Suppose that the microwave radiation has a wavelength of 11.6 cm . how many photons are required to heat 305 ml of coffee from 25.0 ∘c to 62.0 ∘c? assume that the coffee has the same density, 0.997 g/ml , and specific heat capacity, 4.184 j/(g⋅k) , as water over this temperature range.

If a plot weight (in g) vs. volume (in ml) for a metal gave the equation y= 13.41x and r^2=0.9981 what is the density of the metal?

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils

When water dissociates, each water molecule splits into a hydroxide ion and a) h 3 o + b) a hydrogen atom c) a hydrogen ion d) h 2 o e) oh —