Why fire rekindle days later as someone tries remove residue
When relatively small amounts of magnesium burn, the fires are extinguished using commercially available dry powder. Why might this fire rekindle days later as someone tries to remove the residue with water? What chemical process is involved here?
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An electron and a photon travling in a vacuum have the same value for energy, but the wavelength of the photon is 100 times the wavelength of the electron. What is the value of their common energy and calculate the value of the wavelength of e
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A solution is made up by dissolving 73 g of glucose in 966 g of water. Calculate the activity coefficient of glucose in this solution if the solution freezes at -.66 degrees C.
When strongly heated, magnesium sulfide formed a crystalline deposit on the walls of a sealed reaction vessel. Metallic deposits were found on the bottom of the container. what is the equation and the type of reaction?
Why might this fire rekindle days later as someone tries to remove the residue with water? What chemical process is involved here?
The compound KB5O8·X H2O was analyzed and found to contain 24.6% of water. If the formula weight of this compound is 293.15 g/mol, what is the number of water molecules (X) in the formula?
A tank at is filled with of carbon dioxide gas and of carbon monoxide gas. You can assume both gases behave as ideal gases under these conditions.
A 20 mL solution of Ti2+ (40 mM) can be oxidized by reacting with iron ions from FeCl3. A titration is performed with a saturated calomel reference electrode (S.C.E.) as the anode and a platinum wire as a cathode. Determine the cell potential at v
Two blocks A and B are arranged with pulleys as shown. Block A has an initial velocity (t = 0s) to the left of vA=1.2 m/s. Block B has a constant acceleration of aB=0.40 m/s2 downwards.
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