Answers
Answer:
The strong forces oppose the electromagnetic force of repulsion between protons. Like ”glue” the strong force keeps the protons together to form the nucleus. The strong forces and electromagnetic forces both hold the atom together.
Explanation:
Hope This helps
Answer:
The strong forces oppose the electromagnetic force of repulsion between protons.
Related Questions
10. When dissolved in water, most Group 1 metal salts can be described as
strong electrolytes.
strong acids.
weak electrolytes.
A
B
C
D
non-electrolytes.
(1)
Answers
When dissolved in water, most Group 1 metal salts can be described as strong electrolytes.
When Group 1 metal salts are dissolved in water, they can be described as strong electrolytes. This is because Group 1 metals, such as lithium (Li), sodium (Na), potassium (K), and so on, readily lose their outermost valence electron to form positive ions (cations). These cations then dissociate completely in water, separating from the anions to which they were originally bonded.
The dissociation of Group 1 metal salts in water results in the formation of positively charged metal ions and negatively charged non-metal ions (anions). These ions are free to move and conduct electric current, making the solution a good conductor of electricity. The complete dissociation of Group 1 metal salts in water and the presence of freely moving ions make them strong electrolytes.
Strong electrolytes are substances that ionize completely or almost completely in solution, producing a high concentration of ions. This is in contrast to weak electrolytes, which only partially ionize and produce a lower concentration of ions.
In summary, when Group 1 metal salts are dissolved in water, they form strong electrolytes due to their ability to dissociate completely into ions, leading to a high concentration of freely moving ions in the solution, thus enabling efficient electrical conductivity.
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How can I describe the bonding type (metallic, ionic, covalent) of the following compounds? And how can I tell which ones are covalent and ionic bonding? (organic chemistry course)
a) H2O
b) SOCl2
c) Mg
d) CH4
e) CaCl2
f) Na2CO3
g) CH3MgBr
h) CO2
i) Zn(OH)2
j) C4H9Li
k) KO2CCH3
Answers
Explanation:
Usually, metallic bonding is present in metallic elements (E.g Mg). Metallic bonding is described as the attracrion between positive ions and the sea of delocalised electrons.
covalent bonding are usually found in compounds containing only non-metal elements (E.g H20, CO2). Covalent bonding is formed by sharing of electrons.
Ionic bonding is found in compounds containing both metals and non metal elements. (E.g ZnOH2). It is the electrostatic force of attraction between positive and negative charges. Salts are usually ionic compounds.
PLEASE HURRY!! WILL GIVE BRAINLIEST!!!!
Answers
Answer:
a
Explanation:
D. The density of cork is approximately 0.24 g/cm^ 3 Convert this density to nanograms per cubic millimeter
Answers
Answer:
D
Explanation:
Because jwbahaggagqhhwjwjja
4.
What do water vapor, liquid
water, and ice have in
common?
a. The same crystal lattice structure
b. The same amount of energy
c. The same physical properties
d. The same chemical properties
Answers
Answer:
D.)
Explanation:
Water, also known as H2O in chemistry, is a chemical substance.
Water vapor is the gas form of water, also known as the effect of evaporation. Ice is made up of water as well. It is the frozen version of water, or it other terms, the solid form of it.
I hope that this helps.
Which of the following conclusions can be drawn from the curves in the
energy diagram?
OA. The reaction represented by curve B will go faster than the curve A
reaction.
OB. The molecules represented in curve A have higher kinetic energy
than curve B.
C. The reaction represented by curve B has a larger equilibrium
constant than curve A.
OD. The reaction represented by curve A requires less added energy
than curve B.
SUBMIT
Answers
OD. The reaction represented by curve A requires less added energy than curve B.
Curve A represents an exothermic reaction because the products have less energy than the reactants, and curve B represents an endothermic reaction because the products have more energy than the reactants. The difference in energy between the reactants and products in curve A is less than the difference in energy between the reactants and products in curve B, which means that less energy is required to reach the transition state in curve A than in curve B. Therefore, curve A requires less added energy than curve B.
Option A is incorrect because the speed of a reaction is not determined by the shape of the energy diagram.
Option B is incorrect because the shape of the curves does not provide information about the kinetic energy of the molecules.
Option C is incorrect because the size of the equilibrium constant is not determined by the shape of the energy diagram.
A compound is found to contain 9.227 % boron and 90.77 % chlorine by mass. What is the empirical formula for this compound?
