For the following pairs of ions, use the concept that a chemical compound must have a net charge of zero to predict the formula of the simplest compound that the ions are most likely to form.

f. $\text{Mg}^{2+}$ and $\text{N}^{3-}$

For the mixed number, use two methods to write it as. a decimal. Do you get the same result using each method?

$$9 \dfrac{2}{9}$$

Find the distance between the tow points. (-14, -22), (-20, -32)

By what factor will the kinetic energy change if the speed of the baseball is decreased to 55.0 mi/h?

In the above example we found that the energy released in the burning of $1 \mathrm{~kg}$ of carbon to give $\mathrm{CO}_2$ is $9.1 \times 10^7 \mathrm{~J}$. In that calculation we supposed that the original carbon atoms were separate free atoms. [Specifically, the energy in the above equation is for the case that the $\mathrm{C}$ atom is free and unattached.] If the $\mathrm{C}$ atoms are bound in a liquid or solid, some energy is needed to detach them, and the energy yield is smaller. Given that graphite (one of the solid forms of pure carbon) has a binding energy of $7.4 \mathrm{eV}$ per atom, find the energy released when $1 \mathrm{~kg}$ of graphite burns in $\mathrm{O}_2$ gas to form $\mathrm{CO}_2$. Compare your answer with the result in the above example.

What is the molar mass of boron trichloride?

Suppose Jim travels 2 radians per second as he rotates on a Ferris wheel. a. How many radians $\theta$ does he sweep out in t seconds as the Ferris wheel rotates? b. Define a function v that relates Jim's vertical distance above the horizontal diameter of the Ferris wheel to the number of seconds t elapsed since Jim started to rotate counter-clockwise from the 3 o'clock position. (Define the relevant variables.) c. Define a function h that relates Jim's horizontal distance to the right of the vertical diameter of the Ferris wheel to the number of seconds t elapsed since Jim started to rotate counter-clockwise from the 3 o'clock position. (Define the relevant variables.) d. Over what time interval does Jim complete one revolution?

Calculate the molar mass of $\ce{NaCH3COO}$.

Give the chemical symbols for the following elements: (a) selenium (b) indium (c) manganese (d) silver (e) mercury (f) krypton (g) palladium (h) thallium (i) uranium (j) tungsten

Find the value of the variable. 8c = $60.00

For the sentence below, write prepositional phrase and underline the preposition. Then circle the object of the preposition.

Syncopation means the shifting of rhythmic accents within a song or composition.

Use a reference angle to find the exact value of the sine, cosine, and tangent of the angle

$$\frac { 11 \pi } { 6 }$$

In an aqueous electrolytic cell, nitrate ions never react at the anode, but nitrite ions do. Explain.

Gordon Moore, one of the founders of Intel Corporation, predicted in 1965 that the number of transistors on an integrated circuit chip would double every 18 months. This is "Moore's law," one way to measure the revolution in computing. Here are data on the dates and number of transistors for Intel microprocessors:

Explain why Moore's law says that the number of transistors grows exponentially over time.