An atom of tungsten (W) has 74 protons. The atomic mass of tungsten is 183.84. How many neutrons does an atom of tungsten have? Round your answer to the nearest whole number.
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Consider a 1000 w iron whose base plate is made of 0.5 cm thick aluminum alloy 2024-t6 (ρ = 2770 kg/m3 and cp = 875 j/kg°c). the base plate has a surface area of 0.03 m2. initially, the iron is in thermal equilibrium with the ambient air at 22°c. assuming 90% of the heat generated in the resistance wires is transferred to the plate, determine the minimum time needed for the plate temperature to reach 200°c.

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How many atoms of nitrogen are in the chemical formula ni(w on