False, because generally forensics collect the evidence to make sure the evidence doesn’t get damaged or tainted.... hope this helps
at the nuclear reactor site
Explanation:
Most high-level wastes in the United States have been stored at the nuclear reactor site.
High-level wastes are radioactive wastes from nuclear activities in a reactor.
- They are mostly made up of spent rods and other radioactive materials.
- It is impossible to stop these materials from radiating.
- Radiations are toxic to life on earth.
- No known method has been properly designed to efficiently store nuclear waste.
- They are usually buried in large and dark underground storage facilities where they remain for several years
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2Al + 6H₂O ⇒ 2Al(OH)₃ + 3H₂
2mol : 2V
54g : 67,2L
268,5g : Vₓ
vₓ = 67,2dm³*268,5g / 54g ≈ 334,13L
Answer:
saturated solution because it can only dissolve upto fixed temperature
Answer:
Blank #1: Polyatomic
Blank #2: 2 (see explanation)
Blank #3: 1 (see explanation)
Explanation
Both the ammonium ion and the sulfate ion contain more than one atom in each ion. The two species are thus polyatomic. The chloride ion , for example, is monoatomic.
Superscripts above formulae of the ions indicate their charge. Each ammonium ion carries a positive one (+1) charge. Each sulfate ion carries a charge of negative two (-2).
Ammonium sulfate is an ionic compound. A sample of this compound contain myriads of ammonium ions and sulfate ions. The ions are packed in three-dimensional lattices. Thus unlike water, ammonium sulfate does not exist as molecules in nature.
Assuming that the second and third blanks refers to a formula unit, rather than a molecule, of ammonium sulfate. The empirical formula of ammonium sulfate gives the minimum whole-number ratio between the two ions in a sample.
Charges shall balance between the two ions. Ammonium ions are of charge +1. Sulfate ions are of charge -2. The sample shall thus contain two ammonium ions for every one sulfate ion.
The empirical formula of ammonium sulfate is therefore .
There are thus two ammonium ions and one sulfate ion in each formula unit of ammonium sulfate.