When a nucleus emits a positron, its atomic number
A) increases by 1.
B) decreases by 1.
C) doesn't change.
Answer: B
You might also like to view...
If 1.00 mol of oxygen is heated at constant pressure of 1.00 atm from
to 
From the first law, calculate the change of internal energy of the gas in this process.
A. 312 J B. 291 J C. 365 J D. 155 J
When we see a meteor shower, it means that
A) Earth is crossing the orbit of a comet. B) the solar wind is unusually strong. C) an Earth-approaching asteroid has recently come close to our planet. D) you should duck and run for cover to avoid being blasted on the head by a rock from space.
The surgical technique to prevent a male or female from having the ability to produce offspring is known as __________
Fill in the blank(s) with the appropriate word.
Earth's average density is about _____
A) 5.5 g/cm3 B) 6.5 g/cm3 C) 7.5 g/cm3 D) 8.5 g/cm3