The speed of a chemical reaction is affected by four factors: enzymes, concentration, temperature, particle size, and the presence of a suitable catalyst.
Answer:C) Sticking the balloon in a freezer.
Explanation:
Sticking the balloon in a freezer will cause the pressure to drop because the air inside will become colder and lead to the particles having lower kinetic energies. In, turn their rate of collisions will decrease and cause the pressure to drop. Leaving the balloon in a hot car and squeezing the balloon will cause a pressure increase and taking the balloon to the top of a hill may or may not cause a pressure increase.
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Excessive ventilation is harmful because it increases intrathoracic pressure, decreasing venous flow and causing problems in the conduction of heartbeats, since it changes the respiratory pattern. In addition, it can cause occasional problems such as reflux and regurgitation.
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Answer:
The edge length of the empty space between atoms that reside along [100] directions in a BCC crystal of Cs metal is 0.612 nanometers
Explanation:
For Body centered cubic structure (BCC) crystal in direction [100], the edge length of unit cell is calculated with the formula below;
X =
Where;
X is the edge length of the empty space between atoms
R is the radius of the cesium atom = 0.265 nanometers
X = (4*0.265)/(√3)
X = 0.612 nanometers
Therefore, the edge length of the empty space between atoms that reside along [100] directions in a BCC crystal of Cs metal is 0.612 nanometers
I think that’s false because since it’s going slower, the friction might decrease.