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kvv77 [185]
3 years ago
15

Which element is likely to be the most reactive?

Chemistry
2 answers:
BlackZzzverrR [31]3 years ago
8 0

Answer:

Flourine (F)

Explanation:

Is the correct answer on edgenuity! :)

just olya [345]3 years ago
7 0
It might be iodine the most reactive
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The compound is sodium chloride 
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13. What is the symbol for Enthalpy change?
OverLord2011 [107]

Answer:

Explanation:

13 ) symbol of enthalpy change = Δ H .

14 ) enthalpy change is nothing but heat absorbed or evolved .

During fusion enthalpy change

Δ H .= m Lf , m is mass and Ls is latent heat of fusion

During evaporation, enthalpy change

Δ H .= m Lv , m is mass and Lv is latent heat of evaporation

during temperature rise , enthalpy  change

Δ H = m c Δ T

In case of gas , enthalpy change can be calculated by the following relation

Δ H = Δ E + W , Δ E is change in internal energy , W is work done by gas.

15 ) When enthalpy change is negative , that means heat is released to the environment .So reaction is called exothermic .

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5 0
3 years ago
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
3 years ago
A and B are two imaginary substances. The molecules of substance A have weak electrical forces between them. The
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I believe the answer is A, if they have a stronger connection lower the vapor pressure so higher the boiling point
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Bob pours tomato sauce over cooked spaghetti noodles and stirs them together to make a spaghetti cassarole. Which term best desc
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A.


Spaghetti is still visible and hasn’t been mixed homogeneously
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