empressteemah(25)•in #steemstem•2197 days agoANALYSING, IDENTIFYING AND SEPARATING SUBSTANCES IVHello, estemmed readers of the HiveSTEM community. It has been a while. It’s so great to be back, not on Steem but Hive. Nice logo and colour mix.In my las...1661$2.89empressteemah(25)•in steemstem•2197 days agoANALYSING, IDENTIFYING AND SEPARATING SUBSTANCES IVHello, estemmed readers of the HiveSTEM community. It has been a while. It’s so great to be back, not on Steem but Hive. Nice logo and colour mix.In my las...1661$2.89
empressteemah(25)•in #steemstem•2208 days agoANALYSING, IDENTIFYING AND SEPARATING SUBSTANCES IIIToday's post will be centred majorly on spectroscopy and chromatography. So, let's get to start with the discussion on nuclear magnetic resonance spectroscopy.N...4901$2.51empressteemah(25)•in steemstem•2208 days agoANALYSING, IDENTIFYING AND SEPARATING SUBSTANCES IIIToday's post will be centred majorly on spectroscopy and chromatography. So, let's get to start with the discussion on nuclear magnetic resonance spectroscopy.N...4901$2.51
empressteemah(25)•in #steemstem•2213 days agoANALYSING, IDENTIFYING AND SEPARATING SUBSTANCES IIHello, dear readers. I will be starting today's post on the explanation of a special type of spectrometer called The Time-of-flight mass spectrometer.TIME-OF-FL...5442$6.64empressteemah(25)•in steemstem•2213 days agoANALYSING, IDENTIFYING AND SEPARATING SUBSTANCES IIHello, dear readers. I will be starting today's post on the explanation of a special type of spectrometer called The Time-of-flight mass spectrometer.TIME-OF-FL...5442$6.64
empressteemah(25)•in #steemstem•2223 days agoANALYSING, IDENTIFYING AND SEPARATING SUBSTANCES.Medicines from plants: The first recorded use of plants for medicinal purposes was found on Egyptian papyrus dated about 1500 BC. All over the world, from triba...3244$8.52empressteemah(25)•in steemstem•2223 days agoANALYSING, IDENTIFYING AND SEPARATING SUBSTANCES.Medicines from plants: The first recorded use of plants for medicinal purposes was found on Egyptian papyrus dated about 1500 BC. All over the world, from triba...3244$8.52
empressteemah(25)•in #steemstem•2228 days agoALKANES, THE CAR ENGINE AND ATMOSPHERIC POLLUTION #3Carbon dioxide is not the most potent greenhouse gas. If its concentration in the Earth’s atmosphere were to double, the effect would probably be an increase in...4515$4.83empressteemah(25)•in steemstem•2228 days agoALKANES, THE CAR ENGINE AND ATMOSPHERIC POLLUTION #3Carbon dioxide is not the most potent greenhouse gas. If its concentration in the Earth’s atmosphere were to double, the effect would probably be an increase in...4515$4.83
empressteemah(25)•in #steemstem•2234 days agoALKANES, THE CAR ENGINE AND ATMOSPHERIC POLLUTION #2Hello, great readers. Greetings to the entire steemstem and stem communities. Thanks for the constant support and motivation. Today, I will continue from where ...5252$4.13empressteemah(25)•in steemstem•2234 days agoALKANES, THE CAR ENGINE AND ATMOSPHERIC POLLUTION #2Hello, great readers. Greetings to the entire steemstem and stem communities. Thanks for the constant support and motivation. Today, I will continue from where ...5252$4.13
empressteemah(25)•in #steemstem•2238 days agoALKANES, THE CAR ENGINE AND ATMOSPHERIC POLLUTIONWinter smogs and summer smogs: People have become too reliant on the car. In the UK, for example, nearly a quarter of all car trips are less than 2 miles i...5955$5.45empressteemah(25)•in steemstem•2238 days agoALKANES, THE CAR ENGINE AND ATMOSPHERIC POLLUTIONWinter smogs and summer smogs: People have become too reliant on the car. In the UK, for example, nearly a quarter of all car trips are less than 2 miles i...5955$5.45
