The mass of the nails and copper sulfate solution used in this investigation was 250g. The mass of the copper and iron sulfate solution produced in this investigation would be 250g. 1. less than
2. equal to
3. greater than

The us government wants to allocate billions of dollars in the next 10 years to assure our future energy security. the funds will be spread among a variety of possible energy resources. where do you think the government should put the greatest support: solar energy, wind energy, clean coal, oil exploration, gas exploration, or a combination of sources? are there other efforts that should be explored? support your position with cited information for both questions.

Which is the best for showing percentages of different types of cars sold(gas hybrid , electric , other ) in the united states ?

Explain how the energy of rubber ball is tranforned as it roll down a ramp. give evidence that the energy of the og the ball remains the same at all points on the ramp