Chemistry, 10.12.2020 21:10 potato1458
1. Tin (II) Chloride is mixed with Manganese metal, as shown below. Which of the following compounds will exist afterwards?
SnCl2 + Mn --> ?
Select one or more:
a. SnCl2
b. MnCl2
c. SnCl and MnCl
d. SnMn
e. Cl2
2.What is the oxidation number for Cobalt in the following compound?
CoSO4
Select one or more:
a. 0
b. 1
c. 2
d. 3
e. 4
3. Which of the following compounds will exist after Nickel (II) Oxide is mixed with Calcium as shown below?
NiO + Ca --> ?
Select one or more:
a. O2
b. CaO
c. NiCa
d. CaO2
4. In the following reaction, which element is being reduced?
C2H2 + O2 --> H20 + CO2
Select one or more:
a. O
b. H
c. C
d. C and H
5. When the following two aqueous solutions are mixed, what will happen?
Na3PO4 (aq) + Al(NO3)3 (aq) -->
Select one or more:
a. AlPO4 will appear as a precipitate.
b. PO4NO3 will appear as a precipitate.
c. AlNa3 will appear as a precipitate.
d. NaNO3 will appear as a precipitate.
e. No reaction. The ions will remain dissolved in water.
6. When these aqueous solutions are mixed, which of the following will happen?
AgNO3 (aq) + KI (aq) -->
Select one or more:
a. No reaction. The ions remain in an aqueous state.
b. KNO3
c. INO3
d. AgK
e. AgI
Answers: 3
Chemistry, 21.06.2019 17:10
Abullet found at a crime scene may be used as evidence in a trial if the percentage of metals match to the composition of metals in a bullet from the suspect's ammunition. a forensic scientist's analysis of the bullet shows that it contains 11.9 g of lead, 0.5 g of tin, and 0.8 b of antimony. what is the percentage of lead metal in the bullet? express your answers to the one's place.
Answers: 2
Chemistry, 22.06.2019 11:00
The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.
Answers: 2
Chemistry, 22.06.2019 20:30
Calculate the percent composition by mass of each element in al(oh)3. use at least three significant figures.
Answers: 1
1. Tin (II) Chloride is mixed with Manganese metal, as shown below. Which of the following compounds...
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