Answer:
15.64m/s
Explanation:
This is a unit of speed which is the rate of change of distance with time
I am driving at 35mph: and I want to express as m/s
mph means miles per hour
This suggests that I have to convert miles to m and hrs to secs:
for distance 1.609km = 1mi
1000m = 1km
for time:
1hr = 60minutes
1min = 60seconds
Using dimensional analysis:
x 
x 
x 
x 
= 15.64m/s
Hola!
We know,
1 Mole of anything has 6.02 ×
particles
According to Question,
6.02 ×
= 1 Mole
Thus,
1.8 ×
/ 6.02 ×
= 0.33 Moles
hope it helps!
Evaporation
Explanation:
From C to D, the phase changes from liquid to gas and it is called evaporation.
Evaporation is a phase change process in which liquid water is converted to gaseous vapor.
During evaporation, the liquid is heated till the particles gain sufficient energy that allows the molecules to escape. The reverse process in which gas is turned to liquid is called condensation.
Learn more:
Evaporation brainly.com/question/10972073
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A reaction is first order. If the initial reactant concentration is 0.0200 M, and 25.0 days later the concentration is 6.25 x 10-4 M, then its half-life is:
Answer:
D
Explanation:
The inner core (which is solid) is the hottest layer of the earth. It, therefore, contributes to heating up the outer core. The outer core is liquid and rotation of the earth (Coriolis effect) causes the molten rocks to swirl like a tornado. Because the outer core is mostly made of metals, that have lost electrons and hence charged (due to the enormous heat), the swilring effect causing an electric effect. This consequently causes the dynamo effect that creates a magnetic field. This magnetic field covers the earth and protects it from harmful radiation from the solar storms.
