How much energy is required to heat 23 grams of iron from 1150 degrees celsius to 2000 degrees Celsius? The melting point of iron is 1538 degrees celsius and the specific heat capacity is 0.444 J/g*C when it is in a solid and 0.450 J/g* C when it is liquified. Latent heat of Fusion of iron is 13.8kj/mol and Latent Heat of Vaporization of iron 349.6 kj/mol

The table describes how some substances were formed substance 19 description formed by boiling pure water formed by combining three hydrogen atoms to every nitrogen atom formed by adding 5 g of sugar to 1 l of water formed by compressing carbon under high pressure based on the given descriptions, which substance is most likely a mixture?

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.

What is the correct name for the compound cocl3? a) cobalt(i) chloride b) cobalt(i) chlorate c) cobalt(ii) chlorate d) cobalt(iii) chloride