Abstract: Research on the development of student activity worksheets (LKPD) integrated Science, Technology, Engineering and Mathematic (STEM) on electrochemical cell subject l for class XII student of senior high school is an innovation in the development of teaching materials in order to achieve the demands of 21st century learning. Student worksheets (LKPD) that integrated with STEM are …
Abstract: This research aims to develop Student Activities Workhsheet Based on Type Inquiry Pictorial Riddle on the Equalibrium Ion and PH Buffer Solution materials for grade XI SMA/MA. Student worksheet based are designed according to the Type Inquiry Pictorial Riddle model contents. The type of this research and development (R n D) with reference to the development process of 4-D. Te subj…
ABSTRACT Peat water is surface water that inundates an area, formed from a pile of organic material for a long time. Peat water can cause skin irritation and metabolic disorders. The purpose of this study was to determine the application of the electrocoagulation method can be used to neutralize pH, and reduce levels of TSS and Fe in peat water treatment and also to determine the effect of…
ABSTRACT Acrolein (C3H4O) is the simplest unsaturated aldehyde compound which can be used as a protective liquid fuel from microorganisms, essential amino acid methionine-making material and as a good separator and dispersing agent, widely used in the ceramic, paper and electroplating industries. The establishment of an acrolein factory made from crude glycerol with a capacity of 36,000,00…
ABSTRACT Ammonia is raw material for fertilizer industry, refrigerant and textile. The need for ammonia is increasing due the development of the agricultural industry which uses ammonia as the main raw material. Ammonia is produced by reacting hydrogen from natural gas and nitrogen from air. This plant is designed to produce 350.000 ton ammonia per year, operated continuously for 330 days/…
ABSTRACT Ethylene glycol is a hygroscopic liquid with low volatility. Ethylene glycol is colorless, odorless, has a low viscosity. Ethylene glycol is used as a polyester resin for fibers, a film-making agent, an antifreeze and coolant agent, a heat exchange agent, a water-based formula, and an unsaturated polyester. The purpose of establishing an ethylene glycol factory is expected to be a…
ABSTRACT Ethylene produced by cracked the chain of various componen in naphtha. nparaffin is preferable for thermal cracking reactor feed to produce ethylene. MaxEne process help to result n-paraffin rich stream as feed to thermal cracking reactor. The main equipment of MaxEne process is adsorbent chamber with nbutane as desorbent agent and two debutanizer, one of them is debutanizer extra…
ABSTRACT Phenol or hydroxybenzene is an organic compound which is widely used. Phenols are also used to produce various substances such as bisphenol-A, phenolic resins, caprolactam, alkyl phenols, and anilines. Acetone is used as a solvent for gums, waxes, resins, oils, dyes and cellulose because it has excellent dissolving properties. The wide use of these materials causes the domestic de…
ABSTRACT 1-Hexene is a raw material in plastic production and classified as a linear alpha olefin compound. 1-Hexane is produced from the ethylene trimerization process. The use of 1-hexene in the production of High-density polyethylene (HDPE) and linear low-density polyethylene (LLDPE) is one of the co-monomers. The use of 1-hexane in the manufacture of HDPE and LLDPE is about 2 - 4% and …
ABSTRACT Hexene is a raw material in plastic production and classified as a linear alpha olefin compound. This compound is used as a co-monomer in the production of polyethylene, manufacture of lubricants, manufacture of surfactants and alcohol. The use of 1-hexene in the production of High-density polyethylene (HDPE) and linear low-density polyethylene (LLDPE) is one of the co-monomers. …
ABSTRAK Ethylene is one of the most important petrochemical substances and it’s uses as raw material for various products. The last products made with ethylene include food packaging, toys, food containers, bottles, pipes, antifreeze, carpets, insulation, household appliances, etc. Chemicals made from ethylene to produce end products such as polyethylene, ethylene dichloride, ethylene ox…
ABSTRAK Linear alkyl benzene (C6H5CnH2n+1) is one of the organic compound used as raw material in the detergent industry because it has a high degradation rate and it is biodegradable. The increasing use of detergents, the linier alkyl benzene industry will also growing. This plant is designed to produce 80,000 tons per year of linear alkyl benzen (LAB). One of the main equipment in this p…
ABSTRACT Eucalyptus oil is one of the essential oils obtained from the extraction of eucalyptus leaves. The purpose of this study is to evaluate the effect of variations in sample and treatment Extraction time on the yield of eucalyptus essential oil and determine the characteristics of eucalyptus essential oil produced by themethod hydro distillation. Variations of sample treatment carrie…
Abstract Students have used student worksheets in school, but they still look passive and cannot find the concept of independent learning. The 2013 curriculum guides students to be more active and creative. This study aims to develop chemistry teaching materials such as Simas Eric-based student worksheets on colloids, knowing the validity of student worksheets based on the feasibility of c…
Abstract. This study aims to develop Schoology media as a support for Blended Learning on the subject of Stoichiometry. This research used a Research and Development (R&D) design with the Plomp model. The Plomp models have four steps faces (investigation, Design, construction and validation). The data was collected used an instruments in the form of validation sheets given to four validato…
Abstract: The purpose of the research is to see the learning exhauseiveness of students in stoikiometry subjects in class X MIA MAN 1 Pekanbaru. The type of research used in research is descriptive research with survey methods. Data collection uses test and interview techniques, while data collection tools use test questions. The sample from this study was a class X MIA learner who was samp…
Abstract – This research aims to develop Student Activities Worksheet Based on EKPA on the Reaction Rates material for grade XI SMA/MA. Student Worksheet Based are designed according to the EKPA model contens. The type of this research is research and development (R and D) with reference to the development process of 4-D. The subject pf this research is student activities worksheets base…
Research that has been done is the Effectiveness of Collaborative Learning Through Group Investigation (GI) and Think Pair Share (TPS) Techniques on Critical Thinking Ability and Self Efficacy of High School / MA Students on Chemical Equilibrium Material. This research is motivated by the value of the learning outcomes of students 'critical thinking skills in the chemical balance material …
The research that has been done is the Development of a PBL (Problem Based Learning) Module to Improve Students' Critical Thinking Ability on Acid and Base Subjects in class XI MA Darul Hikmah Pekanbaru. This research was motivated by the condition of the teaching materials in the field which were not based on PBL of students in improving their critical thinking skills. The module is a teaching…
ABSTRACT The development of plantation area in Indonesia always have increasing with significant. Along with the increasing in the area of oil palm plantations, palm oil mill production has also increased. Palm oil mill produces liquid waste with high content of organic compounds. If it is discharged into waters it has the potential to reduce water quality and pollute the environment. Wast…