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Orlov [11]
3 years ago
12

Please show all work chemistry thanks 2,3 and 4

Chemistry
1 answer:
nikitadnepr [17]3 years ago
3 0

Answer: 2) 0.21 mole H2O

3) 0.50 mole K2O

4) 123 g Ca( NO3)2

Explanation: solution attached.

For number 2 to find the number of moles of H2O just divide the given in molecules with the Avogadro's number.

For 3 convert grams of K2O to moles by using 1 mole of K2O is equal to the molar mass of K2O

For number 4 moles to grams. Same process with number 3

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What is the vowel.???????????? ​
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3 years ago
If 22.99 g of sodium and 35.45 g of chlorine fully react, how much sodium chloride forms?​
matrenka [14]

Answer:

The answer to your question is: HCl = 58.44 g

Explanation:

To solve this problem, we must remember the law of conservation of mass that says that, matter cannot be created or destroyed, only changes its form.

That means that, the mass of the reactants must be equal to the mass of the products.

               Process

                    Sodium (Na)  +    Chlorine (Cl)   ⇒     Sodium chloride (HCl)

                         22.99 g              35.45 g                            x

              22.99 + 35.45 = HCl

              HCl = 58.44 g

3 0
3 years ago
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F. a dark solid formed on the zinc.

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In any chemical reaction, the rate of the reaction can be increased by
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