The correct option is B.
Phenophtalein is an indicator that is usually used in acid base titration experiments. Indicators are substances that undergo distinct, observable changes when the pH of their solutions change. Indicators exhibit changing of colors depending on the pH of the solution in which they are found. They are usually weak bases and acid which are capable of partial dissociation and formation of ions when dissolved in water. There are different types of indicator and phenophtalein is one of them. Phenophtalein is colorless in acidic solution and pink in basic solutions.
The person has just died or has been dead for 36-48 hours 2. A body was found exhibiting rigor throughout the entire body. ... The body has been dead for about 6-8 hours because rigor mortis takes 12 hours to compute so it must be before 12 hours but over 6.
The definition of the age or date of organic matter from the relative proportions of the carbon isotopes carbon 12 and carbon 14 that it contains.
Answer:
four holes
Explanation:
A ball and stick model is a representation of a molecule that can show the number of bonds and sometimes, the stereochemistry of the molecule under study.
The number of holes on present in the ball and stick model for any atom corresponds to the number of bonds that particular atom can form without violating the octet rule.
Carbon is usually tetravalent, it forms four bonds to other atoms. Hence we expect carbon to have four holes.
Answer:
C
Explanation:
because its half life is shorter than the subsequent ones