<span>Acetylene (C2H2) has a triple bond between the two carbons. So 3 pairs of electrons. Biomed is talking about ethylene (C2H4).</span>
Answer:
34g
Explanation:
We'll begin by writing the balanced equation for the reaction. This is illustrated below:
H2S + 2AgNO3 —> 2HNO3 + Ag2S
Next, we shall determine the number of mole of H2S required to react with 2 moles of AgNO3.
This is illustrated below:
From the balanced equation above,
We can see that 1 mole of H2S is required to react completely with 2 moles of AgNO3.
Finally, we shall convert 1 mole of H2S to grams. This is shown below:
Number of mole H2S = 1 mole
Molar mass of H2S = (2x1) + 32 = 34g/mol
Mass = number of mole x molar Mass
Mass of H2S = 1 x 34
Mass of H2S = 34g
Therefore, 34g of H2S is needed to react with 2 moles of AgNO3.
A decrease in population which means animals and plants.
The molarity of a 250. mL H2SO4 solution that was made from a 20.0 mL of a 10.0 M stock solution is 0.8M.
<h3>How to calculate molarity?</h3>
The molarity of a solution can be calculated using the following expression:
CaVa = CbVb
Where;
- Ca = concentration of acid
- Cb = concentration of base
- Va = volume of acid
- Vb = volume of base
In this question;
- Ca = ?
- Va = 250mL
- Cb = 10M
- Vb = 20mL
Ca × 250 = 10 × 20
250Ca = 200
Ca = 200/250
Ca = 0.8M
Therefore, the molarity of a 250. mL H2SO4 solution that was made from a 20.0 mL of a 10.0 M stock solution is 0.8M.
Learn more about molarity at: brainly.com/question/2817451
Heat fusion is the amount of energy required to convert one mole of ice into water, 16650J is per 50g so if we divide 16650 by 50 we find it per gram: 16650/50 = 333J/g or 0.33KJ/g
hope that helps :)
