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alex41 [277]
3 years ago
10

What is this. please respond asap. 2 and 3

Chemistry
1 answer:
kolbaska11 [484]3 years ago
5 0

A solid stays the same shape. The atoms a close together and don't move that much. A liquid can form to any shape, the atoms bounce around a little bit, but not much. A gas has no shape, the atoms are few and far between.

A.) Liquid

B.) Solid

C.) Gas

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Based on the results you observed for the iodine test and Benedict’s test, is it better to detect enzyme activity by measuring t
dlinn [17]

Answer:

Is better use the Benedict's test by the increase in the amount of the products if the enzyme is a reductase

Explanation:

The Benedict's test works by the reaction of the reducing sugars with the ion cupric of the reactive. If the enzyme is a reductase (degrades polysaccharides into bi o monosaccharides), it should cut the polysaccharide bond and the products would react with the Benedict's cupric ion

I hope you undestand me

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3 years ago
How many atoms are in the peroxide H2O2 molecule? Explain.
Mrrafil [7]
There are two hydrogen and two oxygen molecules because the number next to the atomic number is how many there are.
5 0
4 years ago
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What is the percent composition HCN?
kupik [55]

Answer:

see calculations in explanation

Explanation:

percent = part/total x 100%

part = ∑ atomic mass of element

  • hydrogen = 1.008 amu (atomic mass units)
  • carbon = 12.011 amu
  • nitrogen = 14.007 amu

total = ∑ molecular mass of compound

       = H amu  +  C amu +  Namu

       = 1.008 amu + 12.011 amu + 14.007 amu

       = 27.026 amu

%H = (1.008amu/27.026amu)100% = 3.730%

%C = (12.011amu/27.026amu)100% = 44.442%

%N = (14.007amu/27.026amu)100% = 51.827%

Check results ∑%values = 100%

3.730% + 44.442% + 51.827% = 99.999% ≅ 100%

7 0
3 years ago
A light-year is a way to measure ______ in space.
kirill115 [55]

Answer:

Distance

Explanation:

The light-year is a measure of distance, not time. It is the total distance that a beam of light, moving in a straight line, travels in one year.

4 0
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As the temperature is increased how does the substance move?
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The movement of substances may occur across a semi‐permeable membrane (such as the plasma membrane). A semi‐permeable membrane allows some substances to pass through, but not others.

Explanation:

6 0
3 years ago
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