HELP QUICKLY PLEASE A sample of water has a mass of 100.0 g. Calculate the amount of heat required to change the sample from ice at –45.00°C to water vapor at 175.0°C. Relevant constant values are given to the right. ΔHvap, water = 40.7 kJ/mol

ΔHfus, water = 6.01 kJ/mol

Cp, vapor = 1.84 J/g•°C

Cp, liquid = 4.18 J/g•°C

Cp, ice = 2.09 J/g•°C

molar mass of water = 18.00 g/mol

1) these are barrel shaped microtubules in most animal cells, that organize the spindles during cell division

Butadiene undergoes a reaction at a certain temperature in the gas phase as follows: 2c4h6(g) --> c8h12(g) the following data were collected for this reaction: time (min) [c4h6] (m) 0 0.36 15 0.30 30 0.25 48 0.19 75 0. determine the order of the reaction and the rate constant. 1st order and k = 4.3x10 -4 s-1 1st order and k = 2.3x10-4 s-1 2nd order and k = 4.3x10-4 s-1 2nd order and k = 2.3x10-4 s-1 zero and k = 4.3x10-4 s-1

Which diagram shows the correct way to represent an ionic compound of magnesium oxide?