Umm i don’t get it, is it a joke?
1.) N3Cl
2.) Ionic because Cs is a metal and PO4 is a nonmetal
Answer: All of the statements (A-D) are false
Explanation: All of the given statements are wrong as Hydrogen bonds are weaker than the ionic and the covalent bonds.
Liquid water is more dense than the solid water.
When heat or temperature is provided to the system of the ice, not only covalent bonds are broken but also hydrogen bonds also get broke.
Energy must not be given off in order to break down the crytsal lattice of ice to a liquid. Infact in changing the phase of the water, energy is released.
Step 1: Find the Molar Mass of Adrenaline
Step 2: Find the Mass of Oxygen in 1 mol of Adrenaline
Step 3: Calculate Percentage Composition of Oxygen by Mass
Step 4: Calculate Mass of Oxygen in Sample
Hey let me know if you need any more help, if you do, i'd be more than happy to assist you, have a wonderful day! <3
<u> </u><u><em></em></u><u /><u><em></em></u><u> </u><u />
<u />
Answer:
physical change because the gaseous water is chemically the same as the liquid
Explanation:
Matter can be defined as anything that has mass and occupies space. Any physical object that is found on earth is typically composed of matter. Matter are known to be made up of atoms and as a result has the property of existing in states.
Generally, matter exists in three (3) distinct or classical phases and these are; solid, liquid and gas.
A physical change can be defined as a type of change that only affects the physical form of a chemical substance (matter) without having any effect on its chemical properties. Thus, a physical change would only affect the physical appearance and properties of a chemical substance (matter) but not its chemical properties.
This ultimately implies that, a physical change result in a change of matter from one form or phase (liquid, solid or gas) to another without a corresponding change in chemical composition.
Hence, the boiling of water is considered to be a physical change because the gaseous water is chemically the same as the liquid i.e there isn't any changes in chemical composition of water when boiling.
