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suter [353]
3 years ago
5

CaCO3(s) + HCl(aq) -> CO2(g) + H2O(l) + CaCl2(aq)

Chemistry
1 answer:
andrew11 [14]3 years ago
3 0

Explanation:

CaCO _{3(s)}  + 2HCl _{(aq)}→ CO _{2(g)}  + H2O _{(l)}  + CaCl _{2(s)}

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Help!!!!!!!!!!!!!!!!!!
skad [1K]

The density of the sample : 0.827 g/L

<h3>Further explanation</h3>

In general, the gas equation can be written  

\large {\boxed {\bold {PV = nRT}}}

where  

P = pressure, atm , N/m²

V = volume, liter  

n = number of moles  

R = gas constant = 0.082 l.atm / mol K (P= atm, v= liter),or 8,314 J/mol K (P=Pa or N/m2, v= m³)

T = temperature, Kelvin  

n= 1 mol

MW Neon = 20,1797 g/mol

mass of Neon :

\tt mass=mol\times MW\\\\mass=1\times 20,1797 =20.1797~g

The density of the sample :

\tt \rho=\dfrac{m}{V}\\\\\rho=\dfrac{20,1797}{24.4}=0.827~g/L

or We can use the ideal gas formula ta find density :

\tt \rho=\dfrac{P\times MW}{RT}\\\\\rho=\dfrac{1\times 20.1797}{0.082\times 298}\\\\\rho=0.826~g/L

8 0
3 years ago
How much heat energy must be absorbed to completely melt 35.0 grams of H2O(s) at 0°C?
saul85 [17]
1.94 * 6. 01 = 11.7 which is approximately same as 11 700. So the answer is 3).
7 0
3 years ago
How does the atomic radius of an element is related to its metallic character
Aneli [31]

Answer:

The large the atomic radius the more the metallic character of elements

Explanation:

The atomic radius is related to the metallic character in a way that the larger the atomic radius, the more metallic a body becomes.

Therefore, as we go down a group, metallic character increases.

  • Metallic character relies on the ability and willingness of an atom to share its valence electrons.
  • As the size of an atom becomes large, the more metallic it is and the more its metallic character.
  • In some other cases this character is known as electropositivity.
5 0
3 years ago
You are given two beakers A and B and China rose as an indicator .Beaker A has 20ml of magnesium hydroxIde and 100ml of water. a
kicyunya [14]

Answer:

The darkness of the green color produced in the beakers is different because the concentration of magnesium hydroxide is different in both beakers.

Explanation:

The reason why the flasks have different color intensity is related to the concentration of magnesium hydroxide.

An indicator usually changes color because its conformation changes according to the pH. The higher the base level, the pH is higher. Then the color shift will be more intense.

Beaker A has 20 ml of magnesium hydroxide and 100 ml of water and beaker B has 50ml of magnesium hydroxide and 100ml of water.

Beaker A is more diluted than beaker B.

Therefore, beaker B is greener than beaker A.

6 0
3 years ago
How many grams of lithium hypochlorite (LiClO) are there in 0.594 moles?
Flauer [41]

Answer : The mass of lithium hypochlorite are, 34.7 grams.

Explanation : Given,

Moles of LiClO = 0.594 g

Molar mass of LiClO = 58.4 g/mol

Expression used :

\text{ Mass of }LiClO=\text{ Moles of }LiClO\times \text{ Molar mass of }LiClO

Now put all the given values in this expression, we get:

\text{ Mass of }LiClO=(0.594moles)\times (58.4g/mole)

\text{ Mass of }LiClO=34.7g

Therefore, the mass of lithium hypochlorite are, 34.7 grams.

3 0
4 years ago
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