Answer:
Sea floor spreading
Explanation:
In case of a divergent plate motion, two plates move away from another. Due to this motion, there occurs separation of the seafloor, resulting in the addition of new materials to the crust along the mid oceanic ridge. This mid oceanic ridge marks the boundary of separation of the oceanic plates. It often generates deep focus earthquakes and forms volcanoes or chains of volcanic arcs.
Thus, the separation of the two plates under water causes seafloor spreading, and the magma fills the space along the mid oceanic ridge.
(2) HNO3 and NaCl
(3) NH3 and H2CO3
(4) HBr and H2SO4
Answer:The correct answer is option 4.
Explanation:
Arrhenius acids are those compounds which gives ions when dissolved in their aqueous solution.
Arrhenius bases are those compounds which gives ions when dissolved in their aqueous solution.
are Arrhenius acids because they form ions in their respective aqueous solution.
Hence, the correct answer is option 4.
Answer: 14.7 L of oxygen gas at 25 degrees celsius and 1.04 atm is needed for the complete combustion of 5.53g of propane
Explanation:
According to avogadro's law, 1 mole of every substance occupies 22.4 L at NTP, weighs equal to the molecular mass and contains avogadro's number of particles.
According to stoichiometry :
1 mole of propane requires 5 moles of oxygen
Thus 0.125 moles of propane require= moles of oxygen
According to the ideal gas equation:'
P = Pressure of the gas = 1.04 atm
V= Volume of the gas = ?
T= Temperature of the gas = 25°C = 298 K
R= Gas constant = 0.0821 atmL/K mol
n= moles of gas= 0.625
To find the volume of oxygen gas needed for the complete combustion of propane at given conditions, use stoichiometric calculations based on the balanced chemical equation and apply the ideal gas law.
The question is asking for the volume of oxygen gas required for the complete combustion of a given amount of propane at a specified temperature and pressure. To solve this, stoichiometry must be used along with the ideal gas law. The balanced chemical equation for the combustion of propane (C3H8) is:
C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(l)
This equation indicates that one mole of propane reacts with five moles of oxygen. First, calculate the moles of propane by dividing the given mass of propane by its molar mass. Then, use the stoichiometric relationship from the balanced equation to find the moles of oxygen needed. Finally, apply the ideal gas law (PV=nRT) to calculate the required volume of oxygen at the given conditions (remembering to convert temperature to Kelvin and pressure to atm if necessary).
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Answer:
The Team B is winning. The force is unbalanced.
Explanation:
Step 1: First we must fix a positive sense to the forces exerted. We take as positive the force of 4900 N.
Step 2: Now we must add forces to determine the value of the resulting force ().
= 4900 N - 4000 N = 900 N
Since is positive, team B will win the competition.
The resulting force is unbalanced because if it is balanced it should give 0.
Have a nice day!
In the tug-of-war competition, team B is winning because it is exerting a stronger force. The net force is 900N to the left, showing an unbalanced force scenario, which will cause a change in motion or acceleration of the teams towards team B.
Let's visualize this tug-of-war contest as a simple force diagram. To the right, we have team A exerting a force of 4000N, and to the left, we have team B exerting a stronger force of 4900N. In terms of net force, this means we subtract the smaller force (team A's force) from the larger one (team B's force), giving us a net force of 900N in the direction of the stronger force—in this case, to the left, following team B.
This situation represents an unbalanced force scenario because the two forces are not equal in magnitude and do not cancel each other out. As a result, there is a net force leading to an acceleration—according to Newton's Second Law of Motion, any unbalanced force will cause a change in motion or acceleration. So, in this scenario, team B will be winning.
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