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Mila [183]
2 years ago
9

HOW MANY MOLES ARE IN 2.6 X 1024 ATOMS OF SILICON?

Chemistry
1 answer:
V125BC [204]2 years ago
8 0

Answer:

Let x moles of silicon contains 2.8x10^24 atoms. 6.02x10^23 atoms are present in 1 mole of Si. Therefore 2.80x10^24 atoms are present in = 2.8x10^24/6.02x10^23 = 4.65 moles of Si.

Explanation:

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15.50 g of NH4Cl reacts with an excess of AgNO3. In the reaction 35.50 g AgCl is produced. what is the theoretical yield of AgCl
Readme [11.4K]

Answer:

The answer to your question is 41.6 g of AgCl

Explanation:

Data

mass of NH₄Cl = 15.5 g

mass of AgNO₃ = excess

mass of AgCl = 35.5 g

theoretical yield = ?

Process

1.- Write the balanced chemical reaction.

              NH₄Cl  +  AgNO₃   ⇒   AgCl  +  NH₄NO₃

2.- Calculate the molar mass of NH₄Cl and AgCl

NH₄Cl = 14 + 4 + 35.5 = 53.5 g

AgCl = 108 + 35.5 = 143.5 g

3.- Calculate the theoretical yield

                 53.5 g of NH₄Cl -------------------- 143.5 g of AgCl

                  15.5 g of NH₄Cl  -------------------    x

                         x = (15.5 x 143.5) / 53.5

                         x = 2224.25 / 53.5

                         x = 41.6 g of AgCl

8 0
3 years ago
Which of the following is an incorrect name for an acid? A. acetic acid B. hydrocarbonate acid C. hydrocyanic acid D. sulfurous
just olya [345]

Answer:

The answer to your question is letter B

Explanation:

Incorrect name

A. acetic acid               This name is correct for the acid with formula CH₃COOH

B. hydrocarbonate acid  This is not the name for acid but for a molecule that has hydrogen and a metal.  

C. hydrocyanic acid   This name is correct for the inorganic molecule with formula HCN

D. sulfurous acid          This name is correct and is the name of the inorganic molecule with formula H₂SO₃.

E. phosphoric acid       This name is correct for the acid with formula H₃PO₄.

5 0
3 years ago
1.
Nata [24]
Oregon trail would be the best answer
8 0
3 years ago
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The maximum number of orbits in an atoms is____.<br> A) 3<br> B) 5<br> C) 7<br> D) 9
Mashcka [7]
The answer///////////b, 5 orbits
5 0
3 years ago
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How do atoms and molecules of elements and compounds combine in chemical reactions?
solong [7]

Answer:

A compound is a unique substance that forms when two or more elements combine chemically. Compounds form as a result of chemical reactions. The elements in compounds are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions that share or transfer valence electrons

8 0
2 years ago
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