Planet X has a thin atmosphere with little carbon dioxide, so its overall temperature will be higher than the Earth's temperature. True
or
False

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?

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3 -> a2cr(no3)3 + a3ag2so4

Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?