ch 1: calculations

• what is the calculation for density (d)?

  density = mass/volume
• what is the calculation for mass in density?

  d=m/v -----> m = density x volume
• what is the conversion for standard to scientific notation ?

  ex: 201. g -> 3SF

  = 2.01 g x 10^3 g

  its 3 bc decimal was moved three times
• what is the conversion of scientific to standard?

  ex: 3.4 x 10^3 --> put it in calculator

  3400. <-- move the decimal 3 times

  answer:

  3.400=3400 L
• how do u do unit conversion method?

  ex: 1kg = 1000g

  
  

  put in calc

  given number x (1000g/1kg) = # calculated
• what are the unites to measure heat?

  Joule (J), Kilojoule (kJ)
• what are the units to measure temp?

  Kelvin (k), Degrees celcius (*C)
• what is the specific heat (s) of water?

  4.184g/*C
• how do you calculate change in temp (ΔT) ?

  ΔT =(T)final - (T)initial = ?

  
  

  ? = how many SF
• calculation of heat after calculating temp:

  q = (m) x (s) x (ΔT) = ___J

  ___ J = round the # to the amt of SF there was in (ΔT)

  ___ J