Chemistry, 04.12.2020 04:30 nathaniel12
Which of these chemical equations is already balanced?
Select one:
a. Mg + O2 --> MgO
b. Na + H2O > NaOH + H2
c. CaCO3 --> CaO + CO2
d. Na + Cl2 ---> NaCl
Answers: 3
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Answers: 1
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The chemical equation below shows the reaction of sodium (na) and chlorine (cl) to form sodium chloride (nacl). 2na + cl2 → 2nacl in this equation, which of the following is a reactant? i. sodium ii. chlorine iii. sodium chloride
Answers: 1
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Asample of hydrated tin (ii) chloride (sncl2) has a mass of 4.90 g. when it is dehydrated, it has a mass of 4.10 g. which is the correct chemical formula for the hydrate? sncl2•2h2o sncl2•4h2o sncl2•6h2o
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What is the area in square meters of 448 g ai foil that has a thickness of 23921 nm? the density is 2.70 g/cm
Answers: 3
Which of these chemical equations is already balanced?
Select one:
a. Mg + O2 --> MgO <...
a. Mg + O2 --> MgO <...
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