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TiliK225 [7]
3 years ago
5

What IONS are present in MgCO₃ (magnesium carbonate)? Mark

Chemistry
1 answer:
Alja [10]3 years ago
4 0

Answer:

Answer:

Explanation:

"Magnesium is an alkaline earth metal, and forms a Mg2+ ion. And carbonate ion, CO2−3 , has an equal an opposite charge. And thus the ionic species is MgCO3"

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A balloon that had a volume of 3.50 L at 25.0°C is placed in a hot room at 40.0°C. If the pressure remains constant at 1.00 atm,
inna [77]

Answer:

3.676 L.

Explanation:

  • We can use the general law of ideal gas: PV = nRT.

where, P is the pressure of the gas in atm.

V is the volume of the gas in L.

n is the no. of moles of the gas in mol.

R  is the general gas constant,

T is the temperature of the gas in K.

  • If n and P are constant, and have different values of V and T:

(V₁T₂) = (V₂T₁)

  • Knowing that:

V₁ = 3.5 L, T₁ = 25°C + 273 = 298 K,

V₂ = ??? L, T₂ = 40°C + 273 = 313 K,

  • Applying in the above equation

(V₁T₂) = (V₂T₁)

∴ V₂ = (V₁T₂)/(T₁) = (3.5 L)(313 K)/(298 K) = 3.676 L.

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3 years ago
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4 years ago
Ionic compounds can conduct electricity when dissolved in water due to the presence of free floating ions.
tankabanditka [31]

Answer:

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Moles of NH3 = mass of NH3/molecular mass of NH3 = 1.7/17= O.1 MOLES. 
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The comparison of the masses of equal volumes of material is also defined as
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Density, I am pretty sure this is the correct answer.
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