Answer:change in number of atoms
Explanation:AP3X
Answer is: first order reaction.
First-order reaction<span> is a </span>reaction (unimolecular reaction)<span> that rate depends linearly on only one </span>reactant concentration (in this case A). <span> First order reaction give graph with a negative and linear slope.</span>
k - rate constant<span>, found through experiment.
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Using Phosphoric acid will work perfectly for producing Hydrogen halides because its not an Oxidizing agent. ...
Using an ionic chloride and Phosphoric acid
H3PO4 + NaCl ==> HCl + NaH2PO4
H3PO4 + NaI ==> HI + NaH2PO4
H2SO4 + NaCl ==> HCl + NaHSO4
This method(Using H2So4) will work for all hydrogen hydrogen halide except Hydrogen Iodide and Hydrogen Bromide.
The Sulphuric acid won't be useful for producing Hydrogen Iodide because its an OXIDIZING AGENT. Whist producing the Hydrogen Iodide... Some of the Iodide ions are oxidized to Iodine.
2I-² === I2 + 2e-
Answer:
B. A worker should not feel air moving around the chemical hood.
Explanation:
Hello!
In this case, since chemical hoods are used to remove the hazardous vapors given off by volatile chemicals, the idea is that the workers do not get in contact, in anyway, with those vapors as they can affect their health and safety at the laboratories.
It means that options A and C are ruled out because they describe an scenario in which the worker is in contact with the vapors and also because the vapors are removed via a fan system that withdraws the vapors.
Therefore the correct option is B. A worker should not feel air moving around the chemical hood.
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