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Kryger [21]
3 years ago
7

Which of the following compounds contains the lead (iv) ion?

Chemistry
2 answers:
never [62]3 years ago
7 0

Answer A is right! :)

Oliga [24]3 years ago
6 0
Oxidation state of Pb in PbO2 is +4.
Oxidation state of Pb in PbCl2 is +2.
Oxidation state of Pb in Pb2O is +1.
Oxidation state of Pb in Pb4O3 is +6/4.

Hence option A. PbO2 is correct.
Hope this helps, have a nice day!
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What is the volume of 5.00 moles of gas at STP
Solnce55 [7]

Answer:

the volume of 5.0 g CO2 is 2.6L

CO2 at tsp

8 0
2 years ago
A large natural gas storage tank is arranged so that the pressure is maintained at 2.20 atm. On a cold day in December when the
irakobra [83]

Answer:

V₂= 33581.4  ft³

Explanation:

Given data:

Initial temperature = -15 °C (-15+273 = 258 k)

Initial volume = 28500 ft³

Final temperature = 31 °C (31+273 = 304)

Final volume = ?

Solution:

According to the Charles's law

Temperature and volume are directly related to each other.

V₁/T₁ = V₂/T₂

V₂ = V₁×T₂ /T₁

V₂ = 28500 ft³ × 304 k / 258 k

V₂ = 8664000 ft³.k/ 258 k

V₂= 33581.4  ft³

5 0
4 years ago
Calculate the molecular mass of HCL
liubo4ka [24]
Molecular mass of HCl :

H = 1.00794
Cl= 35.453

HCl :
 
1.00794 + 35.453 = 36.46094 g/mol

hope this helps!
8 0
4 years ago
Can u please help me
maw [93]

Answer:

they are all true

Explanation:

4 0
3 years ago
How many carbon atoms are there in a diamond (pure carbon) with a mass of "48" mg?
blagie [28]

Answer:

              3.47 × 10²³ C atoms

Solution:

Data Given:

                 Mass of Diamond  =  48 mg  =  0.048 g

                 M.Mass of Diamond  =  12.01 g.mol⁻¹ (as it is purely Carbon)

Step 1: Calculate Moles of Diamond as,

                 Moles  =  Mass ÷ M.Mass

Putting values,

                 Moles  =  0.048 g ÷ 12.01 g.mol⁻¹

                 Moles  =  0.576 mol

Step 2: Calculate number of Carbon atoms,

As 1 mole of any substance contains 6.022 × 10²³ particles (Avogadro's Number) then the relation for Moles and Number of Carbon atoms can be written as,

                 Moles  =  Number of C Atoms ÷ 6.022 × 10²³ Atoms.mol⁻¹

Solving for Number of C atoms,

                 Number of C atoms  =  Moles × 6.022 × 10²³ Atoms.mol⁻¹

Putting value of moles,

                 Number of C atoms  =  0.576 mol × 6.022 × 10²³ Atoms.mol⁻¹

                 Number of C atoms =  3.47 × 10²³ C atoms

7 0
3 years ago
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