Answer:
the anion of a salt is able to react with a H+ ion to form a weak acid, it can be removed from the solution by adding an acid. For CuBr adding H+ forms HBr and that is a weak acid; therefore, CuBr is more soluble in acid than in water:
which lewis electron-dot diagram represents the bonding in potassium iodide
The lewis electron-dot diagram which represents the bonding in potassium iodide, KI is give in image attached.
The correct answer choice is option 1.
What is meant by lewis electron-dot diagram?The lewis structure can simply be defined as those diagrammatic chemical representations which describes the bonding between atoms in a particular molecular structure of a chemical substance. From the context of the above given task, the structure is bonded by eight different electrons.
The importance of lewis electron-dot structures cannot be overemphasized. Some of its significances are as follows:
It helps to us understand how chemical substances are bonded or how they bond.It also shows how electrons are arranged It gives us an indepth knowledge of arrangement of valence electrons of a molecule.In conclusion, we can now confirm from the explanation given above that potassium iodide is solid chemical compound.
The complete image of the options of the question is also attached.
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What happens to the pressure of a gas in a lightbulb a few minutes after the light is turned on?
The pressure of a gas in a lightbulb increases a few minutes after the light is turned on.
Pressure is defined as the force exerted by one substance on another per unit area. The force that perhaps the gas applied in such a way on the jar boundaries is defined as gas pressure. Gas molecules move at random across the given volume.
They come into conflict with the surface as well as each other during this movement. Each individual gas molecule's impact is too small and challenging to visualize. However, the combined impact of all gas molecules encompasses the gas pressure.
The larger the number of collisions, the greater the pressure.The average linear momentum of either a gas's moving molecules is then measured by its pressure. The pressure performs perpendicular to the wall constituent of both forces is determined by the viscosity of the gas.
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If a dextrose solution had an osmolarity of 100 mosmol/l, what percentage (w/v) of dextrose (mw = 198.17) would be present?
The percentage (w/v) of dextrose in the solution is approximately 1.9817%. To determine the percentage (w/v) of dextrose in a solution with a given osmolarity, we need to calculate the amount of dextrose present in 100 mL of the solution.
First, we convert the osmolarity from mosmol/L to mosmol/100 mL:
100 mosmol/L = 100 mosmol/100 mL
Next, we calculate the number of moles of dextrose present in 100 mL of the solution:
Number of moles = Osmolarity (in mosmol/100 mL) / 1000
Number of moles of dextrose = 100 mosmol/100 mL / 1000 = 1 mosmol/100 mL
Now, we can calculate the mass of dextrose present in 100 mL of the solution:
Mass of dextrose = Number of moles of dextrose * Molecular weight of dextrose
Mass of dextrose = 1 mosmol/100 mL * 198.17 g/mol = 1.9817 g/100 mL
Finally, we can calculate the percentage (w/v) of dextrose:
Percentage (w/v) = (Mass of dextrose / Volume of solution) * 100
Percentage (w/v) = (1.9817 g/100 mL / 100 mL) * 100 = 1.9817%
Therefore, the percentage (w/v) of dextrose in the solution is approximately 1.9817%.
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How do minerals differ from ores?
Ores: metal/coal (iron, gold, coal)
Mineral: not metal, (Granite, limestone,
Other than carbon being relatively small, what is another reason that carbon can form so many compounds? the ability to form four covalent bonds the ability to change shape the ability to form a diatomic molecule the ability to split its electrons
Answer:
Ability to form four covalent bonds.
Explanation:
Carbon is the first member of group 14. It is essentially a nonmetal. It is a small atom which regularly exhibits tetra valency. This means that carbon is able to form four covalent bonds to four chemical species which may be the same or different each time. This leaves room for many different possible combination patterns of carbon with other chemical species.
Hence carbon forms a very large number of compounds due to its small size and its ability for form four covalent bonds to other chemical species in any bonding situation.
Answer: the ability to form four covalent bonds
Explanation:
The least abundant gas in the air is
a. Xenon, Xe
b. Oxygen, O2
c. Water, H2O
d. Nitrogen, N2
Answer:
A.
Explanation:
Two or more than two atoms with different physical or chemical properties can not combine together to form an element. Xenon(Xe ) is the least abundant element on the earth. The correct option is option A.
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.
Oxygen, water, and nitrogen are the most abundant molecule on the earth. Xenon is the least abundant amongst all given option. Xenon belongs to noble gas family. So, Xenon is not reactive at all. Xenon does not form any compound with any other element so its abundance on earth is very less.
