To calculate the number of neutrons in an element written in isotopic notation you should use which formula?

The temperature of a 35.1 g sample of iron increases from to If the specific heat of iron is how many joules of heat are absorbed?

Electromagnetic radiation with a wavelength of 640 nm appears as orange light to the human eye. The frequency of this light is ________ s-1. Constants c = 2.98 x 108 m/s h = 6.626 x 10-34 Js

The electron domain and molecular geometry of SO3 are ________.

The formula weight of Zn(ClO4)2 is ________ amu.

The central atom in the ICl4- ion has ________ nonbonded electron pair(s) and ________ bonded electron pair(s) in its valence shell.

What is the mass % of aluminum in aluminum sulfate (Al2(SO4)3) rounded to three significant figures?

What volume (mL) of a concentrated solution of sodium hydroxide (6.00 M) must be diluted to to make a solution of sodium hydroxide?

Calculate the energy (J) found in one photon of visible light if the wavelength is 589 nm. Constants c = 2.98 x 108 m/s h = 6.626 x 10-34 Js

The hybrid orbital set used by the central atom in ClO2- is ________.