Explanation:
Mole ratio of Oxygen to Hydrogen gas = 1 : 2.
If we use 3.0 moles of oxygen gas, we would need 3.0 * 2 = 6.0 mol of hydrogen gas.
However we only have 4.2 mol of hydrogen. Therefore hydrogen is limiting and oxygen is in excess. (B)
Answer:
covalent bonding
Type of Bonding: Sulfur Dioxide is a process of covalent bonding, since Sulfur and Oxygen are both non-metals. The Sulfur is in the center surrounded by 2 Oxygen atoms.
Answer:
Answers may vary
Explanation:
Mol is the amount of molecules in something. Mol are similar to donuts, if you have a dozen of something you have 12 of them. If you have a mol of Hydrogen gas you 6.02•10^23 molecules of Hydrogen gas. If you are taking a chemistry class you will probably receive questions involving converting grams to mol and vice versa.
Converting Grams to Mol:
grams of x•(1/molecular mass of x)
note: you can find molecular mass of x by looking at the masses of the elements you need to add up in the periodic table
Converting Mol to Grams:
mol of x•(molecular mass of x)
<u>Given:</u>
Pressure = 565 torr
<u>To determine:</u>
Corresponding pressure in atmospheres
<u>Explanation:</u>
Pressure is commonly expressed in units like:
Atmosphere (atm), Torr or mmHg
The SI unit is atm, where
760 torr = 1 atm
Thus, a pressure reading of 565 torr corresponds to:
565 torr * 1 atm/760 torr = 0.743 atm
Answer:
Explanation:
Melting: it is a phase change from solid to liquid. It is usually attained when a substance reaches it melting point as heat is supplied to it. The vibrating particles break loose and begins to move like a liquid. Melting of iron is an example.
Boiling; is a phase change from liquid to gases. When substances reaches their boiling points when heat is supplied they begin to boil and form gases. An example is the boiling of water. Boiling usually occurs when the vapor pressure is equal to the atmospheric pressure around.
Condensing: is a phase change from gas to liquid. When gases are cooled they condense back to liquid. Example is rain clouds.
Freezing: is a phase change from liquid to solid.
