If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)

Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie

Project Help Please - Calculations in Soil Science

XxXSarahXxX · 2017-01-13 19:34:35

Hey, I am to complete a project that involves doing an experiment 'to determine the impact of each additive, the effects on samples of a garden soil of adding 20% by mass of (a) sand, (b) potting compost, and (c) clay on the rate of drainage of soil'. My question is: does one add the additive that would equates to 20% of…

13-01-2017 08:34PM

#1
XxXSarahXxX

Registered Users, Registered Users 2 Posts: 34 ✭

Join Date: March 2010

Posts: 27
Hey,

I am to complete a project that involves doing an experiment
'to determine the impact of each additive, the effects on samples of a
garden soil of adding 20% by mass of (a) sand, (b) potting compost, and (c) clay on the rate of drainage of soil'.

My question is:
does one add the additive that would equates to 20% of the mass of the garden soil i.e. adding 20g of sand to 100g of garden soil
or
does remove 20% of the garden soil and replace it with the additive i.e. 20g of sand mixed with 80g of garden soil.

Thanks in advance for any help!

Tagged:

analysis

soil

texture

junior cert science

coursework b

0

Comments

#2 14-01-2017 12:29AM

CramCycle

Moderators, Sports Moderators Posts: 25,982 Mod ✭✭✭✭

Join Date: February 2010

Posts: 25356

While poorly phrase it sounds like the first option. That is your total mass as a percentage of your original would be 120%

0