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3 years ago

Identify the oxidizing agent in the reaction: Sn(s) + 2H+(aq) → Sn2+(aq) + H2(g) Sn2+ H2 H+ Sn

Chemistry

1 answer:

MrRa [10]3 years ago

8 0

Answer:

H⁺(aq)

Explanation:

Let's consider the following redox reaction.

Sn(s) + 2 H⁺(aq) → Sn²⁺(aq) + H₂(g)

We can identify both half-reactions.

Oxidation: Sn(s) → Sn²⁺(aq) + 2 e⁻

Reduction: 2 H⁺(aq) + 2 e⁻ → H₂(g)

Sn(s) undergoes oxidation so it is the reducing agent, while H⁺(aq) undergoes reduction so it is the oxidizing agent.

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Give the result of the following mathematical operations to the correct number of significant figures. 5.659 * (3.496 - 2.814) =

shtirl [24]

Answer:

The result is 3.859 in which we use four significant figures.

Explanation:

We start by solving the mathematical operation :

$5.659.(3.496-2.814)=5.659(0.682)=3.859438$

The result for the operation is 3.859438 but the numbers in the operation are given with four significant figures and that is why we are going to use four significant figures to express the result

To express 3.859438 with four significant figures we use the first four digits that appear from left to right starting by the first digit that is different to zero

In this case : 3.859 will be the result with four significant figures.

We also use a rule that says : To decide if the last significant figure remains the same we look for the value of the digit at its right.

If that number is greater than or equal to 5 ⇒ we sum one to the last significant figure

For example 3.859738 = 3.860 with four significant figures because the ''7'' is greater that 5

If that number is less than 5 ⇒ the last significant figure remains the same

In our case : 3.859438 = 3.859 because ''4'' is less than ''5''

7 0

3 years ago

What is S for the reaction N2(g) +O2(g) 2NO? Use G = 173.3 kJ at 303.0 K and H = 180.7 kJ. Use G = H – TS.

Rashid [163]

Given information :

G = 173.3 KJ

H = 180.7 KJ

T = 303.0 K

S = unknown (?)

By using the given formula : G = H - TS , we can calculate the value of 'S'

On rearranging the formula we get : S = $\frac{H-G}{T}$

Plug in the value of G , H and T in the above formula :

S = $\frac{(180.7 KJ - 173.3KJ)}{303.0K}$

S = 0.02442 $\frac{KJ}{K}$

4 0

4 years ago

Read 2 more answers

The non-contact forces portfolio please help I'm just confused about what I'm supposed to do.

MatroZZZ [7]

The non-contact forces portfolio includes Gravitational force, Magnetic force and Electrostatic force.

<h3>What is non contact force?</h3>

Non contact forces are those forces which are applied on any object without any physical interference or contact.

Some non-contact forces are:

Gravitational force: It acts between two objects and depends on the masses of the object and distance between that objects.
Magnetic force: It acts due to the motion of the charged particles.
Electrostatic force: It is a type of induced force which is generated due to rubbing of two objects but when it is generated it remains even after removing the contact of previous objects.

Hence Gravitational force, Magnetic force and Electrostatic force are the non-contact forces.

To know more about non contact forces, visit the below link:

brainly.com/question/18451249

#SPJ1

8 0

2 years ago

Complete the balancing of the equation for the roasting of stibnite, using smallest whole-number coefficients. Sb2S3+O2 yields S

Yanka [14]

The answer is 2Sb2S3 + 902 yields 2Sb2O3 + 6SO2

And the question os just asking you to find the simplest for of balancing for this equation