Chemistry High School
Mitosis creates 2 daughter cells which are diploid. These products are genetically identical. Meiosis produces 4 daughters cells which are haploid. These products are genetically different.
How many daughter cells are produced in meiosis?
4 daughter cells are produced in meiotic division
2 daughter cells are produced in mitotic division
How many different naturally-occurring common amino acids are there?
Twenty-two amino acids
How many electrons do two atoms in a double covalent bond share?
Explanation- Covalent bonding occurs when electrons are shared between atoms. Double and triple covalent bonds occur whenfouror six electronsare shared between two atoms, and they are indicated in Lewis structures by drawing two or three lines connecting one atom to another.
Two atoms having a double covalent bond
share 2 electrons each.
for example, H-H
each hydrogen atom shares one electron with another hydrogen atom to attain helium configuration or the nearest noble gas configuration.
How many electrons will each element gain or lose in forming an ion?
It depends on the number of valence electrons required to make octet or duplet( in case of H). For example, Nitrogen(atomic number = 7) has electronic configuration(2,5) which means nitrogen has 5 valence electrons and requires 3 more electrons to complete its octet. After gaining 3 electrons from atoms of an element with less electronegativity than N, it forms nitride ion ().Hope this helps.
How many high energy bonds does atp contain?
ATP contains TWO high energy bonds
How many moles are in 15 grams of lithium?
Moles of substance = mass of that substance/molar mass of that substance = 15/6.9 = 2.17 moles.
How many moles is 2.17 x10^23 representative particles of bromine?
The number of moles is "0.36".
According to the question,
As we know,
→ Number of moles will be:
By solving the above, we get
Thus the above answer is right.
Learn more about moles here:
6.02x10^23 representative particles = 1 mole. Therefore, 2.17x10^23 representative particles = 2.17x10^23 / 6.02x10^23 = 0.36 mole.
How many moles is 2.80 x10^24 atoms of silicon?
The moles of silicon is 4.651 moles
The moles of silicon is calculated using Avogadro's constant
that is according to Avogadro's law
1 mole = 6.02 x 10^23 atoms
? moles = 2.80 x 10 ^24 atoms of silicon
by cross multiplication
= [ ( 1 mole x 2.80 x 10^24 atoms) / ( 6.02 x 10 ^23 atoms)]
= 4.651 moles
Let x moles of silicon contains 2.8x10^24 atoms. 6.02x10^23 atoms are present in 1 mole of Si. Therefore 2.80x10^24 atoms are present in = 2.8x10^24/6.02x10^23 = 4.65 moles of Si.
How many pairs of electrons are shared in a double bond?
It shares 4 electrons
In single bond, 1 pair of electron(2 electrons) is shared,in double bond, 2 pairs of electrons(4 electrons) are sharedand in triple bond, 3 pairs of electrons( 6 electrons) are shared. Hope this helps.
How many phases are in the cell cycle as shown in the diagram in model 1?
There should be a diagram that should accompanied in your question above. I manage to check the diagram from other sources. The numberphases are in the cell cycle as shown in the diagram in model 1 is 4.
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
How many times does the cell divide during mitosis?
Each cell when they are divided by mitosis will make 2 daughter cells
In the nitrogen cycle, bacteria combine nitrogen gas with hydrogen to form ammonia in a process called
In the nitrogen cycle, bacteria combine nitrogen gas with hydrogen to form ammonia in a process called nitrogen fixation. Itis a process by whichnitrogen(N2) in the Earth's atmosphere is converted into ammonia (NH3). Hope this answers the question. Have a nice day.
The answer to this for study island people is Nitrogen Fixation
Is the effect of adding bonded atoms and lone pairs to the central atom similar
The effect of adding bonded atoms and lone pairs to the central atom are not similar.
The shape of a molecule is determined by the number of electron pairs that surround the central atom in the molecule. These electron pairs could bond pairs or lone pairs.
Lone pairs occupy more space around the central atom and lead to a greater repulsion than bond pairs. As such, addition of lone pairs to the central atom would cause the molecule to become "squeezed". The bond angle in the molecule will be lower than expected when lone pairs are added due to the higher repulsion.
Learn more: brainly.com/question/22824409
I would say that theeffect of adding bonded atoms and lone pairs to the central atom would not be similar. Atoms and lone pairs are different things and they would affect the shape differently depending on the atoms involved. Hope this answers the question. Have a nice day.
The chemical standard for the quantity of a mole is based on which substance
The chemical standard for the quantity of a mole is based on the element carbon.It is defined as theamountof achemical substancethat contains as manyelementary entitiesas there are atoms in 12gramsofcarbon-12. Hope this answers the question.
What are the only elements that exist in nature as uncombined atoms?
Noble Gases (Group 0) as these have a full outer shell so doesn't need to gain or lose any electrons.
What are the reactants and products in a chemical reaction?
Answer : The species present on the left side of the right arrow in the reaction are known as reactant and the species present on the right side of the right arrow in the reaction are known as product.
Balanced chemical reaction : It is defined as the reaction in which the number of atoms of an individual elements present on reactant side must be equal to the product side.
The reactant and product species present in the reaction are separated by right arrow.
The species present on the left side of the right arrow in the reaction are known as reactant and the species present on the right side of the right arrow in the reaction are known as product.
For example :
This reaction is a balanced chemical reaction because in this reaction the number of atoms of an individual elements are equal on both side of the reaction.
In this reaction, and are the reactants and is the product.
The reactantis the chemical reaction of 2 or more different elements.
The product is what is formed in a chemical reaction.
Example: H + O ----> H2O
H + O is the reactants, and H2O is the products.
What cell process occurs in the mitochondria?
"Cellular Respiration"occurs in the mitochondria
Hope this helps!
What element has the highest electronegativity?
Fluorine( F ), atomic number = 19 is the most electronegative element in the periodic table.
Answer: fluorine :)
Suppose you had 10 mol of NaCl and you dissolved it in exactly 3.00 kg of pure water (the solvent). What would be the molality of the solution in mol/kg?
Molality = number of moles of solute/mass of solvent in kg = 10/3 = 3.34 mol/kg.
How did mendeleev organize the periodic table?
Mendeleev organized the periodic table on the basis of "Atomic Masses of the elements"
Hope this helps!