A compound is 66.04% C, 4.63% H, and 29.33% 0. What is its empirical formula​

Iwll give extra points to who gets this for ! what type of reaction is this? ?

What stress will shift the following equilibrium system to the left? n2(g) + 3h2(g) ⇌ 2nh3(g) adding more n2(g) adding more nh3(g) increasing the pressure of the system reducing the volume of the container

Express the following number in scientific notation. 0.026890 =