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zhannawk [14.2K]
4 years ago
12

2 Zn + O2 → 2 ZnO

Chemistry
1 answer:
meriva4 years ago
3 0

Answer:

we need 6.0 moles of zinc (Zn)

Explanation:

Step 1: Data given

Number of moles ZnO produced = 6.0 moles

Step 2: The balanced equation

2 Zn + O2 → 2 ZnO

For 2 moles Zinc we need 1 mol Oxygen to produce 2 moles Zinc oxide

Step 3: Calculate moles zinc

For 2 moles Zn we need 1 mol O2 to produce 2 moles ZnO

For 6.0 moles 2nO produced, we need 6.0 moles of zinc (Zn) and 3.0 moles of O2 to react.

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Identify the combustion reaction
Paladinen [302]

Answer:

The combustion reaction is the last one, with the C4H12 compound.

Remember that all the combustion reactions has the oxygen as a substract and for products, you'll have CO2 and water.

Explanation:

3 0
4 years ago
Find the mass in grams of 5.34 *10^20 atoms of carbon molar mass 12g
emmasim [6.3K]

0.01068‬g

Explanation:

Given parameters :

Number of atoms = 5.34 x 10²⁰ atoms

Molar mass of carbon = 12g

Unknown:

Mass of carbon = ?

Solution:

A mole of a substance is unit that contains the Avogadro's number of particles.

   1 mole = 6.02 x 10²³ atoms ;

 In  5.34 x 10²⁰ ;

   Number of moles = \frac{5.34 x 10^{20} }{6.02 x 10^{23} }  = 8.9 x 10⁻⁴moles

Mass = number of moles  x molar mass = 8.9 x 10⁻⁴ x 12 = 0.01068‬g

learn more:

Molar mass brainly.com/question/2861244

#learnwithBrainly

6 0
4 years ago
What is the weight of a 7.0-kilogram bowling ball on the surface of the moon.
pentagon [3]

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5 0
3 years ago
Find the mass(grams) in 2.60 mol of lithium ?
scZoUnD [109]

Answer/explanation :

To calculate the number of mass, we use this formula

Number of mole = mass / molar mass

Since we are given the number of mole

Number of mole = 2.60mol

Mass = ?g

Molar mass of Li = 6.941g/mol

2.60mol = mass / 6.941 g/mol

Mass = 2.60 * 6.941

= 18.0466g

Therefore, the number of mass is 18.0466g

8 0
3 years ago
This is correct !! I promise ​
LuckyWell [14K]

Answer:

ok if its correct

Explanation:

7 0
3 years ago
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