Answer:
12.8seconds, 14.6seconds, 16.4seconds
Explanation:
the answers should b right as long as it is increasing in trend.
the reason why is bc of lower vol of hcl, and higher vol of water present. there is amount of hcl molecules present per volume. lesser chance of collisions, lower rate of successful collisions to poduce CO2
<u>22.5 grams H2O</u> are formed when 13.5 grams of methane (ch4) burns in 40.0 grams of oxygen.
<h3>
What is methane?</h3>
Methane, colourless, odourless gas that occurs abundantly in nature and as a product of certain human activities. Methane is the simplest member of the paraffin series of hydrocarbons and is among the most potent of the greenhouse gases. Its chemical formula is CH4.
<h3>
Where do methane emissions come from?</h3>
According to the EPA, globally, 50 to 65% of total methane emissions come from the following human-caused activities:
- Leaks from natural gas systems
- Landfills and waste from homes and businesses
Learn more about Methane
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You have to find how many moles of H2 has formed.
C+ H2O -> CO + H2
mole of carbon reacted = mass / molar mass = 34g/ 12g per mol = 2.83 mol
for every 1 mole of carbon will form 1 mole of H2
mole of hydrogen produced = 1* 2.83 = 2.83 mol
mass of hydrogen = mole * molar mass = 2.83 mol * (1*2) = 5.66g
Im not so sure about that, but aspirin is an acetylsalicylic acid