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riadik2000 [5.3K]
3 years ago
9

A light year measure the distance a lightbeam can travel in one year one light year is equivalent to 9500000000000 km why do sci

entist use light years to measure distances in the universe.
Light years are the only practical unit for measuring the distance of space

Light years tell us about the temperature distance and age of their celestial bodies

Light years are the most accurate form of measurement for universal purposes

Light years measure the age of celestial bodies by determining how bright the light is
Chemistry
1 answer:
Nina [5.8K]3 years ago
8 0

Answer:

Light years are the only practical unit for measuring the distance of space

Explanation:

Practical... aka logical.

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Answer:

A tritium is produced.

Explanation:

Combining two additional neutrons to the nucleus of the hydrogen atom makes it a tritium, Hydrogen-3.

   neutron is designated  ¹₀n; this shows a mass number of 1 and no atomic number

  Hydrogen-1 is designated as ₁¹H; a mass number of 1 and atomic number of 1. This particle is actually more like a proton.

        Combining both:

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This is a nuclear reaction and in balancing such reaction equation, mass numbers and atomic numbers must be conserved.

 

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2 years ago
If 1.27 moles of bromine gas (Br2) react with excess phosphorus (P), how many moles of phosphorus tribromide (PBr3) will be prod
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0.85 mole of PBr3.

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