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Allushta [10]
3 years ago
11

1. Balance the chemical reaction for the production of hydrogen cyanide: __ NH3(g) + __ O2(g) + __ CH4(g) → __ HCN(g) + __ H2O(g

)
(Hint: none of the coefficients are larger than 6)

2.Using the balanced equation in question 1, if 25.1 g of ammonia are reacted, how many grams of hydrogen cyanide will be produced
Chemistry
1 answer:
Solnce55 [7]3 years ago
5 0
<span>2 NH</span>₃<span> + 3 O</span>₂<span> + 2 CH</span>₄<span> </span>⇒<span> 2 HCN + 6 H</span>₂<span>O
2mol                     :           2mol
34g                       :           54g
25,1g                    :           x

x = (25,1g * 54g) / 34g </span>≈ 39,9g<span>
</span>
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3Ba+Al2(SO4)3 --&gt;2Al+3BaSO4,
daser333 [38]

Answer:

13.5 * 10^-2 g

Explanation:

What we know:

Balanced Equation: 3Ba+Al2(SO4)3 -->2Al+3BaSO4,

Grams of Ba: 1

Grams of Al2(SO4)3: 1.8g

Calculate the # of moles of Ba and Al2(SO4)3:

1g Ba/137.3 = 7.3 *10^-3 mol Ba

1.8g Al2(SO4)3/ 342 = 5.3 *10^-3 mol Al2(SO4)3

Find the limiting reactant:

Ba has a coefficient of 3 in the balanced equation, so we divide the # of moles of Ba by 3 to get... 7.3 *10^-3 mol Ba/3 = 2.43 *10^-3

Al2(SO4)3 has a coefficient of 1, so if we divide by 1, we get the same number of 5.3 *10^-3

2.43 *10^-3 is smaller than 5.3 *10^-3, therefore Ba is the limiting reactant.

finally, we just find the number of moles of Al

The ratio of Al to Ba is 2:3 so...

7.3 * 10^-3 * (2/3) = 5 *10^-3 mol Al

CONVERT TO GRAMS

5 *10^-3 mol Al  * 27 = 13.5 * 10^-2 g

<u>Hope that was helpful! </u>

6 0
2 years ago
On which of the following factors does the amount of energy absorbed by an endothermic reaction depend?
Vlad1618 [11]

Answer:

The factors on which the amount of energy absorbed by an endothermic reaction depends are the " physical state of the reactant and the difference in the potential energy of the reactant and the product".

Explanation:

In an endothermic reaction the factors that affects the reaction are  the physical state of the reactant, which thus becomes the enthalpy. And the difference in potential energy of the reactant because if the sum of the potential energy is less than the sum of the potential energy of the product than the endothermic reaction will be positive and the reaction hence will be endothermic.

       \delta H= \delta H_{Product}- \delta H_{Reactant}

7 0
3 years ago
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6 0
3 years ago
What would happen to a sealed bag of chips left in the sun?
olchik [2.2K]

The answer is the gaz inside the bag would expand. (A)

7 0
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Lets say you were doing an experiment on two different chemicals in two different test tubes. One chemical is giving off oxygen
boyakko [2]

Answer:

Tests for gases

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hope it will help

5 0
2 years ago
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