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Zigmanuir [339]
3 years ago
11

Al + h2so4 → al2(so4)3 + h2 when the equation is correctly balanced, the coefficient of h2so4 is -

Chemistry
1 answer:
Yuri [45]3 years ago
8 0
First, we have to balance the equation:

Al +  H2SO4 → Al2(SO4)3 + H2

we have the number of Al atoms not equal on both sides so we will put 2 Al instead of Al on the left side of the equation.

2Al + H2SO4  → Al2(SO4)3 + H2 

now we have an unequal number of (SO4) group on both sides of the equation so we put  3H2SO4 instead of H2SO4

2Al + 3H2SO4 → Al2(SO4)3 + H2

now, we have to put 3H2 instead of H2 to make the H atoms equals on both sides.

2Al + 3H2SO4 → Al2(SO4)3 + 3H2 this is the final balanced equation.

∴ the coefficient of  H2SO4 is 3
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Based on periodic properties, choose the more metallic element from each of the following pairs.
dimulka [17.4K]

Answer:

Sr is the more metallic element

Bi is the more metallic element

O is the more metallic element

As is the more metallic element

Explanation:

One thing should be clear; metallic character increases down the group but decreases across the period.

Hence, as we move across the period, elements become less metallic. As we move down the group elements become more metallic.

This is the basis upon which decisions were made about the metallic character of each of the elements listed above.

7 0
3 years ago
What is the maximum number of covalent bonds that can be formed by one carbon atom? 1 2 3 4
Rainbow [258]
The maximum number of covalent bonds formed by a single carbon atom is 4

5 0
3 years ago
Help please fast will mark as Brainliest
wlad13 [49]

Answer:

The answer is 2i on right hand side.

Explanation:

We should star by checking the equation from right.

First we check how many Zn r there in left hand side. Which is 1. Let us check how many Znr there in right hand side, there is 1.So Zn is balanced, and don't worry about Znplus2 on right hand side it is just the ions not how many zinc r there.

Now let us check how many I are there left hand side. Which is 2. Now how many I are there in right hand side? Only 1.

So we put 2 behind I.

Now there r 2 I on both sides.

Its simple actually.

3 0
3 years ago
Read 2 more answers
The atomic mass of an imaginary element X is 30.7377 amu. Element X has three isotopes. One isotope has an isotopic mass of 30.5
ryzh [129]

Answer:

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Explanation:

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8 0
3 years ago
Consider the following reaction where Kc = 34.5 at 1150 K:2SO2(g) + O2(g) 2SO3(g)A reaction mixture was found to contain 4.77×10
sukhopar [10]

Answer:

Explanation:

[ so₃] = 4.37 x 10⁻²

[so₂] = 4.77 x 10⁻²

[ o₂] = 4.55 x 10⁻²

Qc = (4.37)²x10⁻⁴ /(4.77)².(4.55) x 10⁻⁶ =18.44

Qc is less than Kc hence in order to reach equilibrium more of so₃ will be produced . Statement 1 is true.

Kc is always constant . Statement 2 is false.

Statement 3 is false because statement 1 is true.

Qc Is smaller than Kc . So statement 4 is false.

The reaction is not in equilibrium. Statement 5 is false.

3 0
3 years ago
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