O ácido tartárico é encontrado em muitas frutas inclusive em uvas. Ele é em parte responsável pela característica seca de certos vinhos. Calcule o pH e a concentração do íon tartarato (C4H4O62-) para uma solução de 0,250 mol/L de ácido tartárico, para a qual as constantes de dissociação ácida (H2C4H4O6) são: Ka1 = 1,0x10-3 e Ka2 = 4,6x10-5. Explique quaisquer aproximações ou suposições que você tenha a fazer em seu cálculo.

This line graph compares the growth of plants that were kept in the sun for different amounts of time.a)  on day 7, the plants kept in the sun for 3 hours were how tall? b)  on day 7, the plants kept in the sun for 6 hours were how tall? c)    on day 10, the plants kept in the sun for 9 hours were how tall? d)  on day 11, the plant that was grown with 1 hour of sunlight was how tall? e)  based on the graph, the plant grows best in what amount of sunlight?

According to the tide table below what time of day will the highest tide occur? (2 pt) the highest tide will occur at

From the options provided for each element below, choose the properties that it may have based on its location in the periodic table fluorine (f): highly reactive nonmetal shiny a conductor