How to tell if a reaction is endothermic or exothermic by looking at it?

What are the vertical columns on a periodic table called

How many moles of phosphate ions are present in 1.85 moles of Cu3 (PO4) 2?

In 1912, chemist fritz haber developed a process that combined nitrogen from the air with hydrogen at high temperatures and pressures to make ammonia.

What is the balanced equation for calcium sulfate?

What mass of carbon dioxide gas occupies a volume of 8.13 L at 204 kPa and a temperature of 95 0 °C?

The data below were collected for the following reaction at 500 ∘C: CH3CN (g) →CH3NC (g) Time (h) [CH3CN] (M) 0.0 1.000 5.0 0.794 10.0 0.631 15.0 0.501 20.0 0.398 25.0 0.

How do i convert 3.00 moles H2 to molecules?

How can you use the chemical formulas for sucrose (C6H, 20,) and rust (Fe, O,) to classity them ionic or molecular compounds?

What is true of energy as is passes through an ecosystem? a. All of the energy in an organism is used by the animal that eats it. b. Any stored energy in an organism is used by the animal that eats it. c.

Which can associate a suspect and the firing of a gun? (its not b) A) markings on the gun's exterior B) markings on the casing C) markings on the bullet D) powder residues