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bagirrra123 [75]
3 years ago
13

Which chemical is the reducing agent in the redox reaction below?

Chemistry
1 answer:
pychu [463]3 years ago
4 0

The reducing agent is the element that gets oxidized. Therefore, Zn(s) is the correct choice. It goes from 0 charge to 2+

You might be interested in
the heat of fusion of aluminum is 95 cal/g. calculate how many grams of aluminum(already at its melting point) could be melted w
kumpel [21]
<h3>Mass of aluminium : 13323.47 g</h3><h3>Further explanation</h3>

Given

Lf=latent heat of fusion  of Al = 95 cal/g

Q = 1,265,730 cal

Required

mass of Aluminium

Solution

The heat to change the phase can be formulated :

Q = m.Lf (melting/freezing)

Input the value

1,265,730 cal = m . 95 cal/g

m = 1,265,730 cal : 95 cal/g

m = 13323.47 g

6 0
3 years ago
5. Which one of these species is an ion?
Maksim231197 [3]

The species that represents an ion is B³+ (option A).

<h3>What is an ion?</h3>

An ion is an atom or group of atoms bearing an electrical charge, such as the sodium and chlorine atoms in a salt solution.

Simply put, an ion is said to be an electrically charged atom. This refers to the difference in the number of protons and electrons in the atom of an element.

According to this question, the species with an electrical charge is B³+, hence, it represents an ion.

Learn more about ion at: brainly.com/question/14982375

#SPJ1

4 0
1 year ago
For the following reaction, 4.34 grams of sulfur dioxide are mixed with excess oxygen gas . The reaction yields 3.89 grams of su
Degger [83]

Answer:

5.42g, 71.77%

Explanation:

First, we have to write out the balanced chemical equation. The unbalanced equation can be written as “SO2+O2 -> SO3” and to balance it, we can see that having two mols of SO2 and two mols of SO3 will make each side have the same amount of mols per element on each side. So the balanced chemical equation is “2SO2 + O2 -> 2SO3”

Now, we want to solve for the theoretical yield in grams of SO3. To do this, we have to use dimensional analysis. We convert g SO2 into mols SO2 using the molar mass of the elements. Then we convert mols of SO2 into mols of SO3 using the balanced equation. Once we’ve done that, we can convert mols of SO3 into grams of SO3.

You should know how to look up the molar mass of elements on the periodic table by now. Find the masses and set up the terms so they cancel like so:

4.34g \times  \frac{1mol \: so2}{64.07g \: so2}  \times  \frac{2 \: mol \: so3}{2 \: mol \: so2}  \times  \frac{80.07gso3}{1 \: mol \: so3}

Doing the math, we get 5.42g so3 as the theoretical yield. This is the most amount that you could ever get if the world was a perfect place. But alas, it isn’t and mistakes are gonna happen, so the number is going to be less than that. So the best we can do, is to figure out the percent yield that we got.

In a lab scenario, this was calculated to be 3.89 g as stated by the problem. The percent composition formula is

| \frac{result}{expected \: result} |  \times 100

and plugging the numbers into it, we get:

| \frac{3.89}{5.42} |  \times 100 = 71.77\%

make sure to follow the decimal/significant figure rules of your instructor, but only round at the end. My professor didn't care too much thankfully, but some professors do

6 0
2 years ago
Whats factors create surface currents?
AysviL [449]

Answer:

wind direction, landforms, and surface winds.

6 0
3 years ago
Class science A lunar eclipse occurs when
NeTakaya

Answer:

when the moon passes through earth's shadow

Explanation:

I'll be back soon I have to do my world History test

3 0
3 years ago
Read 2 more answers
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