Which word or phrase means, " An organism that lives in or on another organism and harms it?" 1 Parasite 2Classification 3Contaminate 4 Noninfectious Disease

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?

How many moles are in 7.2 x 10^23 carbon molecules? (*round to the nearest hundredth and include the unit "mol c" after your number) question 6 options:

Calculate the number of grams of sodium in 3.00 g of each sodium-containing food additive.