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Kisachek [45]
3 years ago
15

__MgCl2 +

Chemistry
1 answer:
Anna35 [415]3 years ago
6 0

Answer:

24.5 g of NaCl

Explanation:

We begin from the balanced reaction:

3MgCl₂ +   2Na₃PO₄  →    6NaCl   +  Mg₃(PO₄)₂

If the sodium phosphate is in excess, then the limting reagent is the magnessium chloride.

We convert mass to moles:

20 g . 1mol / 95.2g = 0.210 moles.

3 moles of MgCl₂ can produce 6 moles of NaCl

0.210 moles of salt, may produce (0.210 . 6) /3 = 0.420 moles

Ratio of reactant is twice the product

We convert the moles to mass:

0.420 mol .  58.45 g/mol = 24.5 g

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4 0
4 years ago
Which type of metals have high densities, strenght, and resistance to corrosion
Mademuasel [1]
Stainless, steel, chrome, nickel, iron, copper, cobalt, molybdenum, tungsten and titanium,
7 0
3 years ago
The mass of a quantity of Cl gas (70,906 g/mol) that occupies<br> 50.0L at 27.0°C and 721 mm Hg is:
inessss [21]

We need no of moles

Apply ideal gas equation

  • PV=nRT
  • n=PV/RT
  • n=721(50)/8.314(300)
  • n=14.4mol

So

mass

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4 0
2 years ago
The proton-proton chain ____ (A) combines two hydrogen nuclei to produce a single helium nucleus and energy.(B) splits a helium
emmainna [20.7K]

Answer:

(C) is the mechanism that increases the temperature between the photosphere and corona of the sun.

Explanation:

When a stars is converted from hydrogen to helium then this is known as proton -proton chain reaction.Due to this reaction the temperature between corona of the sun and photosphere increases.The main reason for increasing the temperature is exothermic reaction.

So the option C is correct.

(C) is the mechanism that increases the temperature between the photosphere and corona of the sun.

8 0
4 years ago
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tino4ka555 [31]

Answer: 1 mole of Ca has the greatest mass.

Explanation:

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1 mole of Ca has a mass of 40 g.

1 mole of CO has a mass of 28 g

1 mole of O_2 has a mass of 32 g

1 mole of CH_4 has a mass of 16 g.

1 mole of NO has a mass of 30 g.

Thus the greatest mass is of 1 mole of Ca

8 0
3 years ago
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