One mole of a substance contains 6.02 x 1023 molecules. The atomic number of Li is 3 and the atomic mass is approximately 7 . If you have three moles of Li, how many grams does it weigh?
A. 9
B. 21
C. 7 x 6.02 x 1023
D. 3 x 6.02 x 1023
B
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Which of the following soil organisms play a major role in decomposing plant matter?
A. bacteria B. fungi C. protozoa D. viruses E. bacteria AND fungi
Seasonality occurs on planet Earth because of its ________ with respect to the plane it travels around the Sun
Fill in the blank(s) with correct word
From looking at the plant sunflower plant you conclude:
A) That the missing nutrient is mobile and likely Ca. B) That the missing nutrient is mobile and likely N. C) That the missing nutrient is non-mobile and likely Ca. D) That the missing nutrient is non-mobile and likely N.
The majority of phyla from domain Bacteria were discovered by
a. sequencing isolates cultivated in laboratory media. b. sequencing DNA extracted directly from environmental samples. c. using enrichment media. d. transmission electron microscopy.