Answer:
Electron gain enthalpy becomes more and more negative from left to right in a period. As we move across a period from left to right the atomic size decreases and the nuclear charge increases
<span>Pb(NO3)2(aq) + K2SO4(aq) → PbSO4(s) + 2 KNO3(aq) is </span>
Explanation:
1)
a) Wavelength of red light = 700 nm
1 nanometer = 
Wavelength of red light in meter will be:

b) Wavelength of red light = 
1 meter = 39.3701 inches
Wavelength of red light in inches will be:


2)
Value of distance given = 90.123 km
1 km = 3280.84 feet

1 foot = 0.1515152 chain


Value of distance in chains:

Assuming the person has about 154 pounds (70kg) the weight of an average human. There would be around 7000000000000000000000000000 atoms
or 7 x 10^27
Answer:
1. Land 2. open 3. broken 4. Lava matter 5. Force of the plates