FALSE
Organisms may play only one role in an ecosystem. ... Each of the organisms in an ecosystem fills the energy role of producer, consumer, or decomposer.
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Answer:
<u>C) 4</u>
Explanation:
<u>The reaction</u> :
- C (s) + 2H₂ (g) ⇒ CH₄ (g)
12g 4g 16g
Hence, based on this we can say that : <u>2 moles of hydrogen gas are needed to produce 16g of methane.</u>
<u />
<u>For 32g of methane</u>
- Number of moles of H₂ = 32/16 × 2
- Number of moles of H₂ = <u>4</u>
Largest
K
Ca
Ga
Ge
As
Br
Kr
Smallest
How Earthquakes affect buildings
Answer:
642.8g
Explanation:
NaCl has a molar mass of 58.44g/mol, which means one mole of NaCl has a mass of 58.44g.
11 moles of NaCl will have a mass of 642.8g.
11 mol NaCl x 58.44g = 642.8g
