Science

Refine Search

What is the conjugate base of H2SO4?

A conjugate base is not necessarily a basic molecule. Conjugate bases are defined as molecules that are formed when an acid loses a hydrogen ion. Although these molecules may still be acidic in most situations, they can still regain that lost hydrogen ion to form the original acid. Therefore, it makes the most sense to talk about conjugate acids and bases in pairs.\nThe concept of conjugate acids and bases comes from the Bronsted-Lowry definition of acids. According to this definition, an acid is any molecule that can "donate" or give up a hydrogen ion (a proton). Bases are molecules that can ..

Continue Reading

Where is the torso on the human body?

Many of the body's major organs are found in the torso. The chest contains the heart and lungs, while the abdomen houses the digestive system, including the stomach, small intestines, large intestines, liver and pancreas. The torso also encases the spleen, kidneys, bladder and reproductive system. Numerous major blood vessels, such as the aorta and the inferior vena cava, are in this major section of the body, as well as the spine and a number of important muscles and bones.

Continue Reading

What is a normal white blood cell count?

White blood cells are immune cells that are found in the bloodstream. In total, there are five main types of white blood cells: basophils, eosinophils, lymphocytes, monocytes and neutrophils. All these cells help the body fight infection. A white blood count that is too high or too low may indicate that there is a medical issue. Too few white blood cells is known as leukopenia and can lead to many infections. Too many white blood cells may be indicative of cancer.

Continue Reading

What is 74 centimeters in inches?

The formula to convert inches to centimeters divides the number of inches by 0.39. The inch is a unit of length in the imperial unit of measurement that is used primarily in the United States and Canada. The centimeter is equal to 1/100 of a meter, which is the primary unit of length in the metric system of measurement. The metric system of measurement is the most commonly used system in the world.

Continue Reading

Are all plants autotrophs?

Any plant with green leaves is classified as an autotroph. The definition covers trees, mosses and flowering plants, to name a few. Most plants use photosynthesis to produce food in the form of sugar.\n\nPlants are not the only organisms classified as autotrophs, although they are one of the most well-known examples. Phytoplankton, algae and some types of bacteria are also able to make their own food. Some of these organisms use chemosynthesis instead of photosynthesis.\n\nChemosynthesis uses the energy generated by chemical reactions to produce food. Some of the bacteria that live in the ocea..

Continue Reading

What are the 10 most active volcanoes in the world?

Because "most active" is a subjective criteria, the list of the most active volcanoes can vary based on the measurements used and the time period considered. Rankings based on the length of time a volcano's eruptions last provide a different list for the 10 most active volcanoes. Based on data from 1900 to the present, the Smithsonian Institution's Paul Kimberly ranks the top 5 most active volcanoes as Mount Yasur in Vanautu, Mount Etna in Italy, Stromboli in Italy, Santa Mar?a in Guatemala and Sangay in Ecuador. Of those five volcanoes, only Sangay has been continuously erupting for..

Continue Reading

How do you dispose of muriatic acid?

In most locations, after muriatic acid has been neutralized, it can be disposed of into the sewer. Before disposing of neutralized muriatic acid, it's recommended to check the pH with a pH strip to make sure the pH is near seven.\nDisposal of muriatic acid is strongly recommended if storage is impractical. Although laboratory-grade sodium carbonate is preferred for neutralization, it's possible to use food-grade baking soda.\nMuriatic acid is a hazardous substance that must be handled with care. Recommendations for its handling include wearing personal protective equipment such as ni..

Continue Reading

How does a rectifier convert AC to DC voltage?

Rectification systems are typically used in household situations as well as for power transmission. The most common rectification systems are the half-wave rectifier and the full-wave rectifier.The half-wave rectifier uses a single diode to simply remove half of the sinusoidal wave. It produces a directional output with a pulsating nature. Positive AC voltage on the cathode side of the diode is allowed to pass through. When the AC reverses, the negative input is not allowed to pass through.The full-wave rectifier is used in situations where both the positive and negative input is required. A ..

Continue Reading

What are the branches of biology?

Biology is a natural science concerned with the study of life and organisms. Modern biology is a vast field that encompasses many sub-disciplines. Basic biological concepts, such as recognizing the cell as the basic unit of life and evolution as the process through which species are created and altered, serve to unify the many different branches of modern biology. Many sub-branches of biology can be defined based on the scale, methods and types of organisms studied.\nWhile modern biology is a relatively new science, the study of living organisms has been ongoing since ancient times. Natural ph..

Continue Reading

What is the importance of chemistry to daily life?

Chemistry is the physical science that studies the composition of substances and the elemental forms of matter. Because everything is ultimately made of chemicals, this makes it an incredibly important branch of science. Even things that are alive, such as plants and animals, are made up of elements that interact with one another. This means that chemistry can help people understand the interplay between living things and the world around them. Chemistry has applications in medical drugs, product development and a variety of different industries.\nUnderstanding chemistry can also help people s..

Continue Reading
Showing 161 to 170 of 10000 (1000 Pages)