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beks73 [17]
3 years ago
9

which molecule can diffuse from the digestive tract into the human blodstream without first being digested

Chemistry
1 answer:
sweet [91]3 years ago
5 0
Water molecules. It doesn't has to be digested and can be directly absorbed into the small intestine and large intestine. water does not has a type of enzyme that digest it, unlike other nutrients compounds such as carbohydrates or protein.
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What is the molecular mass
Nutka1998 [239]
100.08 is the molecular mass.
5 0
2 years ago
Complete the sentences to explain your reasoning.
vredina [299]

Answer:

1-b

2-weaker(option is incorrect)

3-a

Explanation:

1-b because iodine is more electronegative because of this negative on iodine will be more stable as negative charge on more electronegative element is more stable.

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3-a hydrogen has more negative electron affinity so hydrogen will have -1 charge and it will behave as a electron donar atom that is basic not acidic hence NaH is not acidic.

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3 years ago
How much energy is lost to condense 300. grams of steam at 100.C?
True [87]

Energy lost to condense = 803.4 kJ

<h3>Further explanation</h3>

Condensation of steam through 2 stages:

1. phase change(steam to water)

2. cool down(100 to 0 C)

1. phase change(condensation)

Lv==latent heat of vaporization for water=2260 J/g

\tt Q=300\times 2260=678000~J

2. cool down

c=specific heat for water=4.18 J/g C

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Total heat =

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3 years ago
Freon-12, CF2Cl2, which has been widely used in air conditioning systems, is considered a threat to the ozone layer in the strat
Vilka [71]

Answer:

The root mean squared velocity for CF2Cl2 is  v_{rms}= 207.06 m/s

Explanation:

From the question we are told that

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Root Mean Square velocity is mathematically represented as

      v _{rms} = \sqrt{\frac{3RT}{MW} }

 Where  T is the temperature

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For  CF2Cl2 its molecular weight is  0.121 kg/mol

     Substituting values

  v_{rms} = \sqrt{\frac{3 * 8.314 *208}{0.121} }

          v_{rms}= 207.06 m/s

5 0
3 years ago
Read 2 more answers
What is the smallest packet of electromagnetic energy that can be absorbed or emitted
marishachu [46]
I believe a photon is the answer you are looking for.
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4 years ago
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