VOA-Sparrow Clinic The VOA-Sparrow Clinic is a collaboration between Volunteers of America and Sparrow Hospital, providing both physical and mental health care to the homeless in the Lansing area. Their location is 430 N Larch in Lansing.
Answers. Best Answer: Proposed to be an element by Carl Wilhelm Scheele in 1774, manganese was discovered by Johan Gottlieb Gahn, a Swedish chemist, by heating the mineral pyrolusite (MnO2) in the presence of charcoal later that year.
Full Answer. Argon was discovered in 1894 by Lord Rayleigh and Sir William Ramsay. The two scientists isolated the gas from a sample of clean air. The gas is found naturally in the atmosphere and comprises approximately 1 percent of the Earth's atmosphere. On the periodic table, Argon is found in period 8 and is a part of the noble gas group.