THE ANSWER TO THE QUESTION IS A
Answer:
E. Mass number
H. Ion
F. Isotopes
I hope you have a great day. I'm sorry that I didn't know C or I.
Answer:
wavelength = wave velocity/frequency.
Explanation:
c
is a constant. It is usually given as
3.00
×
10
8
m/s or
3.00
×
10
10
cm/s rounded to three significant figures.
Wavelength is measured in meters, centimeters, nanometers, etc...).
Frequency has a unit of
1/s
which means
1
cycle per second. It is also given the unit Hertz (Hz) in honor of German physicist Heinrich Hertz who proved the existence of electromagnetic waves.
1
Hz
=
1/s
.
Question is incomplete.
The correct question should be
Many chemical compounds have both common and systematic names. common names are historical and tend not to identify the elements that make up the compound. however, the systematic name allows for correct identification of the cations and anions that together make up the ionic compound.
A ) What is the chemical forula for potassium permanganate?
B) What is the chemical formula of Copper (II) sulfate ?
C) Sodium carbonate is used in the manufacture of paper. What is the chemical formula for this compound?
Answer: -
A) KMnO₄
B) CuSO₄
C) Na₂CO₃
Double replacement. The metal ions have exchanged partners.
“Single replacement” is <em>incorrect</em>. In single displacement, <em>one element displaces another element</em> in a compound.
“Decomposition” is <em>incorrect</em>. In decomposition, a <em>single substance</em> changes into two or more substances.
“Combustion” is <em>incorrect </em>because it usually involves a <em>reaction with oxygen</em>
.