organofluorine chemistry is the main use of hydrofluoric acid. Teflon, fluoropolymers, fluorocarbons, and refrigerants like freon are just a few of the many organofluorine compounds that are created utilising HF as the fluorine source. Fluorine is a component of many medicines. Hydrofluoric acid is used to create the majority of inorganic fluoride compounds with significant volume. Cryolite, AlF3, and Na3AlF6 are the two most important substances. The fabrication of metallic materials uses a molten mixture of these solids as a high-temperature solvent.
Learn more about hydrofluoric acid here:
https://brainly.com/question/24194581
#SPJ4
Does oxygen make ionic bonds?
Oxygen can produce both ionic and covalent connections. Numerous oxides contain the oxide ion, O2 but water hydrolyzes it, making it impossible for it to reside there.
What kind of bonds does oxygen form?When it is in its elemental condition, oxygen is a diatomic molecule, like hydrogen. Only six electrons are available to each oxygen, thus two bonds must be formed by sharing these electrons. Double bonds serve as an illustration of this.
What is hydrogen and oxygen capable of forming ionic bonds?Detailed response and defense The hydrogen and oxygen atoms in water are covalently bound. This is because the difference in electronegativity between oxygen and hydrogen prevents the oxygen atom from completely stealing the electron from each hydrogen atom.
To know more about oxygen make ionic bonds visit:
https://brainly.com/question/20776763
#SPJ4
A gas phase reaction is happening in a closed metal vessel. Identify the surroundings of the reaction. O The metal vessel The room The experiment O The gas
The metal vessel The room The experiment O The gas, The gas which evolve in the reaction is oxygen. A chemical process in which substances interact and transform into another substance.
What is reaction?
A chemical process in which substances interact and transform into another substance, or one substance transforms into another, is called a reaction.
Therefore, The metal vessel The room The experiment O The gas, The gas which evolve in the reaction is oxygen. A chemical process in which substances interact and transform into another substance, or one substance transforms into another, is called a reaction.
To learn more about reaction refer the given link:-
https://brainly.com/question/13929053
#SPJ4
The sodium (Na) content of 1 particular can of soup is 890 mg sodium in 1 c. What is the molarity of sodium (Na) in the soup? (Note: 4 c = 1 qt, and 1 qt = 0.946 L.) (3 points)
HELPPPPP (100 POINTS)
Assume that the water stream is replaced by a stream of CCl4. Predict what would happen in each case.
a. charged acetate strip:
b. charged vinyl strip:
c. Explain your predictions.
Answer:c
Explanation:c
during chemiosmosis, energy is released as h ions move freely across mitochondrial membranes. atp is synthesized when h ions move through a channel in atp synthase, a concentration gradient is generated when large numbers of h ions are passively transported from the matrix of the mitochondrion to the mitochondrion's intermembrane space. oh ions serve as the final electron acceptor.
During the chemiosmosis , ATP is synthesized when H⁺ ions move through a channel in ATP synthase.
The chemiosmosis is the movement of the ions through the semipermeable membrane . The ATP synthesis the free energy which is obtained by the electrons that are passes through the several carriers. chemiosmosis is the process of the pumping of the protons through the semipermeable membrane to obtained the proton gradient. the energy will be released in the process and results in the ATP synthesis.
Thus, when the H⁺ ions will move through the channel in the ATP synthase , ATP is synthesized , in the process of the chemiosmosis.
To learn more about chemiosmosis here
https://brainly.com/question/20343904
#SPJ4
what type of interaction would you expect between the side chains of each of the following pairs of amino acids in the tertiary structure of a protein?what type of interaction would you expect between the side chains of each of the following pairs of amino acids in the tertiary structure of a protein?
Dipole - dipole two cysteine interaction
What amino acid stabilizes the tertiary structure of a protein?
