Answer:
The combustion of 59.7 grams of methane releases 3320.81 kilojoules of energy
Explanation:
Given;
CH₄ + 2O₂ → CO₂ + 2H₂O, ΔH = -890 kJ/mol
From the combustion reaction above, it can be observed that;
1 mole of methane (CH₄) released 890 kilojoules of energy.
Now, we convert 59.7 grams of methane to moles
CH₄ = 12 + (1x4) = 16 g/mol
59.7 g of CH₄ 
1 mole of methane (CH₄) released 890 kilojoules of energy
3.73125 moles of methane (CH₄) will release ?
= 3.73125 moles x -890 kJ/mol
= -3320.81 kJ
Therefore, the combustion of 59.7 grams of methane releases 3320.81 kilojoules of energy
Answer:
Chemical reaction are irreversible. Some of the example of chemical reaction are cooking, rusting, and burning. During a chemical reaction, the composition of substances changes and the particles rearrange to form a new substance. The new substance formed after chemical reaction of substance has different physical and chemical properties.
When a chemical reaction occur, the atoms or molecules of the substances change its physical and chemical properties such as while cooking of vegetable, the molecules of vegetable undergo changes in their properties and form a new substance which is different from the earlier.
Answer:
D. severe weather events would occur more often
Explanation:
If the average global temperatures on Earth increased, there are high chances of severe weather events occurring more often
- Weather events are devastating in nature.
- Examples are hail, blizzards, Lightning and thunderstorm
Increase in average global temperatures can result in these disasters.
When global temperatures increases, polar ice will melt and sea levels will increase.
This will cause storms in coastal areas and flooding.
Answer:
46.784886 amu is the average atomic mass of titanium on that planet.
Explanation:
Fractional abundance of Ti-46 =72.000% = 0.72000
Atomic mass of Ti-46 = 45.95263 amu
Fractional abundance of Ti-48 =14.300% = 0.14300
Atomic mass of Ti-48 = 47.94795 amu
Fractional abundance of Ti-50 =13.700% = 0.13700
Atomic mass of Ti-50 = 49.94479 amu
Average atomic mass of titanium atom:
46.784886 amu is the average atomic mass of titanium on that planet.
