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victus00 [196]
3 years ago
15

What is the smallest scale increment of the ruler shown in fig. 4, above?

Chemistry
2 answers:
vichka [17]3 years ago
4 0

Answer:

74 ± 1 klumps; 1.44 ± 0.01 glips  

Step-by-step explanation:

8. <em>Smallest scale </em>

There are no divisions between 0 and 10, so the smallest scale division is 10 klumps.

9. <em>Length of line </em>

You should estimate to the nearest tenth of the smallest scale division.

The line appears to be slightly less than half-way between 70 and 80.

I estimate the length of the line to be 74 klumps, with an uncertainty

of ±1 klump.

10. <em>Smallest scale division </em>

There are 10 divisions between 0 and 1, so the smallest scale division

is 0.1 glip.

11. <em>Length of line </em>

The line appears to be slightly less than half-way between 1.4 and 1.5.

I estimate the length of the line to be 1.44 glips, with an uncertainty

of ±0.1 glip.

Anuta_ua [19.1K]3 years ago
3 0

Answer:

8. In figure 4, the smallest scale increment is 10 units length

9. The length of the line above the "Klump" scale in Figure 4 is 75 ± 5 units length. The  uncertainty is ± 5 units length. This means that the measure is between 70 and 80.

10. In figure 5, the smallest scale increment is 0.1 units length

11. The length of the line above the "Glip" scale in Figure 5 is 1.45 ± 0.05 units length. The  uncertainty is ± 0.05 units length. This means that the measure is between 1.4 and 1.5

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How many kilograms of a fertilizer are made of pure P2O5 would be required to supply 1.69 kilogram of phosphorus to the soil?
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Answer:

3.89 kg P2O5 must be used to supply 1.69 kg Phosphorus to the soil.

Explanation:

The molecular mass of P2O5 is

P2 = 2* 31 =           62

O5 = 5 *<u> 16 =         80</u>

Molecular Mass = 142

Set up a Proportion

142 grams P2O5 supplies 62 grams of phosphorus

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Though this might be a bit anti intuitive, you don't have to convert the units for this question. The ratio is all that is important.

142/x = 62/1.69            Cross multiply

142 * 1.69 = 62x           combine the left

239.98 = 62x               Divide by 62

239.98/62 = x

3.89 kg of P2O5 must be used.

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Answer:

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  • Letter C represents the enthalpy change of the reaction, that is the difference in potential energy between products "G" and reactants "F".

  • Letter D represents the potential energy of products "G".

  • Letter E represents the potential energy of reactants "E".
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Negative feedback is the way by which the body maintains homeostasis and maintains equilibrium in the body.

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V = 8.3 / 13.6

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