A protein's overall three-dimensional arrangement of its polypeptide chain in space is referred to as its tertiary structure. Internal interactions between nonpolar amino acid side chains and external polar hydrophilic hydrogen and ionic bond connections between polar molecules stabilize it frequently.
What is dipole-dipole interaction with example?
Examples of polar compounds that interact dipole-dipole include hydrogen chloride (HCl), carboxylic acids (such as acetic acid), and amino acids. A polar molecule's positive end will pull another molecule's negative end and change the other molecule's location.
To know more about Dipole - dipole interaction, visit:
https://brainly.com/question/7545068
#SPJ4
What is the predominant free radical produced?; What is produced when ionizing radiation enters the body?; Does ionizing radiation cause free radicals?; What is the result of ionization and free radical formation?
Ionizing radiation produces hydroxyl radicals either directly through the oxidation of water or indirectly by the creation of secondary partly ROS.
Ionizing radiation's role in the formation of free radicals?Ionizing radiation produces hydroxyl radicals either directly through the oxidation of water or indirectly by the creation of secondary partly ROS. By further reduction (or "activation") by metabolic processes in the cell, they may subsequently be changed to hydroxyl radicals.
A free radical in the body is what?Oxygen-containing molecules called free radicals have an unbalanced number of electrons. The unequal number makes it simple for them to interact with other molecules. Because they interact with other molecules so readily, free radicals can trigger lengthy chemical chains in your body. Oxidation is the name for these processes.
To know more about Ionizing radiation visit :-
https://brainly.com/question/26660482
#SPJ4
How many neutrons does cobalt have if its atomic numbers is 27 and its mass number is 59?; How many protons neutrons and electrons are there of cobalt has an atomic number of 27 a mass number of 58 and a charge of 3?; How many neutrons are present if cobalt has an atomic number of 27 a mass number of 59 and a charge of 3?; What is the number of protons of cobalt if it has a number of 27 in atomic number?; How many neutrons does an atom have if its mass number is 27 and it has 13 protons?; How many neutrons in atomic number is 27?
for the above example there are 27 protons, 31 neutrons, 27 electrons
Atomic number is equal to the number of protons and equal to the number of electrons. So 27 = number of protons = Number of electrons. Mass number is the sum of the number of proton and neutrons Mass number = 58 = Number of proton + Number of neutrons .Number of neutrons = Mass number - Number of protons 58-27=31 The charged amount of an atomic nucleus is the chemical element's atomic number, also known as nuclear charge number. For conventional nuclei, this is equivalent to the proton count or the amount of protons in the nucleus of every atom in that element
Learn more about Atomic number here:
https://brainly.com/question/8834373
#SPJ4
Solved Which mineral will scratch fluorite but not feldspar?
A mineral with a hardness of 7 can scratch. Fluorite is unable to scratch feldspar, quartz, corundum, diamond, or any other mineral with a Mosh hardness greater than 4.
What is mineral?
In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid compound with a fairly well-defined chemical composition and crystal structure that occurs naturally in its pure form.
Therefore, A mineral with a hardness of 7 can scratch. Fluorite is unable to scratch feldspar, quartz, corundum, diamond, or any other mineral with a Mosh hardness greater than 4. In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid compound with a fairly well-defined chemical composition and crystal structure that occurs naturally in its pure form.
To learn more about mineral refer the given link:-
https://brainly.com/question/26372961
#SPJ4
arsenic (as) can form both a cation and an anion. state these expected ions and write their short form electron configurations.
The amount of protons in the atoms' nucleus, of this substance, is 33. Since there are 33 electrons in a neutral atom, arsenic-neutral atoms, which have an equal amount of protons and electrons, are neutral.
When an atom is free of all charges, it is considered to be neutral. Ions are named when an atom has a charge on it. As a result, an atom is said to be neutral if it is in its initial state, which is one in which an electron has neither lost nor gained.
