Hand washing soap was a special liquid soap for washing hands to make it clean, fragrant, soft, and safe for the skin. During the Covid-19 pandemic, hand soap was needed to maintain cleanliness. This study aims to make hand soap with a variation in the addition of the amount of texapon and to compare it with the SNI 2588-2017 parameters. The variation in the number of texapon used was 5; 15…
The mixture of used cooking oil with pertalite has not been widely used by people to fuel rose stoves. In general, kerosene is used as fuel for rose stoves, but kerosene is very expensive. This study aims to find alternative fuels to replace kerosene for rose stoves. To get the best performance of Mawar's stove, a variation of the ratio of used cooking oil-pertalite (9: 1 and 8: 2) mixture …
The influence of Spent Bleaching Earth (SBE) and carbonate lime variations on the quality of bricks is one alternative in order to find alternative variations to the quality of bricks. The characteristic of SBE and carbonate lime almost resemble sand, but have finer particles, therefore both of these materials were used in this research as a substitute for some sand in brick making. The pur…
The mixture of used cooking oil with pertalite has not been widely used by people to fuel rose stoves. In general, kerosene is used as fuel for rose stoves, but kerosene is very expensive. This study aims to find alternative fuels to replace kerosene for rose stoves. To get the best performance of Mawar's stove, a variation of the ratio of used cooking oil-pertalite (9: 1 and 8: 2) mixture …
E-waste as printer casing is plastic that resistant to chemicals, stable to heat, strength and gristly. One of the efforts to reduce e-waste is to utilize it as a brick for building materials. The purpose of this research is to use the casing of printer waste as substitute for some sand on the Production of bricks, to determine the influence of variation in the refined printer chasing on dr…
Soap is a cleanser made by the chemical reaction between potassium or sodium with fatty acids from vegetable oils or animal fats, while Hand Wash that was a specifically liquid soap for washing hands to be clean, fragrant, soft, and safe for the skin. However, during the 19th pandemic, hand washing soap was needed because it was needed to break the chain of the virus from spreading. The pur…
Soap is a cleanser made by the chemical reaction between potassium or sodium with fatty acids from vegetable oils or animal fats, while Hand Wash that was a specifically liquid soap for washing hands to be clean, fragrant, soft, and safe for the skin. However, during the 19th pandemic, hand washing soap was needed because it was needed to break the chain of the virus from spreading. The pur…
Assessment is an essential component in the administration of education, since an attempt to improve the quality of education can be conducted through improving learning and the quality of the assessment system. The assessment process covers collecting evidence to find out the learning achievement (competency achievement) of the students. The competency achievement depends on the implementation…
Development research aims to: 1) develop chemoentrepreneurship- based chemistry student worksheets. 2) Knowing the validity of chemoentrepreneurship-based student worksheets. 3) Determine the interests of chemistry teacher candidates by using chemoentrepreneurship-based student worksheets. This type of research is research and development with the design chosen is the Plomp development design, …
The assessment instrument is an integral part of an assessment process in learning. Assessment instruments include tests and a grading system. The assessment instrument is designed to determine the level of understanding of students after learning a competency. Achieving the real goal of learning chemistry requires the use of assessment instruments that not only include rote memorization a…
Chemistry learning objectives can be achieved if students are actively involved in the learning process by applying an inquiry model that can help students find their own concepts and can practice science process skills. The application of the Vee diagram assisted inquiry model can improve conceptual understanding which in turn will improve the science process skills of students, especially in …
The research that has been done is the development of e-LKPD based on Guided Inquiry to improve the communicative and collaborative character of students. This research is motivated by the lack of teaching materials in the form of e-LKPD based on guided inquiry. This study aims to improve the communicative and collaborative character of students through the development of an Electronic Stu…
The development of e-module using the guided inquiry-based kvisoft flipbook maker on this reaction rate material needs to be done because problems were found in schools, namely at SMAN 1 Seberida, SMAN 1 Rengat Barat, and SMAN 1 Batang Cenaku, Indragiri Hulu Regency, namely the critical thinking ability of students is still low, The availability of innovative / electronic-based teaching ma…
ABSTRACT Indonesia is a country with a growing human population, causing the need of energy also increases. Bioethanol has been widely used in transportation as a fuel that is increasingly reduced. Palm kernel expeller has a high enough potential to be developed into an alternative energy source, namely bioethanol because of its lignocellulosic content. The purpose of this study was to det…
ABSTRACT The membrane is a selective and semipermeable layer that is between two phases, namely the feed phase and the permeate phase. Membrane synthesis using chitosan-silica with phase inversion method. The purpose of this research were to make membranes of chitosan-silica for hotel waste water treatment with 2,5:2,5, 2,5:3, 2,5:3,5, 3:2,5, 3:3, 3:3,5, 3,5:2,5, 3,5:3, 3,5:3,5, 4:2,5, 4:3…
ABSTRACT Bioethanol is a renewable alternative energy source that can be used as an alternative fuel. Bioethanol is a fermented product that can be made from substrates that contain carbohydrates (sugar, starch, cellulose). Sago pulp is a very abundant biomass that has not been utilized properly, so far sago pulp has only been used as fertilizer and animal feed. Biomass containing cellulos…
ABSTRACT These days, people's interest in consuming fruit juice in containers such as pineapple is very high because it is more easier to consume and has a longer shelf life. Pineapple juice that is not processed properly can be contaminated with various decomposing microorganisms, one of which is the fungus Eupenicillium javanicum. E. javanicum can form spores and cause decay in pineapple wh…
ABSTRACT Bioethanol is a bioenergy that can be used as an alternative fuel. One of the raw materials that can be utilized is sago solid waste. Sago pulp biomass, which is a lignocellulose material, contains considerable potential as a basis for bioethanol based on the availability of certain components (starch and cellulose) it contains. Cellulose content found in sago solid waste can be c…
ABSTRACT Hydroxyapatite is a crystalline molecule composed of phosphorus and calcium with the molecular formula Ca10 (PO4) 6 (OH) 2. Synthetic hydroxyapatite is known as one of the important implant materials because it has bioactive, biocompatible and osteoconductive properties that chemically resemble the mineral components of bones and teeth, so that it can be used as a substitute for …
ABSTRACT Rubber asphalt modifications are used to produce asphalt roads that are more resistant to high traffic loads and extreme climate change. Natural rubber used can be latex, solid rubber or used rubber. This research aims to determine the characteristics of rubber asphalt with the addition of the antioxidant trimethyl quinoline. In this study the asphalt used is a type of asphalt pen…