The minimum amount of energy that reactants must have to start a chemical reaction is called

Which of these would you expect to see in a diagram of earths energy budget? Check all that apply A) atmosphere B) stars C) clouds D) land E) moon

What is the earthworm's habitat

The Al-Aqsa Mosque and Dome of the Rock are located in

The acceleration of an object depends upon

Calculate the amounts requested if 3.30 mol Fe2O3 completely react according to the following equation. Fe2O3 + 2Al - - > 2Fe + Al2O3 a. moles of aluminum needed b. moles of iron formed c. moles of aluminum oxide formed

The face-centered gold crystal has an edge length of 407 pm. based on the unit cell, calculate the density of gold.

At stp, 1 l of br2 reacts with 3 l of f2 to completion and produces 2l of a product. what is the formula of the product

A student needed exactly 45.3ml of a solution. what piece of glassware should that student use? justify your choice.

NaCl + H2O → NaOH + Cl2 + H2 How many grams of chlorine gas, Cl2 are given off if 7.5 grams of sodium chloride, NaCl, are decomposed? Is this equation balanced?

What is the net ionic equation for the precipitation reaction between bacl2 and na2so4? a bacl2 (aq + na2so4 (aq? baso4 (s + 2nacl (aq b ba2 + (aq + so42 - (aq? baso4 (s c na + (aq + cl - (aq?