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Tanya [424]
3 years ago
12

Soo Hwan found a flowering plant at school and used a classification key to help him classify the plant. The flowers of the plan

t are not clustered, and they have a deep brown center. What type of plant did Soo Hwan find?

Chemistry
1 answer:
KIM [24]3 years ago
8 0

Answer:

Black eyed susan

Explanation:

...

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To test the effectiveness of a gunpowder mixture, 1 gram was exploded under controlled STP conditions, and the reaction chamber
Alekssandra [29.7K]

Answer:

1.3 × 10³ cm³

Explanation:

The gas occupies a volume of V₁ = 310 cm³ under standard temperature and pressure (STP), that is, T₁ = 273.15 K and P₁ = 1.0 atm. In order to find the volume V₂ under different conditions we can use the combined gas law formula.

\frac{P_{1}.V_{1}}{T_{1}} =\frac{P_{2}.V_{2}}{T_{2}} \\V_{2}=\frac{P_{1}.V_{1}.T_{2}}{T_{1}.P_{2}}=\frac{1.0atm\times 310cm^{3} \times 2473K }{273.15K \times 2.1atm} =1.3 \times 10^{3} cm^{3}

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