q = mc∆t

[yusufhamood]

I was wondering when finding q = mc∆t when do you multiply the mass by 0.997

[lazaward]

When calculating the mass of water. Sometimes it’ll give you say 375mL as the mass. You would use the density formula (m=dv) and multiply 0.997 (density of water) by the volume to work out your mass in grams.

e.g
375mL to grams
m = dv
m = 0.997 x 375
m = 373.875g

Hope this helps!

[yusufhamood]

Thank you so much   

[Yertle the Turtle]

We were told today that last year as the first year of the study design they were willing to accept g:mL as being 1 when related to water, but this year you have to use the density of water as 0.997 g/mL, and therefore you use this figure with the d=m/V formula whenever you change V to m or vice versa.
Hope this helps.