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Leviafan [203]
2 years ago
14

Response should be in complete sentences. Answer should at least be 5-7 sentences. (Include the definition of Conservation of Ma

ss, and identify the reactants and products.)
using 5 of the vocabulary words below, write a scientific explanation that describes why the model pictured above does NOT follow the Law of Conservation of Mass.

Vocabulary: Chemical reaction, reactants, products, molecules, atoms, photosynthesis, energy, glucose, water, carbon dioxide, oxygen, matter, mass.

Chemistry
1 answer:
shusha [124]2 years ago
8 0

Answer:

kkkkkkkiuouo 9o                            

Explanation:

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When methanol, CH 3 OH , is burned in the presence of oxygen gas, O 2 , a large amount of heat energy is released. For this reas
luda_lava [24]

<u>Answer:</u> The mass of methanol that must be burned is 24.34 grams

<u>Explanation:</u>

We are given:

Amount of heat produced = 581 kJ

For the given chemical equation:

CH_3OH(g)+\frac{3}{2}O_2(g)\rightarrow CO_2(g)+2H_2O(l);\Delta H=-764kJ

By Stoichiometry of the reaction:

When 764 kJ of heat is produced, the amount of methanol reacted is 1 mole

So, when 581 kJ of heat will be produced, the amount of methanol reacted will be = \frac{1}{764}\times 581=0.7605mol

To calculate mass for given number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

Moles of methanol = 0.7605 moles

Molar mass of methanol = 32 g/mol

Putting values in above equation, we get:

0.7605mol=\frac{\text{Mass of methanol}}{32g/mol}\\\\\text{Mass of methanol}=(0.7605mol\times 32g/mol)=24.34g

Hence, the mass of methanol that must be burned is 24.34 grams

4 0
3 years ago
PLEASE HELP !!!!! PWEASEEEEE
Fantom [35]

Answer:

A option is correct

hope it helps

5 0
3 years ago
Which of the following has the greatest mass, in grams? 1 atom of lead (Pb) 0.5 mol silver (Ag) atoms 0.3 mol gold (Au) atoms 25
Strike441 [17]

Answer : Option C) 0.3 mol of Gold.

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4 years ago
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3 0
3 years ago
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