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Mekhanik [1.2K]
3 years ago
14

How is the food in a stomach broken down into simpler substances? What chemicals help this process?

Chemistry
1 answer:
Ksenya-84 [330]3 years ago
4 0

Answer:

with the help of the juice contained in it

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Is carbonic acid (H2CO3) soluble in water?
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it is soluble in water

Explanation:

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Given the following chemical reaction: 2 O2 + CH4 CO2 + 2 H2O What mass of CH4 is required to completely react with 100 grams of
AfilCa [17]

Answer:

The mass methane (CH4) required is, 25 grams  (option C)

Explanation:

Mass of oxygen gas = 100 g

Molar mass of oxygen gas = 32 g/mole

Molar mass of methane gas = 16 g/mole

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

2O2 + CH4 → CO2 + 2H2O

<u>Step 2:</u> Calculate the moles of O2:

Moles O2 = mass of O2 / Molar mass of o2  

Moles O2 = 100g / (32g/mole) = 3,125 moles

⇒From the balanced reaction we conclude that  2 moles of O2 react with 1 mole of CH4

⇒ So, 3.125 moles of O2 react with 3.125/2 = 1.563 moles of CH4

<u>Step 3:</u> Calculate the mass of CH4:

Mass of CH4 = moles of CH4 x Molar mass of CH4

Mass of CH4 = 1.563 moles / (16g/ moles) = 25.008 grams CH4

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What are the three major types of water pollutants? Name and describe a few examples for each one.
andrew11 [14]

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b

Explanation:

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How many significant figures are in the number 0.00346
Oliga [24]

Answer:

3

Explanation:

Significant figures are the number of digits in a value, often a measurement, that to the degree of accuracy of the value. All non-zero numbers ARE significant. ...

Zeros between two non-zero digits ARE significant. ...

Leading zeros are NOT significant. ...

Trailing zeros to the right of the decimal are significant. ...

Trailing zeros in a whole number with the decimal shown ARE significant.contributes

8 0
3 years ago
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