551 point The pH scale is a mathematical indicator of the total amount of all ions in a solution. the amount of buffer present in the solution. concentration of \( \mathrm{H}^{+} \)present in a solution. ability to dissolve ionicly bonded substances in water. concentration of \( \mathrm{OH}^{-} \)present in a solution.

Watch the video and then solve the problem given below. Click here to watch the video. Use the graph to find the indicated value of the function, \( f(x) \). \( f(-2)= \)

Use prime factorization to evaluate \( \sqrt{625} \) 25 15 35

Write an equation for a function that has a graph with the shape of \( y=x^{2} \), but upside-down and shifted left 5 units and down 2 units. \( f(x)=\square \) (Use integers or fractions for any numbers in the expression.)

Obtener la fórmula molecular empírica y molecular de un compuesto cuya composición es de \( 40 \% \) de carbono, \( 6.7 \% \) de hidrógeno y \( 53.3 \% \) de hidrógeno. Dicho compuesto tiene una masa molar de \( 90 \mathrm{~g} / \mathrm{mol} \).

a) \( (-26+36 \div 4) \cdot 2-174 \div(-7+1) \) ROCEDIMIENTO: \( (-26+9) \cdot 2-174 \div(-7+1) \) \( (-17) \cdot 2-174 \div(-7+1) \) \( -17 \cdot 2-174 \div(-6) \) \( -34-174 \div(-6) \) \( -34-c-29 \) \( -34+29 \) -5