Answer:
6.56 × 10²² atoms Xe
Explanation:
Step 1: Find conversions
Molar Mass Xe - 131.29 g/mol
Avagadro's Number: 6.022 × 10²³
Step 2: Use Dimensional Analysis
= 6.55911 × 10²² atoms Xe
Step 3: Simplify
We have 3 sig figs.
6.55911 × 10²² atoms Xe ≈ 6.56 × 10²² atoms Xe
Answer:
about 93 billion light years
Explanation:
The observable Universe is, of course, much larger. According to current thinking it is about 93 billion light years in diameter.
While there is no such thing as 100 percent safe, having nuclear energy is much safer than you think. It's thousands of times safer than conventional coal and other fossil-fuel-derived energy, not to mention the specter of environmental disaster from continued use of carbon-based energy sources.
the right one to this would be they have different masses and different charges as a proton has a mass that is less then that of a neutron and has a positive charge vs the is neutral charge of the neutron
