PLEASE HELP I'VE DONE MOST OF THEM BUT THESE I DONT GET ( 30 POINTS)!!!
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, 22.06.2019 12:50, martinez6221
What is the chemical name of the compound na2co3? use the list of polyatomic ions and the periodic table to you answer. a. sodium carbon oxide b. sodium carbonate c. sodium(ll) carbonate d. sodium oxalate
Answers: 1
Chemistry, 22.06.2019 16:00, winnie45
He table below gives the atomic mass and relative abundance values for the three isotopes of element m. relative abundance (%) atomic mass (amu) 78.99 23.9850 10.00 24.9858 11.01 25.9826 what is the average atomic mass (in amu) of element m? 2.86 5.36 24.30 24.98
Answers: 2
Chemistry, 23.06.2019 00:30, tateandvioletAHS14AY
How many moles of co2 are produced during the complete combustion of 3.6 moles of c2h6
Answers: 1
PLEASE HELP I'VE DONE MOST OF THEM BUT THESE I DONT GET ( 30 POINTS)!!!
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