Answer:
I don't know if this will help but. The Great Sphinx has suffered from erosion and vandalism. Hatshepsut's stepson was too young to rule at the time of her husband's death, so she just took the job.
Classical conditioning
Explanation:
Its a type of associative learning based on the association between a neutral stimulus with another that is significant for a person or an animal in order to generate a similar response.
I hope this is what you are looking for
Answer:
The solutions are classified according to their ability to scatter light rays.
We can't just use this property because some true solutions also contain undissolved solute.
Explanation:
Tyndall effect refers to the ability of a solution to scatter light rays. True solutions do not scatter light rays while false solutions scatter light rays.
Colloid particles are not large enough to be seen with naked eyes unlike suspensions. We should not confuse a colloid with a suspension because in a suspension, the dispersed solutes are seen with naked eye.
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.
The empirical formula :
MgCl₂
Li₂O
<h3>Further explanation</h3>
Given
a 3.60 g of magnesium and 10.65 g of chlorine
b 9.1 g of lithium and 10.4 g of oxygen
Required
The empirical formula
Solution
The empirical formula is the smallest comparison of atoms of compound forming elements.
A molecular formula is a formula that shows the number of atomic elements that make up a compound.
(empirical formula) n = molecular formula
a. mol ratio of Mg (Ar=24 g/mol) and Cl(Ar=35.5 g/mol)
Mg : Cl
=3.6/24 : 10.65/35.5
=0.15 : 0.3 = <em>divide by 0.15</em>
=1 : 2
The empirical formula : MgCl₂
b. a. mol ratio of Li (Ar=7 g/mol) and O(Ar=16 g/mol)
Li : O
=9.1/7 : 10.4/16
=1.3 : 0.65 = <em>divide by 0.65</em>
= 2 : 1<em> </em>
The empirical formula : Li₂O