Answer:
Explanation:
To convert from moles to mass, the molar mass must be used.
First, write the chemical formula for carbon monoxide. Since the carbon (C) comes first without a prefix, there is 1 carbon atom. The prefix mono- before oxide means 1, so there is also 1 oxygen (O) atom. The formula is CO.
Next, look up their molar masses on the Periodic Table.
- C: 12.011 g/mol
- O: 15.999 g/mol
Since there is 1 atom of each, the molar masses can be added.
- CO: 12.011 g/mol + 15.999 g/mol = 28.01 g/mol
Use this molar mass as a ratio.
Multiply by the given number of moles:5.55
The moles of carbon monoxide cancel.
Multiply.
The original measurement of moles has 3 significant figures, so our answer must have the same. For the number we calculated, it is the ones place. The 4 in the tenths place tells us to leave the 5.
5.55 moles of carbon monoxide is about 155 grams.
Answer:
The volume of 0.0256 gram of H₂s is =0.0178944 liter
Explanation:
Specific volume of H₂S is 0.699 m³/kg
The volume of 1000 gram of H₂s is 0.699 m³
Then the volume of 0.0256 gram of H₂s is =
= 0.000178944 m³
=0.000178944×1000 l
=0.0178944 liter
A double-edged stainless steel can float on water. Without surface tension, the blade would sink because its weight is greater than its buoyant surface.
Answer: The blade doesn't sink because of the surface tension of the water.
Ionization energy is the energy required to remove an
electron from an atom. Meanwhile, Electron affinity is the energy required to
add an electron to an atom. So we can see that the two are opposite variables.
However, they both refers to general attraction of an atom for “electron”.