Answers
Assuming a 100 g sample of the compound, we can convert the mass percentages to masses in grams:
- 9.227 g B
- 90.77 g Cl
Next, we need to convert these masses to moles using the atomic masses of the elements:
- B: 10.81 g/mol
- Cl: 35.45 g/mol
- 9.227 g B ÷ 10.81 g/mol = 0.853 mol B
- 90.77 g Cl ÷ 35.45 g/mol = 2.562 mol Cl
Now we need to divide both mole values by the smaller of the two, which is 0.853 mol:
- 0.853 mol B ÷ 0.853 mol = 1.000 mol B
- 2.562 mol Cl ÷ 0.853 mol = 3.000 mol Cl
This gives us a B:Cl ratio of 1:3. The empirical formula for the compound is therefore BCl3.
Answer:
Empirical formula of a compound means that it provides simplest ratio of whole number.
Explanation:
Mass of boron and chlorine is 9.224% and 90.74%
The element lithium (Li) has 3 protons and 3 electrons. The element fluorine (F) has 9 protons and 9 electrons. An atom of the element lithium (Li) transfers an electron to an atom of the element fluorine (F). Which type of bond results between the atoms, and what happens to the charges in each of the atoms?
Answers
Answer:ionic bond
Lithium becomes +ve while FL becomes-ve
Explanation:bond btwn a metal and a none metal is called an ionic bond
Li loses one therefore it's+ve FL gains becoming -ve
what is meant by the rate of a reaction?
A. How Far to completion the reaction goes
B. How much energy the reaction requires
C. How Concentrated the final products are
D. How slow or fast a reaction progresses
Answers
Answer:
How slow or fast a reaction progresses
(1.7 x 10-5 m) x (3.72 x 10-4 m) *
Answers
Answer:
The answer will be 1992/5 or 398.4
ch3cl would you expect the following compound to have a dipole moment? if the molecule has a dipole moment, specify its direction. select the single best answer. ch3cl the dipole moment is oriented from the h atoms towards the cl atom. the dipole moment is oriented from the cl atom towards the h atoms. one specific direction of the dipole moment does not exist. the molecule has no dipole moment. ch3cl
Answers
CH3Cl would have a dipole moment, oriented from the H atoms towards the Cl atom.
This is because the Cl atom is more electronegative than the H atoms, so the electrons in the covalent bond between them will be pulled more towards the Cl atom. This creates an uneven distribution of charge and a net dipole moment.
CH3Cl, also known as chloromethane or methyl chloride, is a colorless, flammable gas with a sweet odor. It is a hydrocarbon, meaning it consists of hydrogen and carbon atoms, and is classified as a haloalkane due to the presence of a chlorine atom. CH3Cl is used in a variety of industrial processes, including as a refrigerant and a propellant. It is also used to produce other compounds, such as acetic acid and methylene chloride.
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5. The accepted values for density are: aluminum = 2.71 g/cm³; PE = about 0.925 g/cm³; and iron = 7.87 g/cm³. Compare your values from Question 4 with these. How do they compare? Why are they different? Note: the density of different kinds of PE and PVC vary because of the difference in the arrangements of their molecules.
Answers
Answer:Percent error=5.6%
Explanation:
Which of the following is a chemical change?
A. Melting ice
B. Boiling water
C. A burning candle
D. Frost forming inside a freezer
Answers
Answer: C: A burning candle
Explanation:
C is a Combustion reaction and this is a chemical change.
The rest are physical changed because they are only changing state.
The amount of energy required to raise the temperature of 1 kilogram of a substance by 1 kelvin is called its
Answers
I hope it'll help
thanks...
Which element has chemical properties most similar to sodium? a. magnesium b. oxygen c. phosphorus d. rubidium
Answers
The element that has chemical properties most similar to sodium is d. rubidium.
What is rubidium?
Rubidium is in the same group (group 1) as sodium in the periodic table and has similar chemical properties, such as reactivity with water and the tendency to form ionic compounds with halogens. Magnesium, oxygen, and phosphorus are not in the same group as sodium and have different chemical properties.
What is periodic table?
The periodic table is a tabular display of all known chemical elements, arranged according to their atomic structure and properties. It is arranged in rows and columns, with elements placed in order of increasing atomic number, which is the number of protons in an atom's nucleus. The periodic table is a powerful tool for predicting the chemical behavior of elements and for understanding the relationships between different elements. It is used extensively in chemistry, physics, and other sciences to help understand the properties and behavior of different elements, and to guide research and development in many different fields.
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Isolation and modification of cellulose from melon seed coat
Answers
Isolating and modifying cellulose from a melon seed coat involves several steps. Here's a general outline of the process:
Seed Coat Removal ; Cleaning ; Drying ; Grinding ; Cellulose Extraction ; Cellulose Modification.
Seed Coat Removal: Start by separating the melon seed coat from the seeds. This can be done by manually peeling or cutting away the outer coat.
Cleaning: Wash the seed coat thoroughly to remove any dirt, debris, or other impurities.
