Explanation:
During this time, unusual winds cause warm surface water from the equator to move east, toward Central and South America. El Niño can
Answer: -112200J
Explanation:
The amount of heat (Q) released from an heated substance depends on its Mass (M), specific heat capacity (C) and change in temperature (Φ)
Thus, Q = MCΦ
Since,
Q = ?
Mass of water vapour = 30.0g
C = 187 J/ G°C
Φ = (Final temperature - Initial temperature)
= 100°C - 120°C = -20°C
Then apply the formula, Q = MCΦ
Q = 30.0g x 187 J/ G°C x -20°C
Q = -112200J (The negative sign does indicates that heat was released to the surroundings)
Thus, -112200 joules of heat is released when cooling the superheated vapour.
<u>Answer:</u> The correct answers are 
<u>Explanation:</u>
To find the polynomials which could represent the are of a square having side x greater than 2, we need to find the value of 'x' for all the given polynomials.
From the given options:
- 1.
x = -3 is ignored.
- 2.
x = -10 is ignored
- 3.
To solve this we use the quadratic formula:
Putting values of a, b and c, we get:
As, x comes out to be 2 and is not greater than 2. Hence, this is not considered.
- 4.
Solving for 'x' by splitting the middle term:
Hence, this is ignored.
- 5.
Solving for 'x' by splitting the middle term:
Hence, this is ignored.
So, the correct polynomials are
The reaction of hydrogen gas (H2) with oxygen gas (O2) is a COMBINATION or SYNTHESIS reaction, because multiple substances combine to form fewer substances. Here, the two gases form one substance, water (H2O):
2H2 + O2 -- > 2H2O
