Explain how a catalyst affects the activation energy for a chemical reaction

A student environmental group is creating a campaign for locally sourced energy resources. What would be best for them to feature in their campaign? A) a coal mine located in their county. B) a farmer with a field of solar panels.

What is the standard cell notation for an electrolytic cell with aluminum and gold electrodes?

Which of the following elements ia an alkali metal? A. potassium B. calcium C. chromium D. germanium

Will Mark Brainliest In both reactions 1 and 2, the temperature change was_, meaning that the reactions heat_ heat. Positive, Gave off Negative, absorbed Neutral, Neither gave off or absorbed

A 1.10 kg piece of granite with a specific heat of 0.803 J g-1 °C-1 and a temperature of 87.3 °C is placed into 2.00 L of water at 20.3 °C. When the granite and water come to the same temperature, what will the temperature be?

H2S (g) + O2 (g) - > SO2 + H2O, how many grams of O2 are needed to make 25.0 g of SO2 (Hint: balance the equation first) a.) 12.5g b.) 18.7g c.) 32.0g d.) can't be determined

With the exception of our sun, most stars are huge, bright balls of gas located trillions of miles away from earth true or false

Which geologic time span covers the majority of Earth's history?

as the flames heat the gases in the balloon the volume of the gases increases at constant pressure the volume of all gases increases with increasing temperatures is this statement a scientific theory or law explain

At 1.0 atm, terell heats a sample of soild caffeine at 178c the soild converts directly into gas. what is the name of this phase change?