Any other atom may contain the same subatomic species that a neutral atom does. Electrons, protons, and neutrons make up the subatomic species. The distinction is that neutral atom have the same number of positive species as negative species, which cancels out all charges. A neutral atom thus has the same number of protons and electrons as a charged atom.
Learn more about neutral atom here:
https://brainly.com/question/5308494
#SPJ4
What mass of CuSO4 will be obtained by starting with 10g of CuO from the following reaction (Cuo=63.5)
The mass of CuSO₄ that will be obtained by starting with 10 g of CuO is CuSO₄
How do I determine the mass of CuSO₄ obtained?We'll begin by writing the balanced equation for the reaction. This is shown below:
2CuO + 2SO₂ + O₂ -> 2CuSO₄
Molar mass of CuO = 63.5 + 16 = 79.5 g/molMass of CuO from the balanced equation = 2 × 79.5 = 159 g Molar mass of CuSO₄ = 63.5 + 32 + (16 × 4) = 159.5 g/molMass of CuSO₄ from the balanced equation = 2 × 159.5 = 319 gFrom the balanced equation above,
159 g of CuO reacted to produce 319 g CuSO₄
Finally, we shall determine the mass of CuSO₄ obtained from the reaction by reacting 10 g of CuO. Details below:
From the balanced equation above,
159 g of CuO reacted to produce 319 g CuSO₄
Therefore,
10 g of CuO will react to produce = (10 × 319) / 159 = 20 g of CuSO₄
Thus, the mass of CuSO₄ obtained is 20 g
Learn more about mass produced:
https://brainly.com/question/9526265
#SPJ1
based on the bond angles in ch4ch4 , nh3nh3 , and h2oh2o , rank the magnitude of these repulsions. rank from strongest to weakest repulsion. to rank items as equivalent, overlap them
H2O > NH3 > CH4 is the order of repulsion, from greatest to weakest, based on bond angles.
Here are the details:
Methane, CH4, Ammonia, NH3, Water, and O2
The compounds listed above's bonds angles are;
CH4 has a 109.5° bond angle.
NH3 has a 107° bond angle.
H2O has a 104.5° bond angle.
According to the Valence Shell Electron Pair Repulsion Theory (VSEPR Theory), as the bond angle lowers as a result of the presence of lone pairs, it causes increased repulsion on the bond pairs and, as a result, causes the bond pairs to get closer.
The less repulsion there is, and vice versa, the higher the binding angle.
As a result, H2O repels NH3 and CH4 more strongly than other substances.
To know more about bond angle visit:-
https://brainly.com/question/13751116
#SPJ4
A student obtains a liquid sample of green food coloring that is known to contain a mixture of two solid pigments, one blue and one yellow, dissolved in an aqueous solution of ethanol. Which of the following laboratory setups is most appropriate for the student to use in order to separate and collect a substantial sample of each of the two pigments?
chromatography column (long tube w/ ink seperating)
Chromatography column (long tube w/ ink seperating) is the most appropriate for the student to use in order to separate and collect a substantial sample of each of the two pigments.
An aqueous solution is an solution in which the solvent is water. It's mainly shown in chemical equations via appending to the relevant chemical system. For example, an answer of table salt, or sodium chloride, in water might be represented as Na? + Cl?.
The solvent in aqueous answers is water, which makes up approximately 70% of the mass of the human body and is important for lifestyles.
Some examples of aqueous solutions are cola, the saltwater, the rain, acid , base solutions, salt solutions, and so forth.
Learn more about Aqueous solution here:- https://brainly.com/question/19587902
#SPJ4
suppose of zinc bromide is dissolved in of a aqueous solution of potassium carbonate. calculate the final molarity of bromide anion in the solution. you can assume the volume of the solution doesn't change when the zinc bromide is dissolved in it. be sure your answer has the correct number of significant digits.
The final molarity of the zinc cation in the solution is [Zn²⁺] = 4.78x10⁻¹⁰M.