empressteemah(25)•in #steemstem•2246 days agoDIFFERENCES BETWEEN ALDEHYDES AND KETONESSo far, I have treated carbonyl compounds together and looked at reactions of the C=O functional group in both aldehydes and ketones. They do, however, differ i...4112$3.04empressteemah(25)•in steemstem•2246 days agoDIFFERENCES BETWEEN ALDEHYDES AND KETONESSo far, I have treated carbonyl compounds together and looked at reactions of the C=O functional group in both aldehydes and ketones. They do, however, differ i...4112$3.04
empressteemah(25)•in #steemstem•2250 days agoALDEHYDES AND KETONES: Sex Hormones and The PillThe most publicized hormones must be progesterone and testosterone. The reason for their fame is sex. Progesterone is the female sex hormone, which prepares the...5071$3.56empressteemah(25)•in steemstem•2250 days agoALDEHYDES AND KETONES: Sex Hormones and The PillThe most publicized hormones must be progesterone and testosterone. The reason for their fame is sex. Progesterone is the female sex hormone, which prepares the...5071$3.56
empressteemah(25)•in #steemstem•2253 days agoTHE CHEMICAL REACTIONS OF HALOGENOALKANES, CFCS; AND THE NATURE OF OZONE.Monohalogenoalkanes are best prepared by replacing the hydroxyl group in an alcohol with a halogen atom. A variety of reagents can be used for this conversion a...6603$5.71empressteemah(25)•in steemstem•2253 days agoTHE CHEMICAL REACTIONS OF HALOGENOALKANES, CFCS; AND THE NATURE OF OZONE.Monohalogenoalkanes are best prepared by replacing the hydroxyl group in an alcohol with a halogen atom. A variety of reagents can be used for this conversion a...6603$5.71
empressteemah(25)•in #steemstem•2264 days agoHALOGENOALKANES: Free Radical Reaction Mechanisms, Fluorination of Alkanes and the Uses of Organofluorines.The mechanism of a reaction details the smaller steps in the process that results in the formation of the end products from the starting material. In particular...4646$6.94empressteemah(25)•in steemstem•2264 days agoHALOGENOALKANES: Free Radical Reaction Mechanisms, Fluorination of Alkanes and the Uses of Organofluorines.The mechanism of a reaction details the smaller steps in the process that results in the formation of the end products from the starting material. In particular...4646$6.94
empressteemah(25)•in #steemstem•2270 days agoHALOGENOALKANES: Fluorohydrocarbons and ChlorofluorocarbonsAfter a serious accident, such as a plane crash in a remote area. Blood transfusions may have to be carried out under difficult conditions, but there may not be...5122$7.56empressteemah(25)•in steemstem•2270 days agoHALOGENOALKANES: Fluorohydrocarbons and ChlorofluorocarbonsAfter a serious accident, such as a plane crash in a remote area. Blood transfusions may have to be carried out under difficult conditions, but there may not be...5122$7.56
empressteemah(25)•in #steemstem•2274 days agoTHE CHEMISTRY OF COLOUR: Using A Colorimeter To Determine The Formula Of A Complex Ion.A colorimeter is a simple form of visible spectrometer. A fixed band of wavelengths of visible light is selected using a filter. This is then passed through the...5486$8.29empressteemah(25)•in steemstem•2274 days agoTHE CHEMISTRY OF COLOUR: Using A Colorimeter To Determine The Formula Of A Complex Ion.A colorimeter is a simple form of visible spectrometer. A fixed band of wavelengths of visible light is selected using a filter. This is then passed through the...5486$8.29
empressteemah(25)•in #steemstem•2279 days agoTHE CHEMISTRY OF COLOUR: Colour in Azo Compounds and How Dyes are Stuck onto Textiles.The first commercially successful azo dye was Chrysoidine. The azo group, – N=N –, acts as a ‘delocalisation bridge’ between the two benzene rings to form an ex...6122$6.65empressteemah(25)•in steemstem•2279 days agoTHE CHEMISTRY OF COLOUR: Colour in Azo Compounds and How Dyes are Stuck onto Textiles.The first commercially successful azo dye was Chrysoidine. The azo group, – N=N –, acts as a ‘delocalisation bridge’ between the two benzene rings to form an ex...6122$6.65
