Use bond energies to calculate the enthalpy change for the following reaction. H2 (g) + CO2 (g) ⟶ H2O (g) + CO (g)

3 - Which process use to convert heavier hydrocarbons into lighter (gasoline) in the absence of oxygen and in the presence of catalyst? A - Fractional distillation B - Melting C - Cracking D - Boiling

Which types of organisms are required to complete the nitrogen cycle

Through a process is known as electrolysis, water can be split into hydrogen and oxygen. What type of reaction is this? Give an explanation for your choice.

Which structure could a scientist look for in a plant that would identify it as a club moss rather than a liverwort? phloem spores rhizoids flowers which one of these is the correct answer?

Complete the sentences to explain what a similar treatment would predict for the effective nuclear charge on boron valence electrons and whether you would expect the effective nuclear charge to be different for borons 2s electrons compared to its 2p

The plunger on a bicycle pump with a 400 mL volume cylinder is depressed such that the pressure in the pump increases from 1.00 atm to 6.00 atm.

All of the following statements about protons are true except? A. Protons circle the nucleus of an atom. B. Protons carry a positive charge. C. Protons are found in the nucleus of an atom. D. Protons have a mass of 1 AMU.

What is a particle diagram to illustrate the composition of air

The net ionic equation for the reaction of aqueous iron (|||) ions and aqueous hydroxide ions.

Aspirin has a formula c9h8o4. what is the molar mass of aspirin? 1. 95 g 2. 220 g 3. 180 g 4. 325 g