Explore hundreds of interesting chemistry questions and answers (q & a).... Read More Become a part of the community, collaborate with the like-minded people from across the world, and share answers about chemistry questions. You can also ask any question in case you do not find answers in our library or help someone by providing your best answer.
To solve this problem remember one thing: the volume will remain constant because the gas is placed in a steel tank. The formula you need to follow is: P1/T1 = P2/T2. Input all of the needed details and you will reach the answer 84.59 Degrees Celsius which is letter C in the choices. The gas...Read More
H-F is the most ionic out of all the choices available. This is because when the differences are computed, this has the greatest electronegativity difference. Take note that only those with differences that are 1.7 and higher are considered to be ionic.
A perfect ionic bond needs to have...Read More
NF3 has a trigonal pyramidal structure. Nitrogen has three bonds with fluorine and the presence of one lone pair. There is a good amount of polarity due to the electronegativity differences in both atoms. Nitrogen develops a semi-positive charge and the fluorine ions develop semi-negative...Read More
The sum of the coefficients is basically the total number of reacting molecules and products formed. However, you need to balance the equation first in order to reach the right value. For that, balance the aluminum with the oxygen and the product side.
This will give use 4 aluminum atoms...Read More
The correct answer is answering E: the atoms have the same atomic number, but a different number of neutrons. This is key. The atomic number signifies how many protons an atom has. If it has three protons, the atomic number is three. When the electrons are greater or less than the protons, the...Read More
Given: Sea water contains roughly 28.0 g of NaCl per liter.
To find: What is the molarity of sodium chloride (NaCl) in sea water?
Molecular mass of NaCl= 58.4
Therefore 1 mole of NaCl= 58.4 g
Number of moles in sea water= 28/58.4= 0.479
Option B - increase in pressure.
The extent of adsorption is directly proportional to the pressure. Therefore, increase in pressure will cause increase in rate of adsorption.
Keep in mind that temperature also has a role to play in the rate of adsorption. At low temperature, the ext...Read More
The volume occupied by the Ammonia gas is C. 67.2 Liters. Ammonia is a compound that is composed of both nitrogen and hydrogen. Ammonia is normally used in order to rouse people into consciousness when they faint. Take note that Ammonia gas can be dangerous when it is inhaled in large amounts....Read More