The sentences below describe four Earth events. 1. Elevators and escalators start moving faster.
2. Weather satellites stop sending signals to Earth.
3. GPS tracking systems stop functioning temporarily.
4. Space debris enters into Earth's atmosphere.
Which of these events is most likely to happen on Earth
during a solar maximum? (1 point)

"standard molar enthalpy:

h2o ( liquid water ) : - 285.8 kj/mole

h2o ( water vapor ) : - 241.8 kj / mole.

δhrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0

answer: 44.0 kj"

i think it is true since you can test the answer and can use observations to complete it.

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3

the cold front replaces the warmer air at the ground level changing the wind to be breezy and denser.there is also an immediate drop in the temperature.