It is a white solid. It is a weak reducing agent in air. It oxidizes to mercury(II) oxide and mercury(II) nitrate. It reacts slowly with water when it is dissolved in water. This makes a basic mercury(I) nitrate and some nitric acid. The basic mercury(I) nitrate is yellow. Mercury(I) nitrate can kill you if you eat or inhale it.
It is made by reacting mercury with a dilute solution of nitric acid. A concentrated solution of nitric acid makes mercury(II) nitrate.
Amalgam
An amalgam is a solution of a metal in mercury. Many metals can dissolve in mercury. Amalgams are used in tooth fillings. Platinum and iron cannot form amalgams. Gold can dissolve in mercury, which is used to separate gold from its ore. Aluminum forms an amalgam which can react with water because the thin oxide coating on the aluminum is dissolved.
Mercury(II) nitrate
Mercury(II) nitrate, also known as mercuric nitrate, is a chemical compound. Its chemical formula is Hg(NO). It contains mercury and nitrate ions. The mercury is in its +2 oxidation state.
Mercury(II) nitrate is a white crystalline solid. It is a strong oxidizing agent.
It is made by reacting mercury with concentrated nitric acid; dilute nitric acid would make mercury(I) nitrate.
It was used to make felt from fur. People would get poisoned when using it to make hats, making the term "mad hatter".
Mercury(II) iodide
Mercury(II) iodide, also known as mercuric iodide, is a chemical compound. Its chemical formula is HgI. It has mercury and iodide ions in it. The mercury is in its +2 oxidation state.
It is a red crystalline compound. It turns yellow when heated and turns red again when it is cooled. It is insoluble in water. It is highly toxic like all mercury compounds.
Mercury(II) iodide is made by reacting a mercury(II) salt such as mercury(II) chloride with a source of iodide ions. This makes a bright red precipitate.
It is found as the very rare mineral coccinite.
It was used as a medicine, but it poisoned people who took the medicine. It is also used to demonstrate how some things change color when heated and change back when cooled. It can be used to test for ammonia and as a semiconductor.
Mercury chloride
Mercury chloride can refer to either of the following chemical compounds:
Mercury nitrate
Mercury nitrate can refer to either of the following chemical compounds:
Mercury iodide
Mercury iodide can mean either of the following chemical compounds:
Mercury(I) iodide
Mercury(I) iodide, also known as mercurous iodide, is a chemical compound. Its chemical formula is HgI. It has mercury and iodide ions in it. The mercury is in its +1 oxidation state.
It is a yellow solid. When light is shined on it, it breaks down (by disproportionation) to mercury(II) iodide and iodine. It is toxic, as are all mercury compounds.
It is made by reacting mercury and iodine. It was once used as a medicine.
Stroopwafel
A stroopwafel () (English translation: syrup waffle or treacle waffle) is a waffle made from two thin layers of baked batter. It has a caramel-like syrup filling in the middle. They were first made in the town of Gouda in the Netherlands, in 1784. Bigger versions are sold in the streets as a snack.
Inline-four engine
The Inline-four engine or Straight-four is an internal combustion engine with all four cylinders. All four cylinders are mounted in a straight line along one crankshaft. It can be powered by different types of fuels, including gasoline, diesel and natural gas.
The single bank of cylinders may be in a vertical direction (straight up), or at an angle. When the cylinders are mounted at an angle, it is sometimes called a slant-four. When listed as an abbreviation, an inline-four engine is listed either as I4 or L4 (for "longitudinal"). L4 is often used to avoid confusion between the digit 1 and the letter I.
The inline-four layout is a mechanically simple engine. It has a natural basic engine balance. It is smoother than one, two, and three cylinder engines. This makes it popular for economy cars. It does have a problem with secondary engine balance. This causes minor vibrations in smaller engines. These vibrations become worse as engine size and power increase. The more powerful engines used in larger cars use different an engine layout to avoid this problem.
This inline-four gasoline configuration is the most common in cars with a displacement (engine size) up to 2.4 L. Porsche used a 3.0 L four in its 944 S2 and 968 sports cars. Antique vehicles tended to have larger displacements to develop horsepower and torque. The Model A Ford was built with a 3.3 L inline-four engine.
Four-cylinder diesel engines are lower revving than gasoline engines. They often exceed 3.0 L. Toyota made a 4.1 L diesel engine that was used in the Toyota Mega Cruiser. Larger four-cylinder engines are used in industrial applications, are often made with displacements up to about 4.6 L.
Displacement can also be very small. Some cars sold in Japan have engines that are only 660 cc.
The 1913 Indianapolis 500 was won by Jules Goux driving a Peugeot. This car was powered by an inline-four engine designed by Ernest Henry. This design was big influence for racing engines. It was the first to use dual overhead camshafts (DOHC) and four valves per cylinder. This became the standard design for racing inline-four engines.
This Peugeot was sold to the American driver "Wild Bob" Burman. Burman broke the engine in 1915. Because of World War I, Peugeot could not deliver a new engine. Burman asked Harry Arminius Miller to build a new engine. With John Edward and Fred Offenhauser, Miller created a new engine. Its design was based on the Peugeot inline-four engine. This was the first version of the engine that would dominate the Indianapolis 500 until 1976. At first, the engine was named Miller. Later it became known as Offenhauser. The Offenhauser engines won five straight races at Indianapolis from 1971 to 1976. It was not until 1981 that engines such as the Cosworth V8 engine eliminated them.
Many cars produced for the pre-WWII voiturette Grand Prix motor racing used inline-four engine designs. These cars were rebuilt and reused after the war. They formed the beginnings of what is now Formula One.
Modern inline-four motorcycle engines first gained their popularity with Honda's single overhead camshaft CB750 in the 1970s. The inline-four has become one of the most common engine configurations in street bikes The inline-four is common because of its relatively high performance-to-cost ratio. All of the Japanese motorcycle manufacturers offer motorcycles with inline-four engines.
Anthony Rolfe Johnson
Anthony Rolfe Johnson, CBE (born 5 November 1940; died 21 July 2010) was an English operatic tenor. He was especially famous for singing the music of Monteverdi, Mozart and Benjamin Britten. He sang many of the operatic roles which Britten had written for Peter Pears to sing.
Anthony Rolfe Johnson was born in Tackley in Oxfordshire. When he was a child he enjoyed singing, but did not think of taking it up as a career. He started to work in farm management. Then, in his late twenties, he decided to study singing at the Guildhall School of Music and Drama. He started his singing career by singing in operas in the chorus and in small roles at the Glyndebourne Festival between 1972 and 1976. His first big operatic part was Vaudémont in Tchaikovsky’s "Iolanthe" in 1973 with the English Opera Group. Then he sang the part of Albert Herring in Britten’s opera.
In 1978, he joined English National Opera. He sang several roles in Mozart and Monteverdi operas, then he sang the Male Chorus (a solo part) in Britten’s "The Rape of Lucretia" and Aschenbach in "Death in Venice". Later he sang the title role in "Peter Grimes". He sang in opera houses all over the world, including including the English National Opera, Royal Opera House, La Monnaie in Brussels, La Scala, Milan, the Metropolitan Opera in New York City, the Vienna State Opera, and the Paris Opera.