Chemistry, 03.03.2021 02:40 chawnholliday8673
The rock in a particular iron ore deposit contains 78% Fe2O3 by mass. How many kilograms of the rock must a mining company process to obtain 1.0 x 103 kg of iron?
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Electric charge is what ? a. kinetic energy b. radiation c. discovery d. electricity
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An alloy contains 66 g of pure zinc. what is the percentage of zinc in the alloy? express your answer to two significant figures and include the appropriate units.
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Which of the following is a conclusion that resulted from ernest rutherford’s scattering experiment? (will mark brainliest) a. the nucleus is negatively charged b. the atom is a dense solid and is indivisible c. the mass is conserved when atoms react chemically d. the nucleus is very small and the atom is mostly empty space
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The rock in a particular iron ore deposit contains 78% Fe2O3 by mass. How many kilograms of the rock...
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