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Hunter-Best [27]
3 years ago
6

Gallium (III) carbonate formula

Chemistry
1 answer:
Alex17521 [72]3 years ago
4 0
Ga2(CO3)3 is the formula.
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Calculate the pH of a solution with a [H3O+] concentration of 3.0 x 10-9 M.
marta [7]

Answer:pH = 8.52

Explanation:

pH = - log [H3O+]

= - log ( 3.0 x 10-9 M)

= 9 - 0.477 = 8.52

pH = 8.52

7 0
4 years ago
What mass of calcium hydroxide is formed when 10.0g of calcium oxide reacts with 10.0g of water?
nexus9112 [7]

The mass of calcium hydroxide that is formed when 10.0 g of CaO reacts with  10.0 g of water is 13.024 grams


calculation

from the equation

CaO + H2O → Ca(OH)2,

 1 moles of CaO reacted with 1 moles of H2O to form 1 moles of Ca(OH)2

find the moles of each reactant

moles=mass/molar mass

moles of CaO= 10 g/56 g/mol=0.179 moles

moles of H2O = 10 g/18 g/mol 0.556  moles

CaO is the limiting reagent  therefore by use of mole ratio of CaO:Ca(OH)2 which is 1:1 moles of Ca(OH)2 is = 0.179 moles

mass= moles x molar mass

= 0.176 moles x  74 g/mol = 13.024  grams

7 0
4 years ago
Basic Stoichiometry
MrMuchimi

Answer:

1. 23.3 g

2. 82 g

3. 0.402 mol

4. 0.506 mol

Explanation:

We can convert moles (n) to mass (m) using the following expressions that include the molar mass (M).

n = m/M

m = n × M

1. The molar mass of NH₄Cl is 53.49 g/mol.

m = 0.436 mol × 53.49 g/mol = 23.3 g

2. The molar mass of Ca(NO₃)₂ is 164.09 g/mol.

m = 0.50 mol × 164.09 g/mol = 82 g

3. The molar mass of NaCl is 58.44 g/mol.

n = 23.5 g/(58.44 g/mol) = 0.402 mol

4. The molar mass of KMnO₄ is 158.03 g/mol.

n = 79.9 g/(158.03 g/mol) = 0.506 mol

6 0
3 years ago
Which of these are the largest? asteroids, comets, meteors, or are they all the same size?
Aloiza [94]
Comeys because meteors once they enter earths atmosphere it dissolves
3 0
3 years ago
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A substance contains 23.0 g sodium, 27.0 g aluminum, and 114 g fluorine. How many grams of sodium are there in a 102-g sample of
Anuta_ua [19.1K]

Answer:

E. None of the above

Explanation:

4 0
3 years ago
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