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Rzqust [24]
3 years ago
13

SnO2 + 2H2 → Sn + 2H2O

Chemistry
1 answer:
anzhelika [568]3 years ago
7 0

Answer:- B: 4.21 is the correct option.

Solution:- The given balanced equation is:

SnO_2+2H_2\rightarrow Sn+2H_2O

From the balanced equation, there is 1:1 mol ratio between SnO_2 and Sn.

To calculate the moles of SnO_2 required to produce500.0 grams of Sn, we need to convert the grams to moles and multiply it by the mole ratio as:

500.0gSn(\frac{1moleSn}{118.71gSn})(\frac{1moleSnO_2}{1moleSn})

= 4.21moleSnO_2

So, the correct option is B: 4.21 moles.

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The sum of pH and pOH for any aqueous solution equals .
Vsevolod [243]

Answer:

pH is calculated by taking negative logarithm of hydrogen ion concentration. Acids have pH ranging from 1 to 6.9, bases have pH ranging from 7.1 to 14 and neutral solutions have pH equal to 7. Thus the sum of pH and pOH is 14

Explanation:

6 0
3 years ago
At 298 K, oxygen (O2) and ozone (O3) have different properties because their
Paha777 [63]

Answer: (3) molecules have different molecular structures.


Explanation:


1) Oxygen (O₂) and ozone (O₃) are allotropes of each other.


2) Allotropes are different structural forms of a same element with different structures and properties, when they are in the same state: solid, liquid, gas.


3) The bonds is what define the structure and properties of the substances, so since O₂ has only two bonds and O₃ has three bonds, the properties and behaviors of the element are different.


4) Other example of allotropes are graphite and diamond: two different forms of carbon. Both, graphite and diamond are formed only by carbon atoms, but they are bonded differently so, as you know, diamond and graphite have different properties: graphite is very soft while diamond is one of the hardest known substances.

5 0
3 years ago
Least to greatest 2.62,2 2/5, 26.8%, 2.26%,271%
olga_2 [115]
2.26%, 26.8%, 2 2/5, 2.62, 271%

Hope this helps! :D
3 0
3 years ago
Read 2 more answers
What are some example of nuclear acids
vladimir1956 [14]
First of all, it is a nucleic acid, not nuclear acid.

Examples are DNA and RNA( Deoxyribonucleic Acid and Ribonucleic Acid)
3 0
3 years ago
(e)
mariarad [96]

Answer:

3.82 × 10 ^-23 g

Explanation:

6.02 x 10^23atoms = 1 mole of sodium

1 atom = 1/(6.02 x 10^23) mole

mass = mole × molar mass

= 1/(6.02 x 10^23) × 23

= 3.82 × 10 ^-23 g

8 0
3 years ago
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