<span>Tides do place a drag on the earth's rotation, but gradually. This energy lost from the earth's rotation is picked up by the moon's orbit around the earth. The moon is receding from the earth. So, in answering your question, the length of the day has been increasing. Without getting into the arduous math involved, in the very distant future the moon will have reached its max distance and the earth's rotation will be in step with the moon's orbit.</span>
Answer:
Option A) Exothermic Reaction
Explanation:
In exothermic reaction, the energy is released. The reactants are at high energy while the products are at low energy as shown in the graph.
Well, in an atom, there are an equal number of protons and electrons so they cancel each other out.
Answer:
V = 267.2 L
Explanation:
Given data:
Volume of balloon = ?
Mass of helium = 2.50 g
Temperature of gas = 180°C
Pressure = 0.87 atm
Solution:
Number of moles of helium:
Number of moles = mass/molar mass
Number of moles = 2.50 g/ 4 g/mol
Number of moles = 0.625 g
Volume of helium:
PV = nRT
R = general gas constant = 0.0821 atm.L/mol.K
0.87 atm× V = 0.625 mol × 0.0821 atm.L/mol.K×453 K
V = 232.45 atm.L /0.87 atm
V = 267.2 L