empressteemah(25)•in #steemstem•2286 days agoThe World of Oil and the Petrochemical Industry #2Hello guys. While scrolling through my past posts on steemit, I stumbled across one that really caught my attention. It's a post on The World of Oil and the Pet...5052$4.41empressteemah(25)•in steemstem•2286 days agoThe World of Oil and the Petrochemical Industry #2Hello guys. While scrolling through my past posts on steemit, I stumbled across one that really caught my attention. It's a post on The World of Oil and the Pet...5052$4.41
empressteemah(25)•in #steemstem•2292 days agoREACTIVE METAL: The Barium Meal, Common-Ion Effect and The Properties of Aluminium and Boron.Doctors often need to use X-rays to look inside the intestine and the stomach for cancers, ulcers and blockages.An image of an X-ray, Pixabay.However, using X-r...6106$7.88empressteemah(25)•in steemstem•2292 days agoREACTIVE METAL: The Barium Meal, Common-Ion Effect and The Properties of Aluminium and Boron.Doctors often need to use X-rays to look inside the intestine and the stomach for cancers, ulcers and blockages.An image of an X-ray, Pixabay.However, using X-r...6106$7.88
empressteemah(25)•in #steemstem•2300 days agoREACTIVE METALS: Solubility of Ionic SaltsMost ionic salts dissolve in polar solvents such as water. A solvent is a liquid that can dissolve other substances. The most common solvent is water. A solute ...4701$4.93empressteemah(25)•in steemstem•2300 days agoREACTIVE METALS: Solubility of Ionic SaltsMost ionic salts dissolve in polar solvents such as water. A solvent is a liquid that can dissolve other substances. The most common solvent is water. A solute ...4701$4.93
empressteemah(25)•in #steemstem•2308 days agoTHE REACTIVE METALS: Compounds of Alkali Metals and the Thermal Decomposition of Ionic Salts.The common feature of almost all compounds of the alkali metals is their high solubility in water. All the compounds of alkali metals are ionic and so they have...6702$14.98empressteemah(25)•in steemstem•2308 days agoTHE REACTIVE METALS: Compounds of Alkali Metals and the Thermal Decomposition of Ionic Salts.The common feature of almost all compounds of the alkali metals is their high solubility in water. All the compounds of alkali metals are ionic and so they have...6702$14.98
empressteemah(25)•in #steemstem•2313 days agoTHE CARBON DIOXIDE SINK AND THE REACTIVE METALSSome people think of carbon dioxide as just the greenhouse gas that causes global warming problems, although of course carbon dioxide is essential for life as w...6393$7.93empressteemah(25)•in steemstem•2313 days agoTHE CARBON DIOXIDE SINK AND THE REACTIVE METALSSome people think of carbon dioxide as just the greenhouse gas that causes global warming problems, although of course carbon dioxide is essential for life as w...6393$7.93
empressteemah(25)•in #steemstem•2320 days agoALKENES: Hydrogenation, Polymerization and the Manufacture of Poly(chloroethene) from Ethene.Alkenes can also undergo other sorts of addition reactions, such as catalytic hydrogenation. In this case, hydrogen is added to the C=C bond to make a saturated...5352$8.84empressteemah(25)•in steemstem•2320 days agoALKENES: Hydrogenation, Polymerization and the Manufacture of Poly(chloroethene) from Ethene.Alkenes can also undergo other sorts of addition reactions, such as catalytic hydrogenation. In this case, hydrogen is added to the C=C bond to make a saturated...5352$8.84
