A. every action there is an equal and opposite reaction. B. attraction or repulsion between two charges C. volume of a given mass of gas increases or decreases D. temperature remaining constant, volume of a given mass of a gas varies inversely
A. NaAlO2 B. H2O C. Al2O3 D. CaSiO3 Water is a chemical substance with the chemical formula H2O. Its molecule contains one oxygen and two hydrogen atoms connected by covalent bonds. Water is an inorganic, transparent, tasteless, odorless, and nearly colorless chemical substance, which is the main constituent of Earth’s hydrosphere, and the fluids of … Read more
A. Argon B. Xenon C. Helium D. Krypton Heliox is a mixture of oxygen and helium and is often used in the deep phase of a commercial deep dive to eliminate nitrogen narcosis. Heliair is a form of trimix that is easily blended from helium and air without using pure oxygen. It always has a … Read more
A. Oxygen and hydrogen B. Oxygen, hydrogen, acetylene and nitrogen C. Oxygen, acetylene and argon D. Oxygen and acetylene
A. Dative bond B. Covalent bond C. Both A and B D. Ionic Bond
A. Nitrogen B. Hydrogen C. Carbon dioxide D. Oxygen
A. Black paint B. PVC C. Teflon D. polystyrene
A. Iron, Zinc and Titanium B. Iron and Tin C. Iron, Brass and Tin D. Copper, Tin and Zinc Modified gunmetal contains lead in addition to the zinc; it is typically composed of 86% copper, 9.5% tin, 2.5% lead, and 2% zinc. It is used for gears and bearings.
A. Methane, Ethane and Hexane B. Ethane, Hexane and Nonane C. Methane, Hexane and Nonane D. Methane, Butane and Propane
A. Gerontology B. Hstologyh C. Pysiology D. Anthropology Gerontology is a field of science that seeks to understand the process of aging and the challenges encountered as seniors grow older. Gerontologists investigate age, aging, and the aged. Gerontologists study what it is like to be an older adult in a society and the ways that … Read more