Answer:
True
Explanation:
Valence electron:
No. of electrons present in the outermost shell of any atom is called valence electrons. Valence electrons determines the chemical properties of element.
Atomic no. of S = 16
Electronic configuration of S = [tex]1s^22s^22p^63s^23p^4[/tex]
Energy shell (n = 3) is the outermost shell
Valence electrons = 6
Atomic no. of Cl = 17
Electronic configuration of S = [tex]1s^22s^22p^63s^23p^5[/tex]
Energy shell (n = 3) is the outermost shell
Valence electrons = 7
So, sulfur has 6 valence electrons and Cl has 7 valence electrons.
The statement 'Sulfur has fewer valence electrons than chlorine.' is true.
What is the relationship between mass and the end stages of stars
Liquid alcohol will change to vapor when its temperature reaches the
Transport of glucose enters a liver cell through a protein Chanel
Which description is not a property of an acid? A turns litmus paper red B bitter taste C corrosive D dissolve metals
Answer:
Bitter Taste
Explanation:
Acids have a sour taste and Bases have a Bitter taste. Acids turn litmus paper red because their pH level is less than 7. They are corrosive and can break down materials. They can also dissolve metals. Hope this helped ú⩊ù
Salt is a compound made from sodium (Na) and chlorine (Cl). Salt : A has properties very similar to sodium. B has properties very similar to chlorine. C has very different properties from sodium and chlorine.
Answer:
it is c bc i know i was in 7th grade once lol
Explanation:
Animals, plants, fungi, and protists are made up of eukaryotic cells, which are cells that
Eukaryotic cells are found in plants, animals, fungi, and protists. They have a membrane-bound nucleus and organelles. These cells are larger in size and have additional features compared to prokaryotic cells.
Eukaryotic cells are found in plants, animals, fungi, and protists.
These cells have a membrane-bound nucleus and organelles.
They are larger in size compared to prokaryotic cells and can be unicellular or multicellular.
Eukaryotic cells are capable of both asexual and sexual reproduction.
They are characterized by features such as a semipermeable and flexible cell membrane, well defined nucleus, and the presence of membrane-bound organelles.
Animals, plants, fungi, and protists are made up of eukaryotic cells, which are cells that contain a nucleus and organelles, enclosed by a plasma membrane.
Eukaryotic cells are cells that contain a nucleus and organelles, and are enclosed by a plasma membrane.
Organisms that have eukaryotic cells include protozoa, fungi, plants, and animals.
Eukaryotic cells are more complex compared to prokaryotic cells, which lack a membrane-bound nucleus.
In eukaryotic cells, the genetic material is housed within a nucleus, and they contain various organelles such as mitochondria, which are essential for various cellular functions.
These cells are characteristic of members of the four kingdoms of Eukarya: animals, plants, fungi, and protists.
A centrifuge was used to separate a sample into its components. What conclusion about the sample can be formed based on the technique used? It was a pure substance. It was a compound. It was a heterogeneous mixture. It was a homogeneous mixture
Its Homogenous Centrifuges are used to speed up the process of separating Homogeneous mixtures.
Answer is: It was a homogeneous mixture.
For example, a centrifuge is used to separate components from blood.
This technique is also used for heterogeneous mixtures.
Centrifugation is a technique using centrifugal force to separate particles from a mixture according to their size, shape and density.
The principle is that the denser particles are forced to the bottom and the lighter particles stay at the top.
How high in meters must a column of glycerol be to exert a pressure equal to that of a 760-mm column of mercury? The density of glycerol is 1.26g/mL, whereas that of mercury is 13.6g/mL.
what happens when an electron falls to a lower energy level?
When an electron falls to a lower energy level, a photon is emitted representing the energy difference between the higher and the lower state. This process is a fundamental aspect in atomic physics and basis of many light effects.
Explanation:When an electron falls to a lower energy level, energy is released. This energy transition is represented as an emitted photon, a packet of electromagnetic energy. Based on Bohr's model, a hydrogen atom is most stable in its ground state, when an electron is in its lowest energy orbit. An atom can absorb energy, causing an electron to shift to a higher energy level, or an excited state. However, an atom usually exists in the excited state for a brief period before the electron naturally transitions back to a lower energy level, or ground state. During this decline, a photon of specific wavelength is emitted, accounting for the energy difference between initial and final energy levels.
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How does the process of waste removal in a unicellular organism compare to the waste removal in a multicellular organism
Which of the following is necessary for plants to exhibit phototropism?
