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hoa [83]
3 years ago
10

Answer this please t Lol

Chemistry
1 answer:
TEA [102]3 years ago
7 0

Answer: trial b

Explanation:

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Combustion of hydrocarbons such as undecane (_____) produces carbon dioxide, a "greenhouse gas." Greenhouse gases in the Earth's
____ [38]

Answer: Undecane, C11H24 is a liquid hydrocarbon from the alkane homologue ( family ).

Explanation:

All hydrocarbons burn in air to release H20 and CO2.

Combustion of hydrocarbons thus increases the percentage of CO2 present in the atmosphere which is not so good as CO2 is a greenhouse gas. Greenhouse gases produce the greenhouse effect. The green house effect is the warming effect produced when gases present in the atmosphere allow and retain the radiation from the sun to the earth. Examples of greenhouse gases are CO2, CH4, SO3, NO, CFCs. The greenhouse effect leads to an increase in the temperature of the earth subsequently leading to (I) melting of large amounts of ice at the poles causing flooding. (II) rapid evaporation of water from Earth’s surface. (III) decrease in crop yield.

Also, high concentration CFCs ( chlorofluorocarbons ), as widely used in aerosols, coolants and packaging foams, in the atmosphere depletes the ozone layer leading to global warming. In 1996 an international agreement was reached for a complete ban of CFCs and more countries are now going Green ( using alternative energy sources ) so as to minimize emissions of these greenhouse gases

5 0
4 years ago
3 students are working on an experiment about heat. They leave 4 objects in their
FrozenT [24]

Answer:

The glove and wooden block should stay close to the same temp and the metal and glass will be colder

Explanation:

3 0
3 years ago
Aluminum reacts with excess hydrochloric acid to form aqueous aluminum chloride and 190.6 ml of hydrogen gas (collected over wat
melamori03 [73]

Answer:

0.1296 grams of aluminum reacted

Explanation:

Equation of reaction:

2Al + 6HCl = 2AlCl3 + 3H2

From the ideal gas equation

PV = nRT

n = PV/RT

P = (25.2/760)atm + 0.89atm = 0.923 atm

V = 190.6 ml = 190.6cm^3

R = 82.057cm^3.atm/gmol.K

T = 26°C = 26+273K = 299K

n = 0.923×190.6/82.057×299 = 0.0072 moles of H2

From the equation of reaction

3 moles of hydrogen gas is formed from 2 moles of aluminum

Therefore, 0.0072 moles of hydrogen gas is formed from (0.0072×2/3 = 0.0048) moles of aluminum

Number of moles of aluminum that reacted = 0.0048 moles

Mass of aluminum that reacted = number of moles × MW = 0.0048 × 27 = 0.1296 grams

8 0
4 years ago
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What is the relationship between absorbance and transmittance of a sample in a spectrophotometer?
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I think Indirect, I’m so sorry if I’m wrong :(
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3 years ago
Trees, solar energy, and water are examples of:
lara31 [8.8K]
Trees are a renewable resource that can be used as an energy source.
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