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Round the following number to four significant figures and express the result in standard exponential notation: 25.6623 × 10^5
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What mass of natural gas (ch4) must you burn to emit 276 kj of heat?
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How much heat is added if 0.814g of water increase in temperature by 0.351 degree c?
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Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?
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Round the following number to four significant figures and express the result in standard exponentia...
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