Chemistry, 16.11.2019 04:31 idontknow113
If 40.0 g of hcl react with an excess of magnesium metal, what is the theoretical yield of hydrogen?
1.11 g
2.22 g
52.2 g
104 g
Answers: 1
Chemistry, 23.06.2019 01:00, MrTeriffic
Imagine if during the cathode ray experiment, the size of the particles of the ray was the same as the size of the atom forming the cathode. which other model or scientific observation would have also been supported? 1. this would support dalton's postulates that proposed the atoms are indivisible because no small particles are involved. 2. this would support bohr's prediction about electrons moving in orbits having specific energy. 3. this would support bohr's prediction about electrons being randomly scattered around the nucleus in the atom. 4. this would support dalton's postulates that proposed that atoms combine in fixed whole number ratios to form compounds.
Answers: 1
Chemistry, 23.06.2019 06:00, wirchakethan23
When hydrogen peroxide (h2o2) is added to potassium iodide (ki) solution, the hydrogen peroxide decomposes into water (h2o) and oxygen (o2). the chemical equation for the decomposition reaction is: 2h2o2—> 2h2o + o2. what is the role of the potassium iodide in this reaction? a. reactant. b. product. c. precipitate. d. catalyst.
Answers: 1
Chemistry, 23.06.2019 09:30, Nextlevel3
Where are the noble gases located in the periodic table? a. in the center b. on the left side c. in the upper right corner d. on the far right side
Answers: 1
If 40.0 g of hcl react with an excess of magnesium metal, what is the theoretical yield of hydrogen?...
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