One day on her walk home from school, Leann noticed some rust on an old car Leann knows that when iron and oxygen chemically react, they can form rust She remembered that models can be used to summarize what happens in a chemical reaction. She decides to create a model of this
chemical reaction What is the name that describes the iron and oxygen found on the left side of Leann's model?
4 Fe + 302 -
• 2Fezos
A products
reactants
C. Scientific notation
D. Synthesis

What property is a characteristic of a substance that can be observed and does not change the identity of the substance

20. threshold braking in the vehicle's braking system occurs when a. the brake pedal is pushed, heel on floorboard, with full foot pressure. b. the brakes are exerting full braking power, without traction loss. c. the driver begins pushing down the brake pedal, with moderate slowdown. d. the brakes just begin to take hold with a gradual slowdown.

Urgent pls a. coal consumption levels off and remains flat. b. petroleum, natural gas, and renewables show an increase in consumption c. more nonrenewable resources continued to be consumed than renewable. d. there is little projected increase in nuclear energy use. e. carbon dioxide emissions are projected to decline as we approach 2040. global energy consumption is defined as the total energy used by an individual or organizations from around the world. use the graph above to analyze the projected energy consumption from now until 2040. which statements in the prompt apply? a) a, b, d b) b, c, d c) a, c, d d) a, b, c, d