Write 0.000599 in scientific notation. A. \( 599 \times 10^{-5} \) B. \( 0.599 \times 10^{-4} \) C. \( 5.99 \times 10^{-6} \) D. \( 5.99 \times 10^{-4} \)

100000 unidades \( =\quad \) decenas de mil

Calcule a energia livre de Gibbs padrão, \( \Delta_{\mathrm{r}} \mathrm{G}^{0} \), da reação: \( \mathrm{CO}_{(\mathrm{g})}+1 / 2 \mathrm{O}_{2(g)} \rightarrow \mathrm{CO}_{2(g)} \) à \( 25^{\circ} \mathrm{C} \) Dados: \( \Delta, G^{\circ}: \mathrm{CO}_{2(g)}=-394,4 \mathrm{~kJ} \mathrm{~mol}^{-1}, \mathrm{CO}_{(g)}=-137,2 \mathrm{~kJ} \mathrm{~mol}^{-1} \)

3. Irrigation System (Rational Algebraic Expressions): - The garden will require an irrigation system that costs \( \$ 10 \) per meter of piping. The length of piping needed can be modeled by the expression \( \frac{2 l+2 w}{2} \), where \( l \) and \( w \) are the length and width of one plot, respectively. - If each plot is 4 meters by 6 meters, calculate the total cost of the piping for the entire garden using rational algebraic expressions. 4. Plant Growth Analysis (Systems of linear Equations): - Two types of plants will be grown in the garden: Type A and Type B. The growth rate of Type A is given by the equation \( y=2 x+5 \) and for Type B by \( y=-x+15 \), where \( x \) is the number of weeks since planting, and \( y \) is the height in centimeters. Determine after how many weeks the heights of Type A and Type B plants will be the same. Solve the system of linear equations to find this intersection point.

Combine the like terms to create an equivalent expression: \( 8 t+1+(-4 t)+(-6) \)

Considera gli insiemi \( A, B, C \), formati rispettiva mente dalle cifre dei numeri 42024,21012 22400 . Determina: a. \( (A-B)-C \); b. \( (C-B)-A \); c. \( C-(B-A) \).