Concentrated sulfuric acid is dense 1840 kg/m3 and viscous while ethanoic or acetic acid is much lighter and more mobile and has a powerful choking smell. Dilute sulfuric acid has no smell while dilute acetic acid smells like vinegar. What … Continue reading →

Persons who have drawn concentrated sulfuric acid into a pipet with oral suction, and obtained the acid on the tongue through poor technique, report that it tastes sweet before the onset of corrosive action. How does sulfuric acid taste like? … Continue reading →

Reserve Capacity (RC) RC is a general indicator of how long a new, fully charged battery can continue to operate essential accessories if the vehicle’s alternator fails. What does RC 160 mean on a battery? Reserve CapacityRC: Reserve Capacity is … Continue reading →

Loose terminal connections won’t drain the battery. They can prevent the battery from being charged, properly which will look like the battery is being drained. Loose connections will also prevent electrical systems from operating properly. What happens if negative battery … Continue reading →

Batteries become unusable long before the are electrically inactive. Licking a 9-V battery won’t tell you if you are licking it while it is still usable or after it is no longer useful but still electrically active. Only if it … Continue reading →

Purchase a lamp that uses candles or batteries instead of electricity as its energy source. Install appropriately sized candles or batteries in your lamp. You can also power a candle-based lamp on LED candles, which are fake candles that run … Continue reading →

Check the label on your light bulb to ensure it can operate on nine volts. It doesn’t matter if the voltage is slightly more, it just won’t glow as bright, but if the voltage is six or less, it’s likely … Continue reading →

Graphene can be used as an additive for physical properties and for improving the green characteristics of materials. This will likely mean that focusing on its sustainable aspects will help with its worldwide growth and market penetration in a more … Continue reading →

Generally, graphene was obtained by either refluxing the graphene oxide solution in a long time (about 24 h) [11] or heated the graphene oxide powder at high temperature (up to 1050 °C) under nitrogen atmosphere [12], [13]. How do you … Continue reading →

Graphene and graphene derivatives have been used to prepare various types of biosensors due to their excellent sensing performance (e.g., high specific surface area, extraordinary electronic properties, electron transport capabilities and ultrahigh flexibility). Why is graphene good for sensors? The … Continue reading →

Blood Collection Tubes Tube cap color Additive Common laboratory tests Lavender or pink Potassium EDTA Hematology and blood bank Gray Sodium fluoride, and sodium or potassium oxalate Glucose (especially when testing will be delayed), blood alcohol, lactic acid What blood … Continue reading →

Two questions we hear often are: “What happens if you break a lithium-ion battery?” and “What are the dangers of lithium-ion batteries?” Broken or cracked cases can allow moisture and oxygen to enter the battery and oxidize the lithium components, … Continue reading →

lithium iron phosphate. Actually, the safest technology is the carbon-coated lithium iron phosphate. Capacity might not be as good as for their nickel or cobalt based counterparts (about 10% less), but they are safe as they won’t explode or burn … Continue reading →

Li-ion batteries release a various number of toxic substances14,15,16 as well as e.g. CO (an asphyxiant gas) and CO2 (induces anoxia) during heating and fire. Are Li-ion batteries toxic? Lithium batteries contain potentially toxic materials including metals, such as copper, … Continue reading →

Lymph travels in a system similar to the circulatory system, but the lymph vessels do not have a pump. Extracellular means outside of the cells. Lymph is extracellular because it does not travel inside the cells, but instead travels free … Continue reading →