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adelina 88 [10]
2 years ago
14

PLS HELP S O S *will give brainliest*

Chemistry
1 answer:
Veseljchak [2.6K]2 years ago
8 0

Answer:

ARE U STILL GIVING BRAINLIEST?

Explanation:

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What type of reaction takes place between propene and chlorine? Write down the chemical equation for this reaction.
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Answer:

electrophilic addition

Explanation:

CH3 - CH = CH2 + Cl-Cl ---> CH3 -CH(Cl) - CH2(Cl)

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Why does density increase with more helium
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density increases with more helium because of its molar mass

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2 years ago
Suppose 11.4g of ammonium chloride is dissolved in 250 ml of a 0.3M aqueous solution of potassium carbonate. Calculate the final
Sindrei [870]

Answer:

The molarity of the final ammonium cation is 0.252M

Explanation:

<u>Step 1:</u> Data given

Mass of ammonium chloride (NH4Cl) = 11.4 grams

Volume of 0.3 M aqueous solution of potassium carbonate (K2CO3) = 250 mL = 0.250L

<u>Step 2:</u> The balanced equation

2NH4Cl + K2CO3 → 2KCl + (NH4)2CO3

<u>Step 3:</u> Calculate moles of (NH4)Cl

moles (NH4)Cl = 11.4 grams /53.49 g/mol

Moles (NH4)Cl = 0.213 moles

<u>Step 4: </u>Calculate moles of K2CO3

Moles K2CO3 = Molarity * Volume

Moles K2CO3 = 0.3M * 0.250 L = 0.075 moles

<u>Step 5:</u> Calculate moles (NH4)Cl at the equilibrium

For 2 moles (NH4)Cl consumed, we need 1 mole of K2CO3 to produce 2 KCl and 1 mole of (NH4)2CO3

(NH4)2CO3l will dissolve in 2NH4+ + CO32-

Moles (NH4)2Cl = 0.213 moles - 2*0.075 = 0.063 moles

Moles NH4+ = moles (NH4)Cl = 0.063 moles

<u>Step 6:</u> Calculate Molarity of NH4+

Molarity = Moles / volume

Molarity of NH4+ = 0.063 moles / 0.250 L

Molarity of NH4+ = 0.252 M

The molarity of the final ammonium cation is 0.252M

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3 years ago
Identify factors that affect the ratio when substances combine to form compounds
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Why is iodine placed just after tellurium on the periodic table even though its atomic mass is less than the atomic mass of tell
dem82 [27]
Iodine follows Tellurium in the periodic table of the elements due to its higher atomic number. The atomic number (the number of protons in the nucleus) of Iodine is 53, while that of Tellurium is 52. The elements are not arranged by atomic mass.
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2 years ago
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