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Which is kept in kerosene?
Which is kept in kerosene? Sodium Can sodium and potassium be stored in water? Explanation: Sodium and potassium metals reacts very vigorously with water; this reaction gives out so much heat that the hydrogen evolved catches fire. Therefore, these metals are stored under kerosene. What happens when you mix potassium and sodium? Sodium reacts more […]
What is the change in internal energy for a system that does 70j?
What is the change in internal energy for a system that does 70j? Answer. According to First Law of Thermodynamics, ⇒ Internal energy (ΔU)= q+W = (-45)+70 = -25 J. What is the change in internal energy U for a system? One way we can increase the internal energy U (and therefore the temperature) of […]
How can we identify a particular element?
How can we identify a particular element? Explanation: There are two properties that can be used to identify an element: the atomic number or the number of protons in an atom. The number of neutrons and number of electrons are frequently equal to the number of protons, but can vary depending on the atom in […]
How much does a 8 foot 2×2 weigh?
How many days are in a month without weekends?
What are the three factors that contribute to the resting membrane potential?
What are the three factors that contribute to the resting membrane potential? Membrane potentials in cells are determined primarily by three factors: 1) the concentration of ions on the inside and outside of the cell; 2) the permeability of the cell membrane to those ions (i.e., ion conductance) through specific ion channels; and 3) by […]
Can copper become an electromagnet?
Can copper become an electromagnet? An electromagnet is a magnet that works with electricity. It can be switched on and off. The coils are nearly always made of copper wire because copper is such an excellent electrical conductor. Does copper contain electricity? Copper has the best electrical conductivity of any metal, except silver. A good […]
What is the advantage of pressure give three examples?
What is the advantage of pressure give three examples? it saves time . it makes us focus . preservers our interest . this are the three advantages of pressure . What is relation between pressure force and area? Pressure is a measure of how much force is acting upon an area. Pressure can be found […]