Therefore, Xenon(Xe ) is the least abundant element on the earth. The correct option is option A.
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PLEASE HELP!!!!!
4 Fe + 3 02 ---------- 2 Fe2 03
In this chemical equation, how many atoms does the product represent?
10
12
7
4
Answer:
10
Explanation:
Answer:
12
Explanation:
4x3=12
balance the following chemical equation by providing the correct coefficients fe+h2so4 fe(so4)3 + h2
help me please
Answer:
2Fe + 3H2SO4 + Fe2(SO4)3+ 3H2
Explanation:
1. Fe (SO4) 3 is an incorrectly written formula because iron is trivalent as we can see by this three ahead of SO4. SO4 is divalent always.
2. since (SO4) is 3, this three shows us that there must be 3 in the reactants as well.
so now there is 3H2SO4
3. Since we have added 3 to one hydrogen we must add another. So now it's 3H2
4. and finally iron. In Fe2 (SO4) 3 we see this 2 in front of Fe which means it goes 2Fe.
According to the quantum theory, the size of an atomic orbital is most directly associated with?a) the principle quantum number(n)b) the angular momentum quantum number(I)c) the magnetic quantum number(ml)d) the spin quantum number(ms)e) the angular momentum and magnetic quantum numbers, together
According to quantum theory, the size of an atomic orbital is most directly associated with the principle quantum number (n). The correct option is a).
The principle quantum number describes the energy level of an electron in an atom, and as the value of n increases, the electron's energy and distance from the nucleus also increase. This means that the larger the value of n, the larger the size of the orbital.
The other quantum numbers, such as the angular momentum quantum number (l), the magnetic quantum number (ml), and the spin quantum number (ms), are all related to other properties of the electron, such as its shape, orientation, and spin, but they do not directly influence the size of the orbital.
Therefore, the principle quantum number is the most important factor in determining the size of an atomic orbital according to quantum theory.
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Which substance is completely consumed in a chemical reaction?.
Can someone plz help me with this one problem plzzzzz I’m being timed!!!
Answer:
answer : the penguins do
How many liters are in 17.5 g of potassium sulfate?
Answer:
66.24 liters
Explanation:
A 10.-liter flask at a given temperature and pressure contains 6.0 × 1023 molecules of hydrogen gas. Under the same conditions of temperature and pressure, how many molecules would a 10.-liter flask of nitrogen gas contain?
Answer:
The same number of molecules, 6.0 × 10²³ molecules.
Explanation:
The amount of any given gas that can be stored in a container depends on the temperature, pressure and volume of the container. It does not depend on the nature (or identity) of the gas.
So if a 10-liter flask contains 6.0 × 10²³ molecules of hydrogen gas, it will contain the same amount of molecules of any other gas when temperature and pressure remain constant.
A student was asked to formulate a hypothesis about what would happen if 100. mL of 0.1 M NaOH(aq) at
25°C was combined with 100. mL of 0.1 M MgCl₂(aq) at 25°C. Which of the following hypotheses indicates
that the student thought a chemical change would occur?
Answer:
There will be the formation of a Common salt (NaCl) and Mg(OH)2 which is a base after the reaction between the two chemicals
Which of the following particles are found in the nucleus of an atom? (Select all that apply).electronsprotonsneutronscompounds
Answer:
protons and neutrons
Explanation:
Neutrons and protons are the particles that are found in the nucleus of an atom.
What are protons and neutrons?Protons and neutrons are subatomic particles. They are present in the nucleus of an atom and constitute most of the mass of the atom. There are three kinds of subatomic particles that are present in an atom.
These are -
Electrons: Electrons are negatively charged particles. These are present in the atomic shells of the atom. The number of electrons in the last shell of the atom constitutes the valency of the atom. Protons: Protons are positively charged particles. These are present in the nucleus of the atom.Neutrons: Neutrons are neutral molecules with no charge. These are also present in the nucleus of the atom.Since most of the mass of the atom, in the form of protons and neutrons, is present in the nucleus, the mass number is denoted as the sum of the number of protons and neutrons. Protons and neutrons together are sometimes also called nucleons.
Therefore, neutrons and protons are present in the nucleus of an atom.
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what are the factors affecting gravity?