Drying: After cleaning, allow the seed coat to dry completely. This can be done by spreading it out on a clean surface and leaving it to air dry or using a low-temperature oven.
Grinding: Once the seed coat is dry, grind it into a fine powder. This can be achieved using a blender, food processor, or mortar and pestle.
Cellulose Extraction: Extract cellulose from the powdered seed coat using a chemical or enzymatic method. One common approach is the acid hydrolysis method:
a. Prepare a solution of dilute acid (such as hydrochloric acid) and add the powdered seed coat to it.
b. Heat the mixture under controlled conditions, typically around 60-80°C, for a specific duration.
c. Filter the mixture to separate the cellulose residue from the liquid acid solution.
d. Wash the cellulose residue with water multiple times to remove any remaining acid or impurities.
e. Dry the cellulose thoroughly, either through air drying or using a low-temperature oven.
Cellulose Modification: The isolated cellulose can be modified to enhance its properties or functionality. This step can include processes such as chemical derivatization or physical treatments. For example, cellulose can be chemically modified by esterification or etherification to introduce new functional groups.
It's important to note that the specific conditions and methods for isolation and modification may vary depending on the desired characteristics of the cellulose and the intended applications.
Additionally, proper safety precautions and adherence to applicable regulations should be followed when working with chemicals and equipment during the process.
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benzen has a boiling point of 80.10 c we know the change in boiling point for a solution of c6h14 in benzen is 2.25 what is the new boiling point for the solution
bp= ? c
Answers
The pressure of the environment affects the liquid's boiling point. The boiling point of the liquid is higher when it is under high pressure than when it is under normal atmospheric pressure. For a given pressure, various liquids have different boiling points.
The temperature at which a liquid's vapour pressure equals the surrounding atmosphere is known as the boiling point of the liquid. This temperature causes the liquid to become a vapour.
The temperature of the liquid, the pressure of the atmosphere, and the pressure of the vapour all affect its boiling point.
We know that change in temperature of a system is given by the following formula:
Initial boiling point (T₁) = 80.1 °C
ΔT = T₂ - T₁
2.25 = T₂ - 80.1
T₂ = 82.35 °C
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Answer:
82.35
Explanation:
acellus
Please show all of your work, I need to understand all steps:
A student collected time (t) and concentration ([A]) data at
295 K for the reaction 2A→B. These time and concentration data are shown in the table to the right. The student then plotted graphs of [A] versus t (Figure 1) , ln[A] versus t (Figure 2) , and 1/[A] versus t (Figure 3) .
Figure 1:
t (s) (A)(M) ln(A) 1/ (A)
0.00 0.500 −0.693 2.00
20.0 0.389 −0.944 2.57
40.0 0.303 −1.19 3.30
60.0 0.236 −1.44 4.24
80.0 0.184 −1.69 5.43
i.) What is the rate of the reaction?
ii.) What is the value of the rate constant for this reaction?
iii.)
Next, the student ran the same reaction at a different temperature and measured a different reaction rate, with the following results:
T(K) k(s-1)
295 0.0125
325 0.0357
What is the activation energy of this reaction?
Express your answer to three significant figures and include the appropriate units.
Answers
Answer:
a because the x and y value is the same
How many atoms are in 12 g of Carbon-12 (12C)?
Answers
There are approximately 6.022 × 10^23 atoms in 12 grams of Carbon-12 (12C).
The number of atoms in a given amount of a substance can be calculated using Avogadro's number, which represents the number of atoms or molecules in one mole of a substance. Avogadro's number is approximately 6.022 × 10^23.
Carbon-12 is a specific isotope of carbon, with an atomic mass of 12 atomic mass units (amu). One mole of Carbon-12 has a mass of 12 grams. Since one mole of any substance contains Avogadro's number of particles, in the case of Carbon-12, it contains 6.022 × 10^23 atoms.
Therefore, if we have 12 grams of Carbon-12, which is equal to one mole, we can conclude that there are approximately 6.022 × 10^23 atoms in this amount of Carbon-12.
In summary, 12 grams of Carbon-12 contains approximately 6.022 × 10^23 atoms. Avogadro's number allows us to relate the mass of a substance to the number of atoms or molecules it contains, providing a fundamental concept in chemistry and enabling us to quantify and understand the microscopic world of atoms and molecules.
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How might you know that a liquid has dissolved in a liquid?
Help
Answers
Answer:
You would see whatever liquid you added slowly disappearing
Explanation:
Hope this helps:)........if not then sorry for wasting your time and may God bless you:)
Answer:
If you take a clear cup of water and put a camera to watch it, If you time lapsed it, you would see the water slowly evaporate.
Explanation:
Hope this helped :)
03/08/2020
Question
1. (a) State the definition of a chemical formula.
(b) What does it tell about a compound?
