Chemistry, 23.12.2020 02:30 alliemeade1
What is the empirical formula for a compound composed of 47.9 g zinc and 52.1 g chlorine?
Answers: 3
Chemistry, 22.06.2019 15:30
Using the first volume and temperature reading on the table as v1 and t1, solve for the unknown values in the table below. remember to use the rules of significant figures when entering your numeric response.
Answers: 1
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Which elements are found in glucose, the product of photosynthesis? a. carbon, hydrogen, and oxygen b. carbon and hydrogen c. carbon, nitrogen, and oxygen d. hydrogen, nitrogen, and carbon
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Which fossil fuel is mainly used for heating and cooking? a. electricity b. coal c. petroleum d. natural gas
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Chemistry, 23.06.2019 13:30
The zinc within a copper-plated penny dissolves in hydrochloric acid if the copper coating is filed down in several spots (so that the hydrochloric acid can reach the zinc). the reaction between the acid and the zinc 2h+(aq)+zn(s)→h2(g)+zn2+(aq) . when the zinc in a certain penny dissolves, the total volume of gas collected over water at 25 °c is 0.947 l at a total pressure of 743 mmhg . (vapor pressure of water is 23.78 mmhg at 25 °c .) what mass of hydrogen gas is collected? answer in appropriate significant figures
Answers: 3
What is the empirical formula for a compound composed of 47.9 g zinc and 52.1 g chlorine?...
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