A. Gravity
B. Touch
C. Auxin
D. Dormancy
Answer: C. Auxin
Explanation:
Phototropism can be define as the growth of the plant in response to the stimulus of light. The plant parts grow in direction of the sunlight this phenomena is called as positive phototropism. For example, stem. The plant parts when grow against the direction of sunlight this phenomena is called as negative phototropism. For example, root.
The auxin is a plant hormone which is responsible for phototropism. It moves to the darker side of the plant and helps the growth of the plant on that side as compared to the lighter side of the plant. This results in curving of the plant stem tip towards the light hence, results in positive phototropism.
How many grams of O are in 585 g of Li2O
The amount of oxygen in 585 g of Li2O is calculated using the molar mass of Li2O and the proportion of oxygen's molar mass to Li2O's molar mass, then multiplied by the total mass of Li2O.
Explanation:To determine how many grams of oxygen are in 585 grams of Li2O, we use the molar mass of Li2O and the molar mass of oxygen. The molar mass of Li2O (lithium oxide) is the sum of the mass of two lithium atoms and one oxygen atom. One mole of Li2O weighs approximately 29.88 g/mol (2 x 6.94 + 16.00), and one mole of oxygen weighs 16.00 g/mol.
To find the mass of oxygen in Li2O:
First, find the moles of Li2O in 585 g: Moles of Li2O = 585 g / 29.88 g/molNext, find the grams of oxygen in that amount of Li2O moles using the molar mass of oxygen: 16.00 g/mol.Multiply the moles of Li2O by the molar mass of oxygen.Therefore, to calculate the exact grams of oxygen in 585 g of Li2O, you use the proportion of oxygen's molar mass to Li2O's molar mass, which is 16.00/29.88. Multiply this by the given mass of Li2O to find the mass of just the oxygen part:
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To determine the grams of oxygen in 585 g of Li₂O, first calculate the molar mass of Li₂O, find the number of moles in 585 g, and then convert the moles of oxygen to grams. The final result is 335.84 grams of oxygen.
To find the number of grams of oxygen in 585 g of Li₂O, we need to follow these steps:
Determine the molar mass of Li₂O by summing the atomic masses of its elements: Lithium (Li) has an atomic mass of 6.94 g/mol and Oxygen (O) has an atomic mass of 16.00 g/mol. Thus, the molar mass of Li₂O is: (2 * 6.94 g/mol) + 16.00 g/mol = 27.88 g/mol.Calculate the number of moles of Li₂O in 585 g: Number of moles = Mass / Molar Mass = 585 g / 27.88 g/mol = 20.99 moles of Li₂O.Since there is 1 mole of oxygen in each mole of Li₂O, there are 20.99 moles of O in 20.99 moles of Li₂O.Convert moles of O to grams by multiplying the number of moles by the atomic mass of O: Mass of O = Number of moles * Atomic Mass = 20.99 moles * 16.00 g/mol = 335.84 g.Therefore, there are 335.84 grams of oxygen in 585 grams of Li₂O.
Is the following chemical equation balanced? 2Na + 2H2O 2NaOH + H2
yes because you have 2 H 2Na 2O on both sides
Answer : Yes, the given chemical reaction is balanced equation.
Explanation :
Balanced chemical reaction : It is defined as the number of atoms of individual elements present on reactant side must be equal to the product side.
The given chemical reaction is,
[tex]2Na+2H_2O\rightarrow 2NaOH+H_2[/tex]
In this reaction, there are 2 atoms of sodium, 4 atoms of hydrogen and 2 atoms of oxygen are present on both side of the reaction. So,
This chemical reaction is a balanced reaction because in this reaction, the number of atoms of sodium, hydrogen and oxygen are balanced on the side of the reaction.
Hence, yes the given chemical reaction is balanced equation.
Make a connection between bacteria and extreme environment
Sodium has more valence electrons than magnesium. True or False
What is the 3rd noble gas
WHAT ARE NEWTON'S 3 LAW'S
Final answer:
Newton's three laws of motion are fundamental principles in classical mechanics, explaining how objects behave under various forces. The first law, or law of inertia, says objects maintain their state of motion unless acted upon by an external force. The second law relates force, mass, and acceleration, while the third law states that every action has an equal and opposite reaction.
Explanation:
Isaac Newton's three fundamental laws of motion form the basis for classical mechanics, describing the relationship between a body and the forces acting upon it. The laws are integral to our understanding of interactions and forces in physics.