Gravity, as a fundamental force of nature, is influenced by several factors. The following are some of the key factors affecting gravity:
Mass: The most significant factor affecting gravity is the mass of the objects involved. According to Newton's law of universal gravitation, the gravitational force between two objects is directly proportional to the product of their masses. Greater mass leads to a stronger gravitational force.Distance: The distance between two objects also plays a crucial role in the strength of gravity. According to the inverse square law, the gravitational force decreases as the distance between objects increases. As objects move farther apart, the gravitational attraction between them weakens.Gravitational Constant: The gravitational constant, denoted by G, is a fundamental constant in physics that determines the strength of the gravitational force. It is a universal constant and does not change, affecting the overall magnitude of gravity.Shape and Distribution of Mass: The distribution of mass within an object can influence the gravitational field it generates. Objects with a more compact and concentrated mass distribution will have a stronger gravitational pull compared to those with a more spread-out mass distribution.External Influences: Gravity can be influenced by external factors such as nearby celestial bodies or the presence of other forces. For example, the gravitational interaction between the Earth and the Moon affects tides on Earth's surface.Which of these processes helps extract energy from food?
Answer: Proteins extract the energy from food via Enzymes.
A sample of hydrogen gas was collected over water. If the total pressure
was 50.5 kPa, what would be the pressure of the dry gas alone if you
know that the pressure of water vapor is 2.8 KPa?*
87.6
O 53.3
O 47.7
O 141.4
In a solution with a pH of 3 a. Litmus Is blue and phenolphthalein is colorless b. Litmus is blue phenolphthalein is red c. Litmus Is red phenolphthalein is colorless d. Litmus is red phenolphthalein is red.
Answer
c. Litmus Is red phenolphthalein is colorless
Explanation
A solution with a pH of 3 is acidic. The main use of litmus is to test whether a solution is acidic or basic, blue litmus turns red under acidic conditions, and red litmus turns blue under basic or alkaline conditions. Phenolphthalein is often used as an indicator in acid–base titrations. phenolphthalein, it turns colorless in acidic solutions and pink in basic solutions.
Therefore, the correct option for a solution with a pH of 3 is:
c. Litmus Is red phenolphthalein is colorless
c−fc−f , o−fo−f, li−fli−f rank bonds from highest polarity to the lowest. to rank bonds as equivalent, overlap them.
The bonds ranked from highest to lowest polarity are: c−fc−f, o−fo−f, li−fli−f.
1. Identify the bonds: The given bonds are c−fc−f, o−fo−f, li−fli−f.
2. Determine the polarity: To rank the bonds based on polarity, we need to consider the electronegativity difference between the atoms involved in each bond. The greater the electronegativity difference, the higher the polarity.
3. Compare the electronegativity: The electronegativity values of carbon (C), fluorine (F), oxygen (O), and lithium (Li) are as follows: C (2.55), F (3.98), O (3.44), Li (0.98).
4. Rank the bonds:
- c−fc−f: The electronegativity difference is 3.98 - 2.55 = 1.43.
- o−fo−f: The electronegativity difference is 3.98 - 3.44 = 0.54.
- li−fli−f: The electronegativity difference is 3.98 - 0.98 = 3.00.
Therefore, ranking the bonds from highest to lowest polarity, we have: c−fc−f, li−fli−f, o−fo−f.
5. Overlapping equivalent bonds: If we want to rank the bonds as equivalent, we need to consider their overlapping. Overlapping occurs when two or more bonds share the same electronegativity difference.
In this case, none of the bonds have the same electronegativity difference. Therefore, we cannot rank them as equivalent by overlapping.
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The ranking is: Li-F, C-F and O-F (equivalent) based on highest to lowest polarity.
To rank the bonds from highest to lowest polarity, we need to consider the electronegativity difference between the atoms in each bond. The higher the electronegativity difference, the higher the polarity of the bond.
1. Li-F: This bond has the highest polarity because lithium is a metal and fluorine is a highly electronegative non-metal. The electronegativity difference is the highest in this bond.
2. C-F: This bond has a high polarity because carbon is less electronegative than fluorine, but still has a significant electronegativity difference.
3. O-F: This bond has a lower polarity than C-F because oxygen is more electronegative than carbon, but less electronegative than fluorine.
If we were to overlap the C-F and O-F bonds, we would see that they have similar polarity and could be considered equivalent. Therefore, the ranking would be:
1. Li-F
2. C-F and O-F (equivalent)
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How many grams are there in 0.37 moles of H20?
