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FromTheMoon [43]
3 years ago
6

Which is the following summaries expresses the main points of the best passages

Chemistry
2 answers:
kondaur [170]3 years ago
7 0

Answer:

B

Explanation:

nata0808 [166]3 years ago
4 0

Answer:

do you have multiple choice ?

Explanation:

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grigory [225]

The first part is bioling piont

8 0
2 years ago
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How many moles of nitrogen are in 2.0×10−2mole of quinine?
galben [10]

Answer: 4 x 10 ∧-2  moles of nitrogen.

Explanation:

The chemical formular for quinine is ; C20 H24 N2 O2

As can be seen from the chemical formular;

1 mole of quinine contains 2 moles of Nitrogen

Thus; 2.0 x 10 ∧-2 moles of quinine would contain

         2.0 x 10 ∧-2 x 2 = 4 x 10 ∧-2  moles of nitrogen.

 Therefore 4 x 10 ∧-2  moles of nitrogen are in 2.0×10−2mole of quinine        

7 0
3 years ago
What is the mass of flourine-19
Arisa [49]
18.998403

Explanation:
The internet told me
7 0
3 years ago
A cube of an unknown metal measures 0.250 cm on one side. The mass of the cube is 0.134 g. Which of the following is most likely
rosijanka [135]

Answer:

8.58 g/cm3

Explanation:

density = mass / volume

be attention that the question gives u the length of

one side of the cube so u should calculate the volume

of the cube using your information of math .

1st we calculate the volume of the cube :

 V of cube = a 3= axaxa

                 = 0.250 x0.250 x0.250

                 = 0.0156 cm3

 2nd step

density = mass/volume

             =  0.134/ 0.0156 = 8.58 g/cm3

5 0
3 years ago
Н
AysviL [449]

Answer:

A 3,3-dimethylhexane

8 0
3 years ago
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