Determine the numbers of grams of water can be heated
Determine the numbers of grams of water can be heated from 25.0 degrees Celsius to 35.0 degrees Celsius by the heat released from 85.0g of iron that cools from 85.0 degrees Celsius to 30.0 degrees Celsius?
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Calculate the "Lanthanide contraction" and which other elements does it effect? Determine the formal charge on each atom N2O?
Its initial speed is 1.0 m/s, however after one revolution; the speed has reduced to 0.75 m/s, due to friction. Determine: (i) the coefficient of kinetic friction and (ii) the number of revolutions the block will build before stopping.
In procedure B, what will be the effect on the measured percent water in the unknown if the empty crucible is not heated long enough to totally dry it prior to weighing?
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A lens having a focal length of 20 cm is positioned 45 cm in front of the lens with a focal length of 5.0 cm. Determine how far from the second lens is the final image of an object infinitely far from the first lens? Answer must be in cm.
The Supreme Court has said that z-scores beyond z* = 2 or 3 are generally convincing statistical evidence. For a two-sided test, what significance level corresponds to z* =2? To z* = 3?
The two electrons are placed on an axis in such a way that q1 is at (0,1),q2 is at (0,-1) and proton q3 is positioned at (-1,0). Determine the electric field due to the three charges at (1,0)?
Write down an equation for the reaction and, assuming that all the Mg was converted to the magnesium oxide, determine the mass of the magnesium originally present in crucible?
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