Chemists working for a pharmaceutical company carry out an experiment in which they measure the amount of time it takes for different amounts of an antacid to neutralize 1 mL of hydrochloric acid. The results of their experiment are shown in the graph to the right. a. What are the independent and dependent variables in this experiment?

b. What does the graph show you about the relationship between the amount of antacid and the length of time to neutralize the acid?

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your answer should be c) enjoy!

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.

ans.

dna fingerprinting is defined as a process that determines the dna characteristics of an individual. these dna characteristics are unique among individuals as their fingerprints, so it is known as dna fingerprinting.

steps of dna fingerprinting includes extraction of dna from sample, amplification of dna, restriction digestion of amplified dna, and then analysis of dna by gel electrophoresis, respectively.

thus, the next step performed by the scientist is 'to cut the amplified dna (obtained by polymerase chain reaction) by restriction enzymes that cleave the dna into fragments and their analysis.'