zzazzb Posted March 2, 2009 Report Share Posted March 2, 2009 So, Im back, this tme it's Biology, 1. enzymes are effective at low concentration because.... and 2. Explain how hear dentures enzymes (i assume dentures means worsens/slows) sank you:) Link to comment Share on other sites More sharing options...
sammee Posted March 12, 2009 Report Share Posted March 12, 2009 Does anyone know how you measure the percentage of Oxygen in Magnesium Oxide? Link to comment Share on other sites More sharing options...
Stephanie Posted March 12, 2009 Report Share Posted March 12, 2009 I should^ I did chemistry at High School... Hm... I think Magnesium Oxide is usually around 40% Oxygen, 60% Magnesium. But I don't have a clue how you work it out. Some chemical formula I've long since forgotten I'm guessing! Hope that was a little bit helpful to you! Link to comment Share on other sites More sharing options...
KatieroxNZ Posted March 13, 2009 Report Share Posted March 13, 2009 Does anyone know how you measure the percentage of Oxygen in Magnesium Oxide? I'm doing this at the moment... but i haven't done Magnesium Oxide yet... sorry! But i think it's around 45% Mg and 55%O2... I'm not completly sure... Link to comment Share on other sites More sharing options...
**Julie** Posted March 14, 2009 Report Share Posted March 14, 2009 I have to do a science assignment and one of the questions asks you to state any trends in the data. Does anyone know what I would write? Thanks. Link to comment Share on other sites More sharing options...
sammee Posted March 14, 2009 Report Share Posted March 14, 2009 I should^ I did chemistry at High School... Hm... I think Magnesium Oxide is usually around 40% Oxygen, 60% Magnesium. But I don't have a clue how you work it out. Some chemical formula I've long since forgotten I'm guessing! Hope that was a little bit helpful to you! Does anyone know how you measure the percentage of Oxygen in Magnesium Oxide? I'm doing this at the moment... but i haven't done Magnesium Oxide yet... sorry! But i think it's around 45% Mg and 55%O2... I'm not completly sure... Thankies, guys Haven't worked it out yet, for an assignment... if I work it out! Sorry, Julie! I have no idea how to Link to comment Share on other sites More sharing options...
Jen Posted March 15, 2009 Report Share Posted March 15, 2009 I have to do a science assignment and one of the questions asks you to state any trends in the data. Does anyone know what I would write? Thanks. It depends what your data is for and how it is displayed. A trend basically is the relationship between the data and what you are trying to find out. If you have a graph for example, you would look to see if it is a linear relationship, or whether it is positive or negatively sloping. Also look for any outliers that may be influencing the results and the strength of relationship (ie. how many data points do you actually have?). I hope that helps a bit . Link to comment Share on other sites More sharing options...
**Julie** Posted March 15, 2009 Report Share Posted March 15, 2009 I have to do a science assignment and one of the questions asks you to state any trends in the data. Does anyone know what I would write? Thanks. It depends what your data is for and how it is displayed. A trend basically is the relationship between the data and what you are trying to find out. If you have a graph for example, you would look to see if it is a linear relationship, or whether it is positive or negatively sloping. Also look for any outliers that may be influencing the results and the strength of relationship (ie. how many data points do you actually have?). I hope that helps a bit . Thanks so much for your help Jen. Link to comment Share on other sites More sharing options...
zzazzb Posted March 17, 2009 Report Share Posted March 17, 2009 For my health project, (which is my least favourite subject, but i'm reasonably good at) i need 20 people to say 5 words they would use to describe 'youth' (12-20) for example. rude. dissruptive. annoying. or pleasent. helpful. kind etc. and (if you want) your age and gender thankyou. Link to comment Share on other sites More sharing options...
Zetti Posted March 17, 2009 Report Share Posted March 17, 2009 18 and Female 5 words unpredictable, complicated, annoying, interesting, optimistic Link to comment Share on other sites More sharing options...
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