Answer:
D) 2H₂O → 2H₂ + O₂
Explanation:
Decomposition means water molecules break up into hydrogen and oxygen molecules.
H₂O → H₂ + O₂
We need to balance the equation. There's one O atom on the left, and two O atoms on the right. Put a 2 in front of H₂O.
2H₂O → H₂ + O₂
Now there's 4 H atoms on the left, and 2 H atoms on the right. Put a 2 in front of H₂.
2H₂O → 2H₂ + O₂
The equation is balanced. There are 4 H atoms and 2 O atoms on either side.
The organ is called rectum.
Its other role is to absorb water into the body.
Answer:
r = 4.747 cm and h = 9.4925 cm
Explanation:
We know that volume of a cylinder is given as:
V = πr²h
Also, surface area is given as;
S = 2πr² + 2πrh
Where r is radius and h is height
Now, we are told that the volume is 672 cm³
Thus, πr²h = 672
Making h the subject gives;
h = 672/πr²
Putting 672/πr² for h in the surface area equation gives;
S = 2πr² + 2πr(672/πr²)
Factorizing gives;
S = 2π[r² + 672/πr]
Differentiating to get first derivative gives;
S' = 2π[2r - (672/πr²)]
Equating to zero gives;
2π[2r - (672/πr²)] = 0
4πr - 1344/r² = 0
4πr = 1344/r²
r³ = 1344/4π
r³ = 106.95212175775
r = ∛106.95212175775
r = 4.747 cm
So, since h = 672/πr²
Then, h = 672/π(4.747)²
h = 9.4925 cm
Answer:
An anode is an electrode through which conventional current (positive charge) flows into the device from the external circuit, while a cathode is an electrode through which conventional current flows out of the device.
Explanation:
1.8N
Explanation:
Given parameters:
Mass of the hockey puck = 0.15kg
Acceleration = 12m/s²
Unknown:
Net force = ?
Solution:
According newton's second law of motion "the net force on a body is the product of its mass and acceleration".
Force = mass x acceleration
Input the variables;
Net force = 0.15 x 12 = 1.8N
learn more:
Newton's law of motion brainly.com/question/11411375
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