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Aleksandr [31]
3 years ago
14

Someone please walk me through this. I googled way too much this semester and I'm paying for it on this test. Just tell me how t

o get the answer cause i have no clue where to start and im literally freaking out.
Choose the correct formula for the following ionic compound. Cobalt (IV) Sulfate

CoSO4

Co4(So4)2

Co(SO4)2

Co(SO4)4
Chemistry
2 answers:
alex41 [277]3 years ago
4 0

Answer:

Explanation:

co(so4)4

viktelen [127]3 years ago
3 0

Answer: co(SO4)4

Explanation:

there is a  video that helps explain it well.

search "writing ionic formulas- basic introduction"

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A sample of sulfur hexafluoride gas occupies a volume of 5.10 L at 198 ºC. Assuming that the pressure remains constant, what tem
Ludmilka [50]

Answer:

When the volume will be reduced to 2.50 L, the temperature will be reduced to a temperature of 230.9K

Explanation:

Step 1: Data given

A sample of sulfur hexafluoride gas occupies a volume of 5.10 L

Temperature = 198 °C = 471 K

The volume will be reduced to 2.50 L

Step 2 Calculate the new temperature via Charles' law

V1/T2 = V2/T2

⇒with V1 = the initial volume of sulfur hexafluoride gas = 5.10 L

⇒with T1 = the initial temperature of sulfur hexafluoride gas = 471 K

⇒with V2 = the reduced volume of the gas = 2.50 L

⇒with T2 = the new temperature = TO BE DETERMINED

5.10 L / 471 K = 2.50 L / T2

T2 = 2.50 L / (5.10 L / 471 K)

T2 = 230.9 K = -42.1

When the volume will be reduced to 2.50 L, the temperature will be reduced to a temperature of 230.9K

8 0
3 years ago
How can you force a solid compound to the bottom of a melting point capillary? a. tap the closed endb. tap the open endc. use a
snow_lady [41]

Answer: option A. tap the closed end

Explanation:

3 0
3 years ago
an element has a metallic gray appearance. it also has the properties of both a metal and a nonmetal. in which section of the pe
irinina [24]
If it has properties of metal and non metal it is considered a metalloid there are very few spots in which metalloids are located the spots I circled on a blank periodic tables are where the metalloids are located on an actual periodic table your only options are
boron(B) silicon(si) germanium(Ge) arsenic(As)antimony(Sb)tellurium(Te)astatine(At)those are the only places on the periodic table that has metalloids... I hope this helps

6 0
3 years ago
0.0145 moles of helium gas are introduced into a balloon so that the volume of the balloon is 2.54 liters. An additional amount
olga_2 [115]

Answer:

4.43L is final volume of the ballon

Explanation:

Avogadro's law of ideal gases states that <em>equal volumes of gases, at the same temperature and pressure, have the same number of molecules</em>.

The formula is:

\frac{V_1}{n_1} =\frac{V_2}{n_2}

Where V and n are volume and moles of the gas in initial and final conditions.

If the initial conditions are 0.0145 moles and 2.54L and final amount of moles is 0.0253moles, final volume is:

\frac{2.54L}{0.0145mol} =\frac{V_2}{0.0253mol}

V₂ = <em>4.43L is final volume of the ballon</em>

6 0
3 years ago
The modern periodic table has groups.
Snezhnost [94]
Three groups

gases, metals, metalliods/nonmetals
3 0
3 years ago
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