Answer:
The answer is D
Explanation:
All of these solutions are correct.
Explanation:
Before proceeding, let's understand what thermosphere and mesosphere are;
The mesosphere is the third layer of the atmosphere, directly above the stratosphere and directly below the thermosphere.
The thermosphere is the layer in the Earth's atmosphere directly above the mesosphere and below the exosphere.
The meteors make it through the exosphere and thermosphere without much trouble because those layers don't have much air. But when they hit the mesosphere, there are enough gases to cause friction and create heat.
Temperatures in the mesosphere decrease with altitude. Because there are few gas molecules in the mesosphere to absorb the Sun's radiation, the
heat source is the stratosphere below. The mesosphere is extremely cold.
Satellites and the International Space Station orbit the Earth within the thermosphere.
Mesosphere;
- is directly above the stratosphere
- acts as a barrier to meteoroids
- is very cold
Thermosphere;
- reaches out into space
- is where satellites travel
Answer:
Output voltage = 600 V
Explanation:
Using the transformer equation which simply states that the ratio of the secondary to primary voltages in a transformer equals the ratio of the number of loops in their coils.
Number of input turns/Number of output turns = Voltage of input/voltage of output
10/50 = 120V/voltage of output
Voltage of output = 120 V/0.2
Voltage of output = 600 V
Answer:
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Answer:
The mass of zinc sulfide produced is 
Explanation:
From the question we are told that
The mass of zinc is 
The mass of sulfur is 
The molar mass of 
is a constant with value 65.39 g /mol
The molar mass of 
is a constant with value 32.01 g/mol
The molar mass of 
is a constant with value 97.46 g/mol
The reaction is
So from the reaction
1 mole of react with 1 mole of to produce 1 mole of
This implies that
65.39 g /mol of react with 32.01 g/mol of to produce 97.46 g/mol of
From the values given we can deduce that the limiting reactant is sulfur cause of the smaller mass
So
0.250 g of react with 0.250 of to produce 
of
So
Thus the mass of the mass of zinc sulfide produced is
