Help please! How much of each starting material would you use to prepare 2.00 L of each of the following solutions?
(a) 0.210 M NaOH from solid NaOH

(b) 0.260 M NaOH from 1.00 M NaOH stock solution

(c) 0.300 M K2CrO4 from solid K2CrO4

(d) 0.220 M K2CrO4 from 1.75 M K2CrO4 stock solution

The sun a. will become a red giant within two to three million years b. is in its main sequence, which willlast thousands of years c. is in its main sequence, which will last billions of years. d. will explode as a supernova after its main sequence

Ascientist has predicted that the population of earth will continue to grow exponentially until the year 2300. at that point, we will reach carrying capacity of earth’s resources, and population growth will plateau. if the scientist’s prediction is correct, what can you predict about human energy use at that time? justify your answer by explaining the relationship between population growth and energy use. (5 points)

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