What mass of phosphorus is needed
when 31g of phosphorus reacts with oxygen, 71g of oxide of phosphorus is the product. what mass of phosphorus is needed to produce 39g of this product?
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Compare the oxidation state of hydrogen in HCl with its oxidation state in NaH. Why are they different.
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A skateboarder shoots off a ramp with a velocity of m/s, directed at an angle of above the horizontal. The end of the ramp is m above the ground. Let the x axis be parallel to the ground, the +y direction be vertically upward, and take as the orig
Draw all structural isomers of C6H12O that are aldehydes and ketones
A solution contained KIO3 and excess KI. 25 cm3 of this solution were acidified and the liberated I2 required 26.8 cm3 of 0.1 M Na2S2O3 for complete recaction. Calculate the molarity of KIO3 in the solution.
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Oxygen make up 46.7% by mass of Earth's crust. How many grams of Oxygen are present if a sample of Earth's crust has a mass of 325 g?
After being accelerated to a speed of 1.23×105 m/s, the particle enters a uniform magnetic field of strength 1.00 T and travels in a circle of radius 33.0 cm (determined by observing where it hits the screen as shown in the figure). The resu
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