Answer:
Among the given options which one best suits the definition of an element?
Explanation:
Element:
Element is the pure form of matter which cannot be broken down into new simpler substances either by physical or chemical means.
It is made up of the same type of atoms.
For example:
Copper, silver, gold, oxygen, etc.
Among the given options:
the third option that is elements are made of atoms is the correct option.
Remaining statements:
Elements are made up of complex chains of carbon and oxygen is wrong,
Elements can be broken down into other simpler substances is wrong.
Because we don't get any simpler substances from elements.
For example, if we break a gold rod many times also only its size varies and no new substance is obtained from it.
All elements have the same chemical properties is a wrong statement.
Because each element is unique and it has its own properties.
Answer:
grapefruit juice is an acid
Explanation:
A piece of neutral litmus paper turned red in some grapefruit juice. What does this show about the grapefruit juice
with litmus paper remember:
E R
S E
ACID
BLUE
acids turn litmus red, bases turn it blue
all citrus fruits :llemons, lime, grapefruit, oranges, etc are called
CITRUS FRUITS because they contain citric acid
Hey there!:
Given [ OH⁻ ] = 9.00 x 10⁻⁴
We know that : [H⁺ ] [OH⁻ ] = 1 x 10⁻¹⁴
Thus [H⁺ ] = ( 1 x 10⁻¹⁴ ) / ( 9.00 x 10⁻⁴ )
[ H⁺ ] = 1 x 10⁻¹¹ M
therefore:
pH = - log [ H⁺ ]
pH = - log [ 1 x 10⁻¹¹ ]
pH = 10.95
Therfore pH = 10.95
I hope this will help !
Ferromagnesian silicate minerals (i looked it up)
