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Ratling [72]
2 years ago
10

Convert 135 Meters to kilometers

Chemistry
1 answer:
tamaranim1 [39]2 years ago
7 0

Answer:

0.135 km

Explanation:

1 km = 1000 meters

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Which of the following statements about semi-empirical methods are true?
juin [17]

Answer:

a

Explanation:

The correct statement about semi-empirical methods is

It combines a theoretically sound model of bonding with some experimentally determined parameters.

These methods are typically referred to by acronyms which encode some of the underlying theoretical assumptions.

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2 years ago
What is the result of the following calculation? Record to the correct number of significant figures. 7.94 g + 0.0132 g = ?
Korolek [52]
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PLZZZ HELP!!! A chemist has synthesized a heavy element in the laboratory and found that it had this electron configuration:
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Answer:

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5 0
3 years ago
In the laboratory, a quantity of I2 was reacted with excess H2 to give 1.26 moles of HI. It is also known that the percent yield
Anon25 [30]

Answer:

1.008moles of iodine

Explanation:

Hello,

This question requires us to calculate the theoretical yield of I₂ or number of moles that reacted.

Percent yield = (actual yield / estimated yield) × 100

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Estimated yield = ?

Percentage yield = 84%

84 / 100 = 1.2 / x

Cross multiply and solve for x

100x = 84 × 1.2

100x = 100.8

x = 100.8/100

x = 1.008moles

1.008 moles of I₂ reacted in excess of H₂ to give 1.2 moles of HI

5 0
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A gas expands and does P-V work on the surroundings equal to 275 J. At the same time, it absorbs 216 J of heat from the surround
mafiozo [28]

Answer:

answer

Explanation:

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