What is the mass in grams of manganese in 0.412 g of mn3o4

The alkali metals (group 1) consist of lithium (3), sodium (11), potassium (19), rubidium (37), cesium (55), and francium (87). they are soft, metallic solids with low densities and low melting points. based on the data shown in figure 1, how many valence electrons do alkali metals share?

Calculate the molarity of 48.0 ml of 6.00 m h2so4 diluted to 0.250 l .

Electrons are extremely important to what area of technology? a) anti-aging research b) household product development c) electronics d) drug discovery