(c) What information is conveyed by the formulation H2SO4?
Answers
Explanation:
According to your question,
no. a. ans would be like; chemical formula is defined as the an expression which determines no. and type of molecule of a compound.
b. no. ans; it tells that what type of compound is formed with the type and no. of atoms present in the atom.
c. no ans; the formulation of h2so4 states that it is acid named as hydrochloric acid which is formed by reacting of hydrogen (2 atoms ) ,sulpher (*1atom) and oxygen(4atoms).
Hope it helps...
In order to determine the magnetic properties of phosphorus atom we need to find out the number of unpaired electrons present in the ground state of phosphorus atom! Select one of the answers below that represents this number.
Group of answer choices
1
4
3
0
2
Answers
Answer:
Think of it this way If you have a phosphorus atom whats its oposites once you found that out you may be able to find the answer
Explanation:
Hope this helps :)
what is the pH of a solution with a hydronium concentration of 6.5x10^-4M?
A.)6.5
B.)4
C.)3.2
D.)10
Answers
To determine the pH of a solution based on the hydronium ion concentration, you can use the equation:
pH = -log[H₃O⁺]
where [H₃O⁺] is the concentration of hydronium ions.
In this case, the hydronium ion concentration is 6.5x10^-4 M.
Calculating the pH:
pH = -log(6.5x10^-4)
= -log(6.5) - log(10^-4)
= -log(6.5) + 4
Using a calculator or logarithmic tables, you can find that the logarithm of 6.5 is approximately 0.81.
pH ≈ 0.81 + 4
pH ≈ 4.81
Rounding to the nearest whole number, the pH of the solution is approximately 5.
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Waves of sound energy move ________ ___ ____ ___________ from the source.
Answers
Answer:
are there any options for us to choose from? or is it just fill in the blank
Waves of sound energy move in the form of vibration from the source of sound energy.
What is waves?Waves is a kind of disturbance that can travel through a medium from one point to another point.
Sound waves is also a type of wave in which energy is travelled from one point to another point through the vibration from the source of sound.
Hence energy travel in the form of vibration.
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help pls ily if u do
Answers
Answer:
Shells=2
Element=Oxygen
Nonmetals
Explanation:
An airplane attempting to fly higher than 300,000 ft will:
A. need an extra engine to counteract the additional drag.
B. generate more lift because it will weigh less.
C. need an extra engine to burn more fuel and create more thrust.
D. begin to succumb to the power of gravity because of the decrease
in lift.
SUBMIT
Answers
Answer:
D. begin to succumb to the power of gravity because of the decrease
in lift.
Explanation:
\(\huge{\textbf{\textsf{{\color{pink}{An}}{\red{sw}}{\orange{er}} {\color{yellow}{:}}}}}\)
ur answer is:-
D. Begin to succumb to the power of gravity because of the decrease in lift.
Thanks Hope it helps.Write a paragraph about chemical reactions in everyday life, that cause pollution of the environment.
Answers
Pollutants of many different forms enter the environment as a result of chemical interactions in daily living. Significant soil pollution has been brought on by mining, agriculture, and waste disposal.
What is chemical pollution?Chemical pollution is the act of contaminating the environment with chemicals that do not occur naturally.
The delicate ecosystems of the Earth's surface can be harmed by chemical pollution. Biodiversity and population food production are both impacted by soil health. Marine biodiversity has also been impacted by high or prolonged chemical exposure
Biodiversity: What is it?The diversity of animals, plants, fungi, and even microbes like bacteria that make up our ecological landscape are all included in what is known as biodiversity.
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can someone please help me and ill mark u as brainlest
Answers
Answer:
Sure i'll help u! :D
Explanation:
for #1 you do A. I'm not so sure on it tho
For #2 it should be C.
If that didn't help, You can look it up on a website. ok?
Answer:
b, then d
Explanation:
Write a scientific explanation on how food from plants provide energy for body processes.
Claim:
Evidence:
Reasoning:
Answers
Answer:
Explanation:
8) What is the density of the acid in a car battery if 250 mL of the acid has a
mass of 290 g?
Answers
1.16 g/ml is the density of the acid in a car battery if 250 mL of the acid has a mass of 290 g.
The substance's mass per unit of volume is its density (also known as specific mass or volumetric mass density).
The Latin letter D can also be used to represent density, however the most common symbol is (the lower case Greek letter rho). The mathematical definition of density is mass divided by volume.
D = m/V
where D denotes density, m denotes mass, and V denotes volume.
Although this quantity is more precisely known as specific weight when density is sometimes loosely described as its weight per unit volume.
Given
Volume of acid = 250 ml
Mass of acid = 290 g
Density of acid = ?
Density = 290 g /250 ml
= 1.16 g/ml
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