- What is call math & number, give the example of math & number?

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Give five ways of increasing the rate of the following reaction: H2(g)+Br2(g) -> 2HBr(g)? Help me solve this problem (x^2+4x-21)/2? A sample of 0.300 moles of nitrogen occupies 0.600 L. Under the same conditions, what amount of moles occupies 1.200 L? Whatâ€™s a good place to live that has amazing views (city and tall buildings), cold weather, not very expensive? What are the technological uses of Uranium-234?