The answer is A because limestones are mostly calcium carbonate. When acidic rainwater falls on limestone a chemical reaction happens. These dissolve in the water, and then are washed away, weathering the rock.
Answer: If an object is more dense than water it will sink when it’s in water, and if it is less dense than water it will float.
Answer:
1. changing from liquid to gas state
Evaporation
2. the combining substances in a reaction
Reactants
3. radiation
Gamma Rays
4. slow oxidation
Rust
5. melting point of water
0˚ C (0 degrees Celsius)
6. a reaction between a substance and oxygen
Oxidation
7. pertaining to the nucleus of an atom
Nuclear
8. to fuse or join together
Fusion
9. rapid oxidation
Burning
10. heat
Thermo-
Answer:
The three dimensional structure of a protein has the following levels: primary, secondary, tertiary and Quaternary.
1. Primary structure of protein is the unique order or <u>sequence of amino acids</u> in a polypeptide chain. The amino acids are linked together by<u> peptide bonds.</u>
2. Secondary structure of protein is the <u>folding or coiling of the polypeptide</u> chain to form a three dimensional structure. It is of two types: α-helix and β-sheets. This structure is stabilized by <u>hydrogen bonding</u>.
3. Tertiary structure of a protein refers to the<u> compact globular structure</u> stabilized by <u>non-specific hydrophobic interactions, hydrogen bonding, salt bridges and disulfide bonds</u>.
4. Quaternary structure of a protein is formed by the<u> aggregation of multiple polypeptide chains.</u> It is stabilized by <u>non-covalent interactions and disulfide bonds.</u>
Answer:
The pH of the resulting solution is 12.52.
Explanation:
n = number of moles
V = volume of the solution in Liters
1)1 mol of HCl gives 1 mol of hydrogen ion.
Concentration of the hydrogen ion = 0.1 M
Volume of the solution = 10 mL = 0.010 L
Moles of hydrogen ions = = 0.001 mol
2) 1 mol of NaOH gives 1 mol of hydroxide ion.
Concentration of the Hydroxide ions = 0.2 M
Volume of the solution ,V'= 8 mL = 0.008 L
Moles of hydroxide ions ,n ' = 0.0016
1 mol of HCl neutralizes 1 mol of NaOH ,then 0.001 mol of HCl will neutralize 0.001 mol NaOH.
So left over moles of hydroxide ions in the solution will effect the pH of the solution:
Left over moles of hydroxide ions in the solution = 0.0016 mol - 0.0010 mol = 0.0006 mol
Left over concentration of hydroxide ions:
pH +pOH = 14
pH = 14 - 1.48 = 12.52
The pH of the resulting solution is 12.52.