Explanation:
Number of protons means atomic number of an atom. Element whose atomic number is 27 is cobalt.
When an atom is neutral then the number of protons equal the number of electrons.
Cobalt is a transition element or it is also known as d-block element. The electronic configuration of cobalt is as follows.
Answer:
A. acidity
Explanation:
Acid-base indicators are usually weak acids or bases and they are chemical detectors for hydrogen or hydronium cations.
Answer:
a form of energy that harnesses the power of water in motion—such as water flowing over a waterfall—to generate electricity.
Explanation
B
As the concentration of B was doubled, the reaction rate doubled.
a method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.