Newton's first law, also known as the law of inertia, asserts that an object at rest will stay at rest, and an object in motion will stay in motion at a constant velocity unless acted upon by an external force. Newton's second law advances this concept by stating that the acceleration of an object is directly proportional to the net force acting upon it and inversely proportional to its mass. Lastly, Newton's third law establishes that for every action, there is an equal and opposite reaction, meaning that forces between two interacting objects are equal in magnitude and opposite in direction.
Why is it important to dispose of wastes from nuclear power plants carefully? A) The wastes cause the greenhouse effect. B) The wastes are radioactive and could cause cancer. C) The wastes do not decompose and take up a lot of space. D) The wastes flow into ponds and lakes and cause algal bloom.
Franklin ordered 6 boxes of popsicles for a pool party. each box had 20 popsicles. there will be 50 guests at the party. which can we use to find the number of popsicles (p) each person can have if they are divided equally between the guests
Answer:
ok so the answer is 6×12÷24= THE Answer if u were look for this
Explanation:
SO IN KHAN I DID IT AND I GOT IT RIGHT
THX PERSON
The BEST example of diffraction is the image of
Question 8 options:
a ring around the Sun caused by particles in the air.
a pencil that appears broken in a glass of water.
a fingerprint that appears to be enlarged under a magnifying glass.
your image in a mirror
Answer: The answer is the ring around the sun created by particles.
Explanation:
Answer:
the first one
Explanation:
i think it is it sound better sense to me
The amount of energy in the bonds of the reactants plus any energy absorbed equals the amount of energy in the bonds of the products plus any energy _____.
How does the law of conservation of mass apply to this reaction C2H4 + O2 > 2H2O + 2CO2
science question down below
what is the density of object with volume of 20 ml and a mass of 5 grams?
The sales tax rate is 8%. If Jim bought a new Buick and paid a sales tax of $1,920, what was the cost of the Buick before the tax?
Answer:
$24000
Explanation:
We are given that
Sales tax=8%
Sales tax amount=$1920
We have to find the cost of the Buick before the tax.
Let x be the cost of Buick before the tax.
According to question
8% of x=1920
[tex]\frac{8}{100}\times x=1920[/tex]
[tex]x=\frac{1920}\times \frac{100}{8}[/tex]
[tex]x=24000[/tex]
Hence, the cost of the Buick before the tax=$24000
Which of the following techniques can be used to separate a homogeneous mixture into its component parts?
Sort by color
Sort by size
Separation by density
Use magnetism
The right is Separation by density .
Take the blood which is a good example of a heterogeneous mixture.
Blood is a vital liquid in our body, which transports oxygen from the air to our lungs so we can breathe. It is also used to eject wastes, such as carbon dioxide, to bring cells and molecules of the immune system to the tissues, and to spread hormones throughout the body. It corresponds to plasma, red blood cells, white blood cells, platelets and hemoglobins combined.
In medical tests centrifugal force is used to separate the different components of the blood.
In general, the centrifugation will allow to separate and analyze the different components of the blood, to know if the rate of white blood cells in the blood of a patient, for example, is normal, and therefore to know if his system Immune is integrity.
Under the action of centrifugal force, the solid components in the blood are drawn to the bottom of the tube in which the blood is contained. The centrifugal force then acts as an accelerated settling. It separates plasma from red blood cells and white blood cells.
Answer:
The answer is seperation by density! Hope this helped
Explanation:
why can an automobile use gasoline for power????
1.potential energy is stored in the gasoline
2.kinetic energy is stored in the gasoline
3.static energy is stored in the gasoline
4.nuclear energy is stored in the gasoline
Why is the air warmer than the water in a pool on a hot sunny morning? due to surface tension because of water’s specific heat because of capillary action due to water’s solvent properties
The air is warmer than the pool water because water has a high specific heat, requiring more energy to increase its temperature than air does. Option B is correct.
Specific heat is the amount of energy required to raise the temperature of a substance. Water has a high specific heat, which means it takes more energy to increase its temperature compared to air. This property allows water to absorb a lot of heat without a significant rise in temperature, hence it often feels cooler than the air on a sunny day.
Furthermore, it's also worth noting that this high specific heat of water plays a crucial role in Earth's climate and helps to moderate temperatures.
Hence, B. is the correct option.
The complete question is:
Why is the air warmer than the water in a pool on a hot sunny morning?
A) due to surface tension
B) because of water’s specific heat
C) because of capillary action
D) due to water’s solvent properties
Josie bought a soda and 2 candy bars the soda cost $1.10 her bill was $2.40. how much was her candy bar?
What is an astronomical unit? Why is this unit used to measure distances in the solar system?