Other Biology Answers

Give at least ten (10) comparisons of growing crops inside a greenhouse with crops grown under natural environment? 

What does it mean that the scientific perspective views the universe and everything in it as “objects” and not as “subjects?”

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he concentration of NaCl, KCl and Phosphate in working strength 1 x PBS is 0.137M NaCl, 0.012M Phosphate, 0.0027M KCl, pH 7.4 How do they compare to the concentrations you calculated for 10x PBS?

The composition of PBS is 0.137M NaCl, 0.012M Phosphate, 0.0027M KCl, pH 7.4. Below is the protocol to make 1 litre of 10x concentrate PBS.

Combine the following:

• 80g NaCl
•  2g KCl
•  14.4g Na₂HPO₄ (dibasic anhydrous)
•  2.4g KH₂PO₄ (monobasic anhydrous)
• 800mL distilled H₂O 

1. Adjust pH to 7.4 with HCl
2. Add H₂O to 1L
3. Autoclave for 20 minutes on liquid cycle. Store at room temperature.

Which ions are being produced by this process, assuming that each of the chemical compounds dissociate into their constituent parts once they are dissolved in water?

uestion 1

The pH of a solution describes its acidity or alkalinity: Describe how pH and H3O+ concentration are related and explain why diluting an acid raises the pH, but diluting a base lowers the pH.

For 2.1 seconds, a barracuda chased a smaller fish. Both fish were near a coral reef, 225 meters north of the closest beach. During the chase, the barracuda swam east at 4.0 meters per second. How far did the barracuda swim while it was chasing the smaller fish?

H₂PO₄^- _(aq) ⇆  H⁺_(aq) + HPO₄^2-_-(aq)

Based on the equation above, which ion plays the role of hydrogen-ion donor (acid) and which ion plays the role of hydrogen-ion acceptor (base) in PBS?

The composition of PBS is 0.137M NaCl, 0.012M Phosphate, 0.0027M KCl, pH 7.4. Below is the protocol to make 1 litre of 10x concentrate PBS.

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  Combine the following:

 • 80g NaCl

• 2g KCl

• 14.4g Na2HPO4 (dibasic anhydrous)

• 2.4g KH2PO4 (monobasic anhydrous)

• 800mL distilled H2O

1. Adjust pH to 7.4 with HCl

2. Add H2O to 1L

3. Autoclave for 20 minutes on liquid cycle. Store at room temperature.

 Which ions are being produced by this process, assuming that each of the chemical compounds dissociate into their constituent parts once they are dissolved in

water?