3 years ago

Which of these redox reactions is spontaneous as written?

Chemistry

1 answer:

qaws [65]3 years ago

5 0

The answer is c hg+a13+>hg2+Al

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In an accident, a solution containing 2.5 kg of nitric acid was spilled. Two kilograms of Na2CO3 was quickly spread on the area

storchak [24]

First we must write a balanced chemical equation for this reaction

$Na_2CO_3 _(_a_q_)+ 2HNO_3_(_a_q_) \implies 2NaNO_3_(_s_) + CO_2_(_g_) + H_2O_(_l_)$

The mole ratio for the reaction between $HNO_3$ and $Na_2CO_3$ is 1:2. This means 1 moles of $Na_2CO_3$ will neutralize 2 moles $HNO_3$ . Now we find the moles of each reactant based on the mass and molar mass.

$2500g HNO_3 \times \frac{mol}{63.01g\ HNO_3} = 39.67 mol\ HNO_3$

$2000g\ Na_2CO_3 \times \frac{mol}{105.99g \ Na_2CO_3} = 18.87 mol\ Na_2CO_3$

$\frac{18.87 mol Na_2CO_3}{39.67\ HNO_3} = \frac{1 molNa_2CO_3}{2 mol HNO_3}$

The $Na_2CO_3$ was enough to neutralize the acid because 18.87:39.67 is the same as 1:2 mol ratio.

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3 years ago

What are three layers of the skin called

andreev551 [17]

The epidermis, the top layer
The dermis, middle layer
The hypodermis, bottom layer

There you go!

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The steps in every scientific investigation must_______________________.

Marizza181 [45]

Answer:

B. begin with a hypothesis

Explanation:

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3 years ago

Motion is... Question 1 options: A change in speed over a certain amount of time. A change in position over a certain amount of

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A change in position over a cetain time

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Which statement regarding this equation is TRUE?

noname [10]

Answer:

iron (III) oxide is a gas

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