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VashaNatasha [74]
3 years ago
9

How do you write a polynomial in standard form?

Chemistry
1 answer:
olchik [2.2K]3 years ago
8 0
<span>One way to write a polynomial is in standard form. In order to write any polynomial in standard form, you look at the degree of each term. You then write each term in order of degree, from highest to lowest, left to write. First, look at the degrees for each term in the expression.</span> and in this way you will be able to write polynominal in standard form.
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Zn +
saul85 [17]

Answer:

1. Theoretical yield = 2.03g

2. Actual yield 1.89g

Explanation:

Let us write a balanced equation. This is illustrated below:

Zn + 2HCI —> ZnCl2 + H2

Molar Mass of HCl = 1 +35.5 = 36.5g/mol

Mass of HCl from the balanced equation = 2 x 36.5 = 73g

Molar Mass of H2 = 2x1 = 2g/mol

1. From the equation,

73g of HCl produced 2g of H2.

Therefore, 74g of HCl will produce = (74 x 2)/73 = 2.03g

Therefore, theoretical yield = 2.03g

2. %yield = 93%

Theoretical yield = 2.03g

Actual yield =?

%yield = Actual yield /Theoretical yield x100

Actual yield = %yield x theoretical yield

Actual yield = 93% x 2.03 = (93/100)x2.03 = 1.89g

Actual yield =1.89g

4 0
4 years ago
When 2.85 moles of chlorine reacts with excess tin, how many moles of tin(IV) chloride are formed?
QveST [7]
Sn + 2Cl2 ---> Sn⁺⁴Cl⁻¹4
         2 mol       1 mol
         2.85 mol     x

x=(2.85*1)/2=1.425≈1.43 mol SnCl4
4 0
3 years ago
Read 2 more answers
Why can the same earthquake have 2 different ratings on the Richer scale and the moment magnitude scale?
Nikolay [14]
This is because some Richer scales are programed or made differently in the factory therefore effecting ones ability to scale an Earth Quake
6 0
3 years ago
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This is the rate at which a substance undergoes a chemical change.
Sedbober [7]
Reactivity; is the chemical property that describes the likelihood and a rate at which a substance undergoes a chemical change or a chemical reaction. A chemical change is the process by which a substance becomes a new and different substance. A chemical reaction occurs when a substance undergoes chemical changes to form a new substance.
6 0
3 years ago
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What are some facts about beryllium?
Triss [41]
It is a hard metal but is brittle at room temperature
5 0
3 years ago
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