Chemistry, 10.12.2020 07:10 nsaleh567

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

Show answers

Another question on Chemistry

Chemistry, 22.06.2019 08:30

Since the gas in your graduated cylinder is a mixture of butane and water vapor, you must determine the partial pressure of the butane, pbutane, alone. to do this, consult a reference and record the partial pressure of the water vapor, pwater, at the temperature you recorded. use the following formula to compute the partial pressure of the butane. pbutane = atmosphere - pwater use the following combined gas law formula and compute the volume that the butane sample will occupy at stp. (hint: convert both temperatures to kelvin.) pbutane x voriginal = pstandard x vfinal troom tstandard use the following ratio and proportion formula to determine the mass of butane needed to occupy a volume of 22.4 l at stp. grams of butane you used “x” grams of butane ml of butane corrected to stp = 22,400 ml compute the theoretical molar mass of butane based on its formula and the atomic masses on the periodic table. compare your experimental results from #3 to the theoretical value of #4, computing a percent error of your findings using this formula: % error = measured value - accepted value x 100 accepted value use the following ratio and proportion formula to determine the mass of butane needed to occupy a volume of 22.4 l at stp. need asap

Answers: 1

Answer

Chemistry, 22.06.2019 10:00

Part 1: include important facts found through your research. part 2: include your visual display. include your summary of “the chemistry of water” from the national science foundation website. include your experiment. part 3: include responses to the reflection questions.

Answers: 1

Answer

Chemistry, 22.06.2019 10:40

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0

Answers: 2

Answer

Chemistry, 22.06.2019 12:30

Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.

Answers: 3

Answer

You know the right answer?

PLEASE HELP I'VE DONE MOST OF THEM BUT THESE I DONT GET ( 30 POINTS)!!! 1. Tin (II) Chloride is mix...

Questions