The balanced chemical equation for the above reaction is given as:
ZnBr₂ (aq) + K₂CO₃ (aq) → ZnCO₃ (s) + 2KBr (aq)
The zinc that is added produce the insoluble ZnCO₃ with Ksp = 1.46x10⁻¹⁰:
1.46x10⁻¹⁰ = [Zn²⁺] [CO₃²⁻]
Let's find the moles of ZnBr₂ added = Moles of Zn²⁺ and moles of K₂CO₃ = Moles of CO₃²⁻ we can find the moles of CO₃²⁻ that remains in solution, as follows:
Moles of ZnB₂ (Molar mass: 225.2g/mol) = Moles Zn²⁺:
6.63g ZnBr₂ × (1mol / 225.2g) = 0.02944 moles of Zn²⁺
Moles of K₂CO₃ = Moles of CO₃²⁻:
0.100L × (0.60mol/L) = 0.060 moles CO₃²⁻
Moles CO₃²⁻ in excess: 0.0600moles CO₃²⁻ - 0.02944moles =
0.03056moles CO₃²⁻ / 0.100L = 0.3056M = [CO₃²⁻]
Substituting in Ksp expression:
1.46x10⁻¹⁰ = [Zn²⁺] [0.3056M]
[Zn²⁺] = 4.78x10⁻¹⁰M
Hence, the final molarity of the zinc cation in the solution is [Zn²⁺] = 4.78x10⁻¹⁰M.
The above question is incomplete and the complete question is given as:
Suppose 6.63g of zinc bromide is dissolved in 100.mL of a 0.60 M aqueous solution of potassium carbonate. Calculate the final molarity of zinc cation in the solution. You can assume the volume of the solution doesn't change when the zinc bromide is dissolved in it. Round your answer to 3 significant digits.
Learn more about molarity from the link given below.
https://brainly.com/question/16048058
#SPJ4
When nitric oxide is used in the dilation of smooth muscle cells, which of the following would interfere with the relaxation of the smooth muscle cells? Inhibitors ofA) Ca release by ER.B) nitric oxide.C) guanylyl cyclase.D) all of the above
The smooth muscle cells' ability to relax would be hampered by the things listed below. all of the above (option D).
Which of the three muscle kinds are they?Cardiac, smooth, and skeletal muscles comprise the three kinds of muscle tissue. Cardiac muscle cells are found in the walls of the heart, have a striped (striated) appearance, and are controlled by an automatic mechanism.
Muscle is what sort of tissue?Skeletal, smooth, and cardiac muscle tissue are the three types of muscle tissue that may be distinguished. Cylindrical, multinucleated, striated, and controlled by the brain, skeletal muscle fibers are. Spindle-shaped, striation-free smooth muscle cells are devoid of striations and feature a lone, central nucleus.
To know more about Muscle visit:
https://brainly.com/question/2937599
#SPJ4
Why starch peanut doesn't dissolve in acetone
Peanut doesn't dissolve in acetone because the crosslinking structure of polystyrene can be broken down in some organic solvents such as acetone.
What is acetone?
Acetone, is described as an organic compound with the formula (CH₃)₂CO which is the simplest and smallest ketone.
Acetone is known to be colorless, highly volatile and flammable liquid with a characteristic pungent odor.
When the polystyrene peanuts are added to the acetone, they do not really dissolve in the acetone, but instead go through a process called “swelling” that allows the trapped gases to escape.
Learn more about acetone at:
https://brainly.com/question/26510453
#SPJ1
all of these phytochemical compounds have been studied for their potential lipid-lowering effects except for _____. a.Sterols. b.Flavonoids. c.Anthocyanins. d.Mercury
Mercury is a heavy metal of considerable toxicity
Scientific literature reveals various plants and plant derived natural products, i.e., phytochemicals, which can alleviate experimentally induced mercury toxicity in animals.
