Consider a hypothetical field. The concentration of nitrates in the soil is 10 ppm. The concentration of nitrates in the roots of grass growing in the field is 30 ppm. Nevertheless, the roots continue to absorb nitrates from the soil. How is this likely to happen? 

What is the charge on the cesium (Cs) ion?

Group 7A elements (group 17) are also called:

Select the unit that is NOT an energy unit.

What group is sodium (Na) in?

Given the table of specific heat values below, what is the identity of a 10.0 g metal sample that increases by 14.0oC when 62.9 J of energy is absorbed? Element Specific Heat (J/goC) Au 0.128 Ag 0.235 Cu 0.385 Fe 0.449 Al 0.903

The plum pudding model proposed that negatively charged electrons were held in a sphere of positive charge.

Determine the answer for the equation below with correct number of significant figures: 3.215 x 13.2 ÷{“version”:”1.1″,”math”:”÷”} 0.218 = __________

What is the value of 27oC on the Kelvin temperature scale? _______ Kelvin.

The Olympic Games shot put field event uses a 16 pound (lb) shot. Identify the correct solution map to convert from pounds to kilograms using prefix multipliers and the given conversions of 16 oz. = 1 lb and 453.6 g = 16 oz.