Answer:
exothermic
Explanation:
boiling water releases heat and is therfor exothermic
condensing is the reverse reaction and is endothermic
Ice is the solid phase of water, so it is not silicate.
1 - a, 2-b, 3-d, 4 - e
<u>Explanation:</u>
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- Separated by 6M HCl
Silver and aluminum ions can be separated using the acid, 6M HCl.
- Separated by H₂S
Copper and Calcium ions can be separated by the reagent hydrogen sulfide, H₂S.
- Separated by (NH₄)₂HPO₄ in NH₃
Magnesium and Potassium ions can be separated by the reagent Ammonium hydrogen phosphate in ammonia.
- cannot be separated
Nickel and Cobalt ion cannot be separated by the reagents given at all.
Answer:
The volume of water added is 30 mL
Explanation:
Given data
- Initial concentration (C₁): 0.4 M
- Initial volume (V₁): 10 mL
- Final concentration (C₂): 0.1 M
We can find V₂ using the dilution rule.
C₁ × V₁ = C₂ × V₂
0.4 M × 10 mL = 0.1 M × V₂
V₂ = 40 mL
The volume of water added is
V₂ - V₁ = 40 mL - 10 mL = 30 mL
Answer:
Hydrophobic amino acids
Explanation:
Hydrophobic amino acids are the amino acids which do not reside in the aqueous environment. These amino acids are generally buried within hydrophobic core of protein or the protein fold or lie in lipid portion of membrane.
Hydrophobic, as the term implies - hydro means water and phobic means fearing. These amino acids have little or almost no polarity in side chains. This lack of polarity make them water fearing.
