A 25 g piece of copper wire is heated, and the temperature of the wire changes from 20°C to 75°C. The amount of heat absorbed is 250 cal. What is the
specific heat of copper?
343.8 kJ
0.18 J/g °C
0.18 cal/g °C

0.2348 grams of pbcl2 used to form 44.0 ml of solution.

What method(s) do plants use to obtain nitrogen? select all that apply. absorb it from the atmosphere use bacteria to convert nitrogen to usable form obtain usable nitrogen compounds from the soil absorb nitrogen from water taken in at the roots

How does concentration affect reaction rate