Interpretation: Three reasons for studying chemistry are to be determined.
Concept Introduction : Chemistry is the branch of science that examines the characteristics, make-up, and structure of substances, as well as the changes they go through, and the energy released or absorbed.
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Answer to Problem 8LC
Explaining the natural world
Preparing for a career
Being an informed citizen
Explanation of Solution
Reasons for studying chemistry are:
Explaining the natural world
Preparing for a career
Being an informed citizen
Explaining the natural world:
All objects that can be classified as materials are collectively referred to as matter. Anything with mass and space is matter. Everything around us is formed of matter, including trees, buildings, food, etc. Chemistry is the study of the chemical composition of matter and the transformations that it undergoes.
Consider an example,
If an apple is cut, it turns broom after some time. Chemistry can find the reason behind it. This is because the polyphenol oxidase (PPO) enzymes in apples in the presence of oxygen quickly oxidize the phenolic compounds to o-quinones, which are colorless to secondary products that are brown.
Thus, chemistry explains the various activities occurring in the natural world.
Preparing for a career
A solid foundation in chemistry offers an excellent starting point for advanced studies in many related subjects. Even in times of heavy unemployment, having a degree in chemistry gives an advantage because chemists are among the most highly sought-after scientists.
Being an informed citizen
Governments at the federal and state levels, business, and private foundations all contribute to scientific research funding. The path of research can be affected by financing options. The value of the objective must be weighed against the expense of those who distribute the funds.
Chapter 1 Solutions
EP CHEMISTRY-ETEXT ACCESS
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- Identify the molecule as having a(n) E, Z, cis, or trans configuration. CH3 H₁₂C ○ E ○ z ○ cis transarrow_forwardIdentify the molecule as having a(n) E, Z, cis, or trans configuration. H₂C- CH3 О Е ○ cis ○ transarrow_forwardThe decomposition of dinitrogen pentoxide according to the equation: 50°C 2 N2O5(g) 4 NO2(g) + O2(g) follows first-order kinetics with a rate constant of 0.0065 s-1. If the initial concentration of N2O5 is 0.275 M, determine: the final concentration of N2O5 after 180 seconds. ...arrow_forward
- Don't used hand raitingarrow_forwardCS2(g) →CS(g) + S(g) The rate law is Rate = k[CS2] where k = 1.6 × 10−6 s−¹. S What is the concentration of CS2 after 5 hours if the initial concentration is 0.25 M?arrow_forwardCS2(g) → CS(g) + S(g) The rate law is Rate = k [CS2] where k = 1.6 × 10-6 s−1. S Calculate the half-life.arrow_forward
- The following is a first order reaction where the rate constant, k, is 6.29 x 10-3 min-*** What is the half-life? C2H4 C2H2 + H2arrow_forwardControl Chart Drawing Assignment The table below provides the number of alignment errors observed during the final inspection of a certain model of airplane. Calculate the central, upper, and lower control limits for the c-chart and draw the chart precisely on the graph sheet provided (based on 3-sigma limits). Your chart should include a line for each of the control limits (UCL, CL, and LCL) and the points for each observation. Number the x-axis 1 through 25 and evenly space the numbering for the y-axis. Connect the points by drawing a line as well. Label each line drawn. Airplane Number Number of alignment errors 201 7 202 6 203 6 204 7 205 4 206 7 207 8 208 12 209 9 210 9 211 8 212 5 213 5 214 9 215 8 216 15 217 6 218 4 219 13 220 7 221 8 222 15 223 6 224 6 225 10arrow_forwardCollagen is used to date artifacts. It has a rate constant = 1.20 x 10-4 /years. What is the half life of collagen?arrow_forward
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