3 years ago

Which is greater, the mass of the compounds before a chemical reaction or the mass of the compounds after a chemical reaction?

Physics

1 answer:

harkovskaia [24]3 years ago

7 0

The masses before and after are equal

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3 years ago

The total yearly world consumption of energy is approximately 4.0 Ã— 1020 J. How much mass would have to be completely converted

BabaBlast [244]

Answer:

m = 4.4 × 10³ kg

Explanation:

Given that:

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4.0 × 10²⁰ = m × (3 × 10⁸)²

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A source of sound is kept in a jar in a vacuum. Air is slowly introduced in to the jar. What happens to the sound coming out of

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