Answer:
For the reaction
2
H
2
+
O
2
→
2
H
2
O
, how many moles of water can be produced from 6.0 mol of oxygen?
Chemistry Mole Ratios
1 Answer
Stefan V.
Dec 5, 2015
12 moles H
2
O
Explanation:
Your tools of choice for stoichiometry problems will always be the mole ratios that exist between the chemical species that take part in the reaction.
As you know, the stoichiometric coefficients attributed to each compound in the balanced chemical equation can be thought of as moles of reactants needed or moles of products formed in the reaction.
In your case, the balanced chemical equation for this synthesis reaction looks like this
2
H
2(g]
+
O
2(g]
→
2
H
2
O
(l]]
Notice that the reaction requires
2
moles of hydrogen gas and
1
mole of oxygen gas to produce
2
moles of water.
This tells you that the reaction produces twice as many moles of water as you have moles of oxygen gas that take part in the reaction.
You know that your reaction uses
6.0
moles of oxygen. Assuming that hydrogen gas is not a limiting reagent, you can say that the reaction will produce
6.0
moles O
2
⋅
2
moles H
2
O
1
moles O
2
=
12 moles H
2
O
Answer:
An <u>Orbital </u>is the probability distribution of an electron in an atom or molecule.
Explanation:
As we know atom consists of sub-particles commonly known as protons, neutrons and electrons. The outer space around the nucleus where the probability of finding electrons is maximum is known as orbital. As the electrons are not precisely ordered around the nucleus hence it is not easy to tell the exact position of an electron.
Hence, four quantum numbers are used to locate the position of electrons around the nucleus.
i) Principle Quantum Number:
This number explains the main energy level which tend to increase in energy as the distance of electrons from nucleus are increased. Principle Quantum Numbers are integer number ranging from one to infinity. Hence, increase in this quantum number results in increase of the size of orbital.
ii) Azimuthal Quantum Number:
This Quantum Number explains the direction of particular orbital in 3-dimensional space. Also it is responsible for the shape of an orbital.
iii) Magnetic Quantum Number:
This Quantum Number also tells the direction of orbital in 3D space with respect to x, y and z axis.
iv) Spin Quantum Number:
This Quantum Number tells about the spin direction of an electron about its axis which may be clockwise or anticlockwise.
I believe the correct answer would be the third option. It is the burette that is the apparatus that is used in titration. It is the best apparatus to use since you can easily control the amount you add to the sample solution. Also, you can easily read off the volume that was added.
Answer:
1. salt bridge - tertiary structure
2. amide bond - primary structure
3. disulfide bond - tertiary structure
4. beta-pleated sheet - secondary structure
5. alpha helix - secondary structure
Explanation:
A salt bridge is simply a neutralisation reaction between two molecules of opposite charge. Examples are: carboxylate ion end (RCOO−) of either aspartic acid or glutamic acid and ammonium ion end (RNH3+) from lysine or guanidinium (RNHC(NH2)2+) of arginine. The disulfide bond is usually gound in the Cysteine amino acid with the structure R−S−S−R′. Also, it is usually derived by the bonding of two thiol groups. They are both important components of protein and they determine the overall structure of protein and hence its fold.
For beta-pleated and alpha-helix structures, they are usually defined by the varying patterns of hydrogen bonds between the amine- (-NH2) and carboxyl-(-COOH) groups which are at the side chain of the amino acids. They determine the geometry of the protein hence why they are secondary structures.
Amide bond is an unbranched sequence of amide(peptide) bonds which form long chains of polypeptides (polyamides). This shows that it is a primary structure. They are also formed by dehydration where the amine- (-NH2) and carboxyl-(-COOH) groups bonds together to form a peptide bond with the loss of water.
Hello there.
Water molecules have a polarity, which allows them to be electrically attracted to other water molecules and other polar molecules by weak chemical bonds known as
Hydrogen bonds