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alexgriva [62]
3 years ago
9

Is bread rising a chemical change or physical change

Chemistry
2 answers:
Sphinxa [80]3 years ago
6 0

Answer:

There is definitely a chemical change taking place during baking, and that is the conversion of baking soda (sodium bicarbonate, NaHCO3) to carbon dioxide (CO2).

Explanation:

Hope this helps :)

Ivanshal [37]3 years ago
3 0

Answer:

Chemical. Things within the bread are having chemical reactions, such as the yeast reacting to the heat and baking.

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Please help, and I’ll thank you.
coldgirl [10]

Answer:

There will be formed 13.82 grams of Fe3O4.

Explanation:

<u>Step 1:</u> the balanced reaction

3 Fe(s) + 4 H2O(l) —— Fe3O4(s) + 4 H2(g)

We see that for 3 moles Fe consumed, there will be consumed 4 moles of H20 and produced 1 mole of Fe3O4 and 4 moles of H2.

<u>Step 2:</u> Calculating moles

⇒mole = mass / Molar mass

⇒moles Fe = 10g / 55.845g/mole = 0.179 moles

⇒moles H2O = 10g / 18g/mole = 0.5556 moles

Since we have 4 moles of H2O consumed for 3 moles of Fe, this means that for 0.179 moles of Fe, we have :

0.179 / 4 *3 = 0.2387 moles of H2O consumed

This means that Fe will be completely consumed and there will remain 0.2387 moles of H2O.

Fe is the limiting reactant and H2O is in excess.

<u>Step 3: </u>Calculate moles of Fe3O4

For 3 moles of Fe consumed, we have 1 mole of Fe3O4 produced.

This means, that for 0.179 moles of Fe consumed, we have 0.179/3 =0.05967 molesof Fe3O4 produced.

<u>Step 4:</u> Calculating mass of Fe3O4

mass= number of moles * Molar mass

mass Fe3O4 = 0.05967 mole * 231.55g/mole = 13.8166 g ≈ 13.82grams of Fe3O4

There will be formed 13.82 grams of Fe3O4.

5 0
3 years ago
Can anyone help please
Aleks [24]

Answer:

Here you go! Hopefully this helps your question.

1) Apples May Lower High Cholesterol and Blood Pressure.

2) Apples Can Support a Healthy Immune System.

3) Apples Are a Diabetes-Friendly Fruit.

Explanation:

None needed

4 0
2 years ago
Read 2 more answers
What is the most reactive metal in Period 4 of the periodic table?
kykrilka [37]

Answer:

Potassium

Explanation:

5 0
2 years ago
How do I solve this question to get the answer : -141
Sati [7]
Hope this would help you
need more details ?

7 0
3 years ago
PLSSS HELP ME !!!!!1
Sliva [168]

Answer:

10 g/cm^3

Explanation:

Density = mass/volume

50 / 5 = 10

10 g/cm^3

5 0
3 years ago
Read 2 more answers
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