Let’s say a climate accord is reached between different countries. each wealthy country agrees that starting in 2020 they will gradually lower carbon emissions until they are 80% lower by 2060. this would require cuts in emissions of about 4% per year. 1. how much would carbon prices have to rise each year? 2. how much higher would carbon prices be by 2060? 3. how much would a gallon of gas cost in 2060 (in today’s % increase in energy prices resulted, on average, in a 2.1% decline in the quantity consumed in the short run and a 6.1% decline in the long run.)

Agroup of students is studying convection current. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other is in an area with warm air. after 10 minutes, the balloon are released from a height of 1 meter. which of the following to the students most likely observe? a) the warm balloon expands and rises. the cold balloon shrinks and sinks b) the balloon both rise. the cold balloon is larger than the warm balloon c) the cold balloon expands and rises. the warm balloon shrinks and sinks d) the balloon rise at the same rate. both balloons are the same size

Using the periodic table, complete the following. element: hydrogen symbol: h₂ molecular weight: g mass of one mole: g/mol

Silver is a white metal that is an excellent conductor. silver tarnishes when exposed to air and light. the density of silver is 10.49 g/cm3. the melting point is 962oc and the boiling point is 2000oc. a chemical property of silver is