Phytochemicals have great antioxidant potential and are of great interest due to their beneficial effects on health of human beings, and they give immense health benefits to the consumers.The effects of phytochemical-rich foods on bioaccessibility of mercury in fish tissue (the amount of mercury that is released from fish into gastrointestinal tract fluid following a simulated digestion) were investigated using an in vitro digestion.
To know more about Mercury :-
brainly.com/question/9418447
#SPJ4
g give the cell notation for a voltaic cell consisting of a metallic iron electrode immersed in a solution of fecl2, and a metallic copper electrode immersed in aqueous cu(no3)2
For a voltaic cell made up of a metallic iron electrode submerged in a fecl2 solution, Fe(s)/Fe(aq)3+ is the anode and Cu2+/Cu(s) is the cathode. An electrochemical cell in which an electric current.
Is produced by spontaneous Oxidation-Reduction reactions is known as a galvanic cell or voltaic cell, respectively named after the scientists Luigi Galvani and Alessandro Volta. The term "electrode" refers to a conductor that is used to make electrical contact with a non-metallic component of a circuit. The cathode is the electrode from which a conventional current exits a polarised electrical device. The acronym CCD, short for Cathode Current Departs, can help you remember this definition. The movement of positive charges is referred to as a conventional current.
Learn more about voltaic cell here
https://brainly.com/question/1370699
#SPJ4
The shape of the water molecule is unique with two hydrogen ions bonded to the side of the oxygen ion. This give water several unique properties. Select four of them.-Cohesion-Polarity-High specific heat-Adhesion-Colorless-Drinkable-Transparent
Water has some emergent properties that have a significant impact on life on Earth as a result of the extensive hydrogen bonding. These characteristics include ice's ability to float, cohesion, adhesion, high surface tension, high specific heat, and high heat of vaporization.
The ability of water to dissolve polar molecules, its high heat capacity and heat of vaporization, its cohesive and adhesive qualities, and its dissociation into ions that generate pH are just a few of water's unique properties.
Learn more about the polar molecules,
https://brainly.com/question/11332791
#SPJ4
6. A pigeon was 240 meters south of an apartment building. The pigeon then flew north at a constant
velocity, and in 15 seconds, it had flown halfway to the apartment building. What was the pigeon's
velocity?
The pigeon's velocity is 68.62 m/s.
How to calculate velocity?Velocity in physics is a vector quantity that denotes the rate of change of position with respect to time, combining speed with a directional component.
The velocity of an object can be calculated using one of the equations of motion as follows:
v² = u² + 2as
According to this question, a pigeon was 240 meters south of an apartment building. The pigeon then flew north at a constant velocity, and in 15 seconds, it had flown halfway to the apartment building. The velocity of the pigeon can be calculated as follows;
v² = 0² + 2(9.81)(240)
v² = 4707.8
v = ✓4708.8
v = 68.62m/s
Therefore, 68.62 m/s is the pigeon's velocity.
Learn more about velocity at: https://brainly.com/question/18084516
#SPJ1
EXPERIMENT
2:
Kelly and Jack are playing in the park. Jack rolls a marble down the small playground slide.
Kelly proposes the idea that the marble would travel at a faster pace if it is rolled down the longer slide. This
discussion leads to the following scientific question. What happens to the speed a marble travels when the
height of a ramp is changed?
Read the question that Kelly and Jack were trying to answer with their experiment and then write a
possible hypothesis for this experiment.
Hypothesis:
The hypothesis of the experiment is that; The speed a marble travels changes when the height of a ramp is changed.
What is the hypothesis?We know that when we talk about the hypothesis, we are referring to a tentative explanation of a statement that has been made. The hypothesis is the statement that forms the basis for the experiment that we want to carry out.
In this case, we have the idea that the marble would travel at a faster pace if it is rolled down the longer slide and the research question is; What happens to the speed a marble travels when the height of a ramp is changed?
Learn more about hypothesis:https://brainly.com/question/29519577
#SPJ1
