What is the electron configuration of fluorine?
Fluorine atoms have 9 electrons and the shell structure is 2.7. The ground state electron configuration neutral fluorine is [He].... View Article
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What is the mass number of zinc?
Answer: Zinc has 30 protons and 35 neutrons, so its overall mass number of zinc is 65 atomic mass units.... View Article
Why can nerve impulses travel only in one direction?
Nerve impulse travels in one direction because nerve cells (neurons) connect to each other by synapse. The synapse (neurotransmitter vesicle)... View Article
What is the ionic bond formation of magnesium chloride?
The chemical bond formed by the transfer of electrons from one atom to another is known as an ionic bond.... View Article
What is common between the three states of matter?
Matter can exist in one of three main states: solid, liquid, or gas. In extreme environments, other states may be... View Article
What is the unit of the nervous system?
The nervous system is very complex, nervous tissue consists of just two basic types of nerve cells: neurons and glial... View Article
What is an alkoxide? Give an example
An alkoxide is an organic functional group formed when a hydrogen atom is removed from a hydroxyl group of alcohol... View Article
What are some examples of simple harmonic motion?
Simple harmonic motion is the motion in which the object moves to and fro along a line. In the simple... View Article
How do you determine the electron configuration of “W”?
we need to find the closest noble gas on the periodic table to tungsten, which is: Xenon (Xe) So, the... View Article
How do I calculate the mass of zinc and iodine that are consumed to produce zinc iodide?
The balanced chemical equation for this synthesis reaction between zinc and iodine is: Zn + I2→ ZnI2 To determine the... View Article
The ratio of hydrogen and oxygen in water is 1:8. Find the ratio of the number of atoms in one molecule of water? (mole concept, 9std science)
(i) 11.1⋅g/1.00794⋅g⋅mol−1=11.02⋅mol with respect to hydrogen. (ii) 88.9⋅g/16.00⋅g⋅mol−1=5.56⋅mol with respect to oxygen. We divide throughout by the lowest molar quantity... View Article
On heating ammonium dichromate, the gas evolved is?
The following reaction of ammonium dichromate when heated gives (NH4)2Cr2O7(s) → N2(g) + 4H2O(g) + Cr2O3(s) Ammonium dichromate decomposes on... View Article
What is the conjugate base of HSO4–?
The Bronsted-Lowry definition of acid base pairs is that an acid gives away a proton (H+) to a base, giving... View Article
What is the formula for calcium bisulfate?
Formula for calcium bisulphate is Ca(HSO4)2 which is composed of Ca2+ and HSO4− ions hence the 1:2 composition. Calcium bi... View Article
How does iron react with oxygen?
Iron is a solid substance with a silvery-grey colour and a bright metallic shine. Iron is a good conductor of... View Article
Balance this reaction using ion electron method in the shortest way possible: Fe^(2+) + MnO4^(-) + H^(+) -> Fe^(3+) + Mn^(2+) + H2O
In ion electron method one reaction is divided into two reaction (half reaction) and then they are balanced and then... View Article
Why is Boyle’s law graph curved?
According to Boyle’s law, For a given mass of a gas at a constant temperature, PV= constant. As pressure increases,... View Article
What is the atomic number of K?
Potassium is a chemical element with symbol K and atomic number 19. Potassium is essential to life. Potassium ions are... View Article
What is a group of similar cells that perform a particular function called?
A group of similar cells performing similar functions is known as tissues. It is a cellular organizational level between cells... View Article
Why silver nitrate is called lunar caustic?
Silver nitrate is a chemical known for its antiseptic properties. Silver nitrate is called lunar caustic because when it comes... View Article
