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Nonamiya [84]
3 years ago
12

The molar mass of H2O is 18.01 g/mol. The molar mass of O2is 32.00 g/mol. What mass of H2O,in grams, must react to produce 50.00

g of O2
Chemistry
2 answers:
N76 [4]3 years ago
7 0
Answer is: mass of water is 56.28 grams.
Chemical reaction: 2H₂O → 2H₂ + O₂.
m(O₂) = 50.00 g.
n(O₂) = m(O₂) ÷ M(O₂).
n(O₂) = 50 g ÷ 32 g/mol.
n(O₂) = 1.5625 mol.
From chemical reaction: n(O₂) : n(H₂O) = 1 : 2.
n(H₂O) = 2 · 1.5625 mol.
n(H₂O) = 3.125 mol.
m(H₂O) = n(H₂O) · M(H₂O).
m(H₂O) = 3.125 mol · 18.01 g/mol.
m(H₂O) = 56.28 g.
Svet_ta [14]3 years ago
3 0

Answer:

56.28 grams.

Explanation:

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44.625862500000004 grams are in 0.376 mol Kbr! Plz mark as brainliest, hope this helped you!

6 0
2 years ago
2Nal + Cl2 → 2NACI + I2
Sati [7]

Answer:

Mass of iodine = 1954.26 g

Explanation:

Given data:

Mass of chlorine react = 546 g

Mass of iodine produced = ?

Solution:

Chemical equation:

2NaI + Cl₂  →  2NaCl + I₂

Number of moles of chlorine:

Number of moles = mass/molar mass

Number of moles = 546 g/71 g/mol

Number of moles = 7.7 mol

Now we will compare the moles of chlorine with iodine.

                     Cl₂          :          I₂

                      1             :          1

                      7.7         :          7.7

Mass of iodine:

Mass = number of moles × molar mass

Mass = 7.7 mol × 253.8 g/mol

Mass = 1954.26 g

7 0
2 years ago
What is the percent by mass of water in Na2SO4 • 10H2O?
netineya [11]
Your answer is 55.92%
6 0
3 years ago
Which of the following addresses the economic question of how to produce?
Alexxandr [17]

Answer:

b

Explanation:

The correct answer would be <u>requiring individuals to complete specific types of work.</u>

<em>A question of how to produce deals with the processes of production itself. There are several small processes that eventually aggregate together to lead to the production of goods or services. Some of these small processes will definitely require that individuals within the production unit complete specific types of work.</em>

The option of growing corn instead of potatoes and producing more capital goods and fewer consumer products address what to produce while the option of selling natural resources to other countries has to do with for whom to produce.

Correct option: b

7 0
3 years ago
Which source of energy causes most of the water evaporation on Earth’s surface?
elena-s [515]
The heat energy that causes most of the water evaporate on the surface of the Earth is the Sun. Which provides earth most of the thermal energy into the hydro-thermodynamic system on Earth.

{{Sun}}
8 0
3 years ago
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