An infrared wave has a wavelength of 0.00005 m. What is this wavelength in scientific notation?
A. 5.0 x 10-6 m
B. 5.0 x 10-5 m
C. 5.0 x 10-4 m
D. 5.0 x 10-3 m

Can someone please help me fast!!

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?

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins

20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?