Answer:
Cd²⁺(aq) + 2 e⁻ → Cd(s)
Mg(s) → Mg²⁺(aq) + 2 e⁻
Cd²⁺(aq) + Mg(s) → Cd(s) + Mg²⁺(aq)
Explanation:
A voltaic cell is composed of two half-reactions:
Reduction (cathode): Cd²⁺(aq) + 2 e⁻ → Cd(s)
Oxidation (anode): Mg(s) → Mg²⁺(aq) + 2 e⁻
Cd²⁺ reduces to Cd (the oxidation number decreases from 2 to 0), whereas Mg oxidizes to Mg²⁺ (the oxidation number increases from 0 to 2). We can get the overall cell reaction by adding both half-reactions:
Cd²⁺(aq) + 2 e⁻ + Mg(s) → Cd(s) + Mg²⁺(aq) + 2 e⁻
Cd²⁺(aq) + Mg(s) → Cd(s) + Mg²⁺(aq)
Answer:
KCI+AgC2H3O2
Explanation:
Answer:
As we can see, the first shell has its 2 electrons
the second shell has its 8 electrons
we know that the third shell also needs 8 electrons and we can see that the third shell also has 8 electrons.
Therefore, all the shells of this atom are filled and this atom is stable
So we can say that there are no unpaired electrons
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Answer:
No unpaired electrons
Explanation:
This is because it is diamagnetic. Hope that helps:)
(b) Analysis of the nitrate content of soil near a local water source. soil nitrate
(c) Measurement of the citric acid found in a lime.
Identify the following as either sample or analyte.
(1) lead
(2) paint chips
(3) soil
(4) nitrate
(5) lime wedge
(6) citric acid
Answer:
a) Analyte: lead. Sample: paint.
b) Analyte: nitrate. Sample: soil.
c) Analyte: citric acid. Sample: Lime
1) Lead: Analyte.
2) Paint chips: Sample.
3) Soil: Sample.
4) Nitrate: Analyte.
5) Lime wedge: Sample.
6) Citric acid: Analyte.
Explanation:
A sample is a portion of material selected from a larger quantity of material while an analyte is the chemical of the system that will be analysed.
Thus:
a) Analyte is lead while you must take a sample of paint to analyze this lead.
b) Analyte is the nitrate while sample must be soil.
c) Analyte is citric acid and lime is the sample
1) Lead: Analyte.
2) Paint chips: Sample.
3) Soil: Sample.
4) Nitrate: Analyte.
5) Lime wedge: Sample.
6) Citric acid: Analyte.
Answer:
A high wave caused by either an earthquake, submarine landslide, or other disturbance that occurs.
Explanation:
Answer:
a Big Big wave
Explanation:
A tsunami is a Big Big wave
Answer:
6.1 kg
Explanation:
To obtain the total mass of the sample, we must first express each mass of the sample in the same unit of measurement.
Since the SI unit of mass is kilogram (kg), we shall express the total mass of the samples in kilogram (kg).
This is illustrated below:
Mass of the samples are:
M1 = 0.6160959 kg
M2 = 3.225 mg
M3 = 5480.7 g.
Conversion of 3.225 mg to kg
1 mg = 1×10¯⁶ kg
Therefore,
3.225 mg = 3.225 × 1×10¯⁶
3.225 mg = 3.225×10¯⁶ kg
Conversion of 5480.7 g to kg
1000 g = 1 kg
Therefore,
5480.7 g = 5480.7 /1000
5480.7 g = 5.4807 kg
Thus, we can obtain the total mass of the samples as follow:
M1 = 0.6160959 kg
M2 = 3.225×10¯⁶ kg
M3 = 5.4807 kg
Total mass =?
Total mass = M1 + M2 + M3
Total mass = 0.6160959 + 3.225×10¯⁶ + 5.4807
Total mass = 6.096799125 ≈ 6.1 kg
Therefore, the total mass of the samples is approximately 6.1 kg.