Chemistry, 09.03.2021 18:30 gonzalesalexiaouv1bg
Which of the following reactions shows a chemical change producing a solid?
A. NaCl(s) → NaCl(aq)
B. 2CH2OH() + 302(g) → 2C02(g) + 4H20(1)
C. 2AgNO3(aq) + CaBr2(aq) + 2AgBr(s) + Ca(NO3)2(aq)
O D. H2(g) + O2(g) → H2O()
Answers: 3
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Which of the following is true for the actual yield of a reaction? it is always calculated as a ratio. it is the yield from the excess reactant. it is the yield from the limiting reactant. it is always less than the theoretical yield.
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Which statements are true concerning mineral formation? check all that apply. the slower the cooling, the larger the crystals. the faster the cooling, the smaller the crystals. crystals formed from magma are smaller than crystals formed from lava. minerals can only form in solutions when the solution is heated deep underground. when a solution cools, elements and compounds leave the solution and crystallize as minerals. minerals formed from hot water solutions can form narrow channels in the surrounding rock.
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Which of the following reactions shows a chemical change producing a solid?
A. NaCl(s) → NaCl(aq)
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