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Dima020 [189]
2 years ago
13

3. How many moles in 28 grams of CO2?

Chemistry
2 answers:
Vilka [71]2 years ago
8 0
0.636 moles in 28 grams of CO2
Burka [1]2 years ago
6 0

Answer:

0.636 moles

Explanation:

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You have added IgG-sensitized red cells to the negative indirect antiglobulin test result of the antibody screen procedure. You
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Answer:

Positive

Explanation:

The antibody screen interpretation is positive. That's because of clump formation when antibody reacts with the antigen and agglutination occurs.

It means that the antibodies were present in the sample that react with the antigen present in the test tube.

5 0
3 years ago
2) Write a hypothesis for the Observation and question below. Be sure to use the proper “If…, then…” format in your answer. Iden
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4 0
3 years ago
Identify this compound: KClO4
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3 0
2 years ago
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How much heat is absorbed when a 298.3 g piece of brass goes from 30.0 to 150
igor_vitrenko [27]

Answer:

Q = 1360.248 j

Explanation:

Given data:

Mass of brass = 298.3 g

Initial temperature = 30.0°C

Final temperature = 150°C

Specific heat capacity of brass = 0.038 J/g.°C

Heat absorbed = ?

SOLUTION:

Formula:

Q = m.c. ΔT

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m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = 150°C - 30.0°C  

ΔT = 120°C

Q = 298.3 g × 0.038 J/g.°C × 120°C

Q = 1360.248 j

3 0
3 years ago
Do the number of protons in an atom of an element always equals its atomic weight.
Elenna [48]
No. The number of a protons is not equal to it's atomic weight, instead it is equal to the 'atomic number'
5 0
3 years ago
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