Helium (He), oxygen (O), carbon (C), and selenium (Se) are all nonmetal. Using the periodic table, which pair of these nonmetal has the most similar properties

Determine the volume of carbon dioxide gas produced at STP when 2.5 g of nitroglycerin decomposes by this balanced equation. 4C3H5N3O9 (l) → 12CO2 (g) + 10H2O (g) + 6N2 (g) + O2 (g)

Name the element that is found in the third period and in the same family as Nitrogen

Which action by the British government was considered by American colonists to be a violation of their rights as Englishmen?

Identify the brønsted base in the forward reaction hpo2 - 4 (aq) + hno3 (aq) ⇀↽ no - 3 (aq) + h2po - 4 (aq). 1. h2po - 4 (aq) 2. hno3 3. hpo2 - 4 4. no - 3

Does steel wool float If u put it in water and let it sit for a week?

The four elements comprising over 90 of living matter are

Consider the gas-phase reaction, n2 (g) + 3 h2 (g) 2 nh3 (g), for which kp = 43 at 400 k. if the mixture is analyzed and found to contain 2.0 bar of n2, 2.0 bar of h2 and 27.0 bar of nh3, describe the situation:

How many moles of ions are in 285 ml of 0.0150 m mgcl2?

Given: logK=nE∘0.0592 What is the value K for this redox reaction? Zn2 + (aq) + 2 Cl - (aq) → Zn (s) + Cl2 ( g. Ecell = - 2.12 V

What is 350 kelvin on the Celsius scale of temperature?