Author Question: For normal household temperatures, a comfortable relative humidity is a. 100 b. 0 c. 25 d. ... (Read 78 times)

newyorker26 · **on:** Jul 28, 2018

For normal household temperatures, a comfortable relative humidity is
a. 100
b. 0
c. 25
d. 50

Question 2

What happens to the atomic number (Z) and the mass number (A) when a nucleus emits a beta particle (electron)?
a. Z increases by 1; A is unchanged.
b. Z is unchanged; A is unchanged.
c. Z decreases by 2; A decreases by 4.
d. Z decreases by 1; A is unchanged.