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RE: [compost_tea] RE: Baking Soda



Title: Message

*VOLUME PERCENT SOLUTIONS: Determined by the volume in milliliters of solute per 100

milliliters of solution ( milliliters solute + milliliters solvent).

Volume percent (v/v) = volume of solute in mL x 100

100 mL of solution

Example: 20 mL of ethyl alcohol in 80 mL of water is a 20% by volume solution.

 

 

*MASS-VOLUME PERCENT SOLUTIONS: Indicated by w/v%. Determined by the mass in

grams of solute per 100 milliliters of solution.

Mass-volume percent (w/v%) = mass of solute in grams x 100

100 mL of solution

Example: 1 gram of Phenolphthalein in 100 mL of 95% ethyl alcohol is a 1 w/v% solution.

 

 

Tom Jaszewski

www.livesoil.com

702-595-7012

 

-----Original Message-----
From: TaChung Huang [mailto:tachung_h@yahoo.com]
Sent: Sunday, June 01, 2003 5:39 AM
To: compost_tea@yahoogroups.com
Subject: RE: [compost_tea] RE: Baking Soda

 

Tom: How do you get 200 ml CaCl?

How many grams of NaCl would you need to use to produce 200 ml CaCl?

 

if I want to make 2% baking soda solution, since baking soda is in solid powder form, how many games of baking soda should I use in one litter of water?

 

 

 

Regards
TaChung Huang (黃大忠)

-----Original Message-----
From: Tom Jaszewski [mailto:tomj@livesoil.com]
Sent: Sunday, May 18, 2003 10:16 PM
To: compost_tea@yahoogroups.com
Subject: RE: [compost_tea] RE: Baking Soda

Percent by volume: Solutions based on percent by volume are calculated the same as for percent by weight, except that calculations are based on volume. Thus one would simply determine what percentage was desired (for example, a 20% by volume aqueous solution of sodium chloride) and the total quantity to be prepared.

If the total quantity needed is 1 liter, then it would simply be a matter of calculating 20% of 1 liter which, of course is:

0.20 NaCl * 1000 ml/l = 200 ml NaCl/l.

 

 

Tom Jaszewski

www.livesoil.com

702-595-7012

 

-----Original Message-----
From: TaChung Huang [mailto:tachung_h@yahoo.com]
Sent: Sunday, May 18, 2003 4:36 AM
To: compost_tea@yahoogroups.com
Subject: [compost_tea] RE: Baking Soda

 

 

Tom: As I read through the article, How do you make a 2% backing soda solution? What does this 2% mean?

 

 

Regards
TaChung Huang (黃大忠)

-----Original Message-----
From: tomjasz [mailto:tomj@livesoil.com]
Sent: Saturday, May 17, 2003 9:53 PM
To: compost_tea@yahoogroups.com
Subject: Baking Soda

ATTRA as usual provides some GREAT informatiom.

http://attra.ncat.org/attra-pub/bakingsoda.html




--- In compost_tea@yahoogroups.com, "TaChung Huang" <tachung_h@y...>
wrote:
> If Backing Soda is good for treating powdery mildew, is it because
of
> the Na+? According to the following equation, how will Backing soda
> treat powdery mildew???
> NaHCO3     +     H+     ----->     Na+     +     H20     +     CO2
>
> (soda)         (acid)           (sodium)       (water)        (gas)

>
>
>
> Regards
> TaChung Huang (¶À¤j©¾)




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