Answer:
18.01528 gram using the molecular weight calculator and the molar mass of H2O.
Explanation:
When frictional forces do work on an object or mechanical system, what form of energy is always produced?
Draw the atomic structure of sodium with its electronic configuration.
here you go. kindly check attatchement
what is the full electron configuration for aluminum?
Answer:
here
Explanation:
1s22s22p63s23p1.
Which one of the following molecules and ions will have a planar geometry? Group of answer choices. BrF3. PF6-. SO4^2-. SF4. NH3.
Out of the given molecules and ions, sulfate ion will have a planar geometry.
To determine the geometry of a molecule or ion, we consider its central atom's electron domains (regions of electron density) and their arrangement. Electron domains include both bonding electrons (between atoms) and lone pairs (non-bonding electrons).
1. Bromine trifluoride - Central atom: Br; Electron domains: 5 (3 bonding, 2 lone pairs); Geometry: T-shaped, not planar.
2. Hexafluorophosphate ion - Central atom: P; Electron domains: 6 (6 bonding, 0 lone pairs); Geometry: Octahedral, not planar.
3. Sulfate ion - Central atom: S; Electron domains: 4 (4 bonding, 0 lone pairs); Geometry: Tetrahedral; All oxygens are in the same plane, so it is considered planar.
4. Sulfur tetrafluoride - Central atom: S; Electron domains: 5 (4 bonding, 1 lone pair); Geometry: See-saw, not planar.
5. Ammonia - Central atom: N; Electron domains: 4 (3 bonding, 1 lone pair); Geometry: Trigonal pyramidal, not planar.
Among the given molecules and ions, only sulfate ion has a planar geometry.
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Explain the effect that increasing the nacl concentration have on osmotic pressure.
Increasing the NaCl concentration will increase the osmotic pressure.
Osmotic pressure, alongside the vapor pressure depression, freezing point depression and the boiling point elevation are the colligative properties od solution.
The direction of osmotic pressure is always from the side with the lower concentration of solute to the side with the higher concentration.
π = c(NaCl) × T(NaCL) × R
π is osmotic pressure
c is concentration of solution.
T is temperature in Kelvins.
R is universal gas constant.
Greater the concentration of sodium chloride, the greater is the osmotic pressure, because the osmotic pressure and the concentratio are in direct proportion.
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anyone answer please ?
Answer:
Archimedes, Eureka!
what is a complex permanent tissue? mention the major functions of this tissue .
Answer:
Complex permanent tissue is defined as a collection of structurally dissimilar cells performing a common function or set of functions.
its functions are:
1.help in the transportation of organic material, water, and minerals up and down the plants.
2.it helps in transportation of food from leaves to other parts of plants.
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what percent of total calories should come from linoleic acid?
The American Heart Association recommends that linoleic acid should make up 5-10% of total daily calories.
linoleic acid is an essential omega-6 fatty acid that the body cannot produce on its own and must be obtained through the diet. It plays a crucial role in maintaining overall health, particularly in relation to heart health.
The American Heart Association (AHA) recommends that linoleic acid should make up 5-10% of total daily calories. This recommendation is based on the beneficial effects of linoleic acid on heart health. Studies have shown that consuming an adequate amount of linoleic acid can help lower the risk of cardiovascular diseases.
Linoleic acid is found in various plant-based oils, such as soybean oil, sunflower oil, and corn oil. These oils can be used in cooking or as dressings for salads and other dishes.
It is important to note that while linoleic acid is beneficial, the overall balance of fatty acids in the diet is also crucial for optimal health. It is recommended to consume a variety of healthy fats, including omega-3 fatty acids, in addition to linoleic acid.
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we learned how to name bicyclic compounds. using those rules, together with the rules discussed in this section, provide a systematic name for the following bicyclic compound:
The systematic name for the following bicyclic compound: 1,4-Dimethylcyclohexane[2,3-b]cyclopentane
How can we systematically name a specific bicyclic compound?To systematically name the given bicyclic compound, we follow the rules of naming bicyclic compounds and combine them with the general nomenclature rules. The compound is named as 1,4-dimethylcyclohexane[2,3-b]cyclopentane.
The name indicates that the compound consists of a cyclohexane ring fused to a cyclopentane ring with methyl substituents at positions 1 and 4 of the cyclohexane ring. The locant [2,3-b] specifies the fusion of the two rings. Following these naming conventions ensures a clear and standardized representation of the compound's structure.
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