Make an observation.
Ask a question.
Form a hypothesis, or testable explanation.
Make a prediction based on the hypothesis.
Test the prediction.
Iterate: use the results to make new hypotheses or predictions. Hope this helps
Step 7- Communicate. Present/share your results. Replicate.
Step 1- Question.
Step 2-Research.
Step 3-Hypothesis.
Step 4-Experiment.
Step 5-Observations.
Step 6-Results/Conclusion.
Answer:
Hello my friend! The amount of 31g of KNO3 will precipitate!
Explanation:
At 40 ∘C the solution has 45 g of KNO3 per 100 g of water and it can contain up to 63 g of KNO3 per 100 g of water. At 0 ∘C the solubility is ~ 14 gKNO3per 100 g of water, so 31 gKNO3 per 100 g of water will precipitate
Answer:
pH = 1.348
Explanation:
- H2SO3 + H20 ↔ H3O+ + HSO3-
∴ Ka1 = 1.7 E-2 = ( [ H3O+ ] * [ HSO3- ] ) / [ H2SO3 ]
∴ <em>C </em>H2SO3 (aq) = 0.163 M
- HSO3- + H2O ↔ H3O+ + SO32-
∴ Ka2 = 6.4 E-8 = ( [ H3O+ ] * [ SO32- ] ) / [ HSO3- ]
∴ Kw = 1 E-14 = [ H3O+ ] * [ OH- ]
since Ka1 >>> Ka2 ( difference between the constants is greater than the order of E3 ); then the most importan equilibrium is Ka1 and we can assume that [ SO32- ] <<< [ HSO3- ]
mass balance:
⇒ <em>C </em>H2SO3 = 0.163 = [ H2SO3 ] + [ HSO3- ]......(1)
charge balance:
⇒ [ H3O+ ] = [ HSO3- ]...........(2) where [ OH- ] and [ SO32- ] is neglected. the first comes from water and the second comes from Ka2.
(2) in (1):
⇒ [ H2SO3 ] = 0.163 - [ H3O+ ]......(3)
(2) and (3) in Ka1:
⇒ 1.7 E-2 = [ H3O+ ]² / ( 0.163 - [ H3O+ ] )
⇒ [ H3O+ ]² + 1.7 E-2 [ H3O+ ] - 2.771 E-3 = 0
⇒[ H3O+ ] = 0.045 M
⇒ pH = - Log [ H3O+ ] = - Log ( 0.045 )
⇒ pH = 1.348
A.) Collagen is a structural protein and hemoglobin is a protein involved in the transport of oxygen. Good Luck