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Chemistry, 22.06.2019 03:00
Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture
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Chemistry, 22.06.2019 14:00
What mass of natural gas (ch4) must you burn to emit 276 kj of heat?
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Chemistry, 23.06.2019 06:50
What is the volume of 3.2 moles of chlorine gas (cl2) at 295 k and 1.1 atm?
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The pressure in a car tire is 198 kPa at 27°C. After a long drive, the pressure is 225 kPa. What is...
Mathematics, 01.12.2020 16:50
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