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Alex787 [66]
2 years ago
15

WILL GIVE BRAINLIEST!

Chemistry
1 answer:
goldenfox [79]2 years ago
6 0

Answer:

A-Metals

Explanation:

because they have valence electrons

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A penny is 0.061 inches thick. What is the value of the 6 in the thickness of a penny? Mathematics not chemistry
Norma-Jean [14]

Answer:

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How many moles of oxygen are produced when 29.2 g of water is decomposed according to H20 H2 + O2​
Katarina [22]

8.1moles

Explanation:

Given parameters:

Mass of water to be decomposed = 29.2g

Unknown:

Number of moles of oxygen.

Solution:

To solve this problem, we first write the balanced reaction equation :

               2H₂O    →     2H₂    +    O₂

Now convert the given mass of the water to number of moles;

  Number of moles of water = \frac{mass}{molar mass}

 

  Molar mass of water = 2(1) + 16 = 18g/mol

  Number of moles of water = \frac{29.2}{18}  = 16.2moles

   From the balanced reaction equation:

   2 moles of water produced 1 mole of oxygen gas;

   16.2 mole of water will produce   \frac{16.2}{2}  = 8.1moles of oxygen gas

learn more:

Number of moles brainly.com/question/1841136

#learnwithBrainly

5 0
3 years ago
How are concentration and chemical reaction rate related?
dem82 [27]

Answer:

When the concentration of all the reactants increases, more molecules or ions interact to form new compounds, and the rate of reaction increases. When the concentration of a reactant decreases, there are fewer of that molecule or ion present, and the rate of reaction decreases.

Explanation:

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2 years ago
Which factor affects a solute's solubility rather than its rate of solution?
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Answer: A

Explanation:

I took the test it was A

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