Answer:75
Explanation:Hello Bella, how are you today? Looking for my answer I see. Good luck, and next time don't use your real name.
B- 90 grams bc 45 mL times 2 equals 90
Answer:
1. Atmosphere ⇒ Ocean ⇒ Marine Plants ⇒ Sediments ⇒ Natural Gas
.
2. Atmosphere ⇒ Land Plants ⇒ Natural Gas.
Explanation:
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In this case, it is widely known there are two ways in which natural gas is formed:
1. Atmosphere ⇒ Ocean ⇒ Marine Plants ⇒ Sediments ⇒ Natural Gas
.
In this one, the carbon dioxide in the atmosphere, is able to get through the ocean and in touch with marine plants which have the capacity to undergo photosynthesis and yield sugars which are subsequently fixated in the soil as sediments containing fossil fuels, coal and/or natural gas.
2. Atmosphere ⇒ Land Plants ⇒ Natural Gas.
In this one, the carbon dioxido also in the atmosphere is captured by the land plants which use it to undergo photosynthesis and subsequently fix it into the underground as fossil fuels, coal and/or natural gas as well.
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Considering the definition of percentage by mass, the mass percentage of CaCO₃ is 68.59%.
<h3>What is mass percentage</h3>
The percentage by mass expresses the concentration and indicates the amount of mass of solute present in 100 grams of solution.
In other words, the percentage by mass of a component of the solution is defined as the ratio of the mass of the solute to the mass of the solution, expressed as a percentage.
The percentage by mass is calculated as the mass of the solute divided by the mass of the solution, the result of which is multiplied by 100 to give a percentage. This is:
<h3>Mass percentage of CaCO₃</h3>
In this case, you know:
- mass of CaCO₃: 2.62 grams
- mass of limestone: 3.82 grams
Replacing in the definition of mass percentage:
<u><em>mass percentage= 68.59 %</em></u>
Finally, the mass percentage of CaCO₃ is 68.59%.
Learn more about percentage by mass:
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