A chemist prepares a solution of copper(II) fluoride CuF2 by measuring out 0.069g of copper(II) fluoride into a 100.mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in /molL of the chemist's copper(II) fluoride solution. Round your answer to 2 significant digits.

Acamcorder has a power rating of 17 watts. if the output voltage from its battery is 7 volts, what current does it use?units:

The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.

In which region is the substance in both the solid phase and the liquid phase? 1 2. 3 4 mark this and return save and exit next