Answer:
0.665 moles of CO₂
Explanation:
The balance chemical equation for the combustion of Ethane is as follow:
2 C₂H₆ + 7 O₂ → 4 CO₂ + 6 H₂O
Step 1: <u>Calculate moles of C₂H₆ as;</u>
Moles = Mass / M.Mass
Putting values,
Moles = 10.0 g / 30.07 g/mol
Moles = 0.3325 moles
Step 2: <u>Calculate Moles of CO₂ as;</u>
According to balance chemical equation,
2 moles of C₂H₆ produced = 4 moles of CO₂
So,
0.3325 moles of C₂H₆ will produce = X moles of CO₂
Solving for X,
X = 0.3325 mol × 4 mol ÷ 2 mol
X = 0.665 moles of CO₂
A hydrologist should analyze the water for contamination
Answer:
B.) cement
Explanation:
The commonest types of impression evidence found in crime scenes include footprints, tire tracks, bite marks and tool marks etc.These types of impression evidence can be used by crime scene investigators to link the suspects to the crime.
The impressions are usually cast using gypsum cement and other forms of casting tools to preserve the evidence and make it useful during any period in the course of the investigation.
Answer:
Explanation:
Nuclear fusion of a form of nuclear reaction in which two small atomic nuclei combines to form larger ones with the release of a large amount of energy.
For example;
²₁H + ²₁H → ⁴₂He + Energy
The energy released in a nuclear reaction provides the needed temperature for another set of ²H atoms to fuse. This process in turn yields another ⁴He with the release of a lot of energy. Thus, enormous release of energy accompanies a nuclear reaction.
It is based on this principle that an hydrogen bomb is formed.
