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QveST [7]
4 years ago
11

Perform the given operation and report the answer with the appropriate number of significant figures. 1.307 m + 45.2 m= ____ m i

have been stuck on this one forever please help!
Chemistry
1 answer:
damaskus [11]4 years ago
3 0

Answer:

46.5

Explanation:

1.307 m + 45.2 m = 46.507

Rounded to the correct amount of signifigant figures it would be 46.5.

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1. A given mass of air has a volume of 6.00 L at 80.0°C. At constant pressure, the temperature is
earnstyle [38]

3 L will be the final volume for the gas as per Charle's law.

Answer:

Explanation:

The kinetic theory of gases has two significant law which forms the backdrop of motion of gases. They are Charle's law and Boyle's law. As per Charle's law, the volume of any gas molecule at constant pressure is directly proportional to the temperature of the molecule.

V∝ T

Since, here two volumes are given and at two different temperatures with constant pressure. Then as per Charle's law, the relation between the volumes of air at different temperature will be

\frac{V_{1} }{T_{1} }= \frac{V_{2} }{T_{2} }

So in this case, V1 = 6 L and T1 = 80° C. Similarly, T2 = 40° C. So we have to determine the V2.

\frac{6}{80}=\frac{V_{2} }{40}

V_{2}=\frac{6*40}{80}=3 L

So, 3 L will be the final volume for the gas as per Charle's law.

4 0
3 years ago
The experiment where the factors being tested are not applied. It allows scientists to set a baseline to compare the experimenta
olasank [31]

Answer:

An experiment is a research method performed within a completely controlled environment that uses groups of individuals ( subjects), one of which the factors being tested are not spplied on, an independent factor of the hypothesys ( to be tested ), for example the resilience of a group of teenagers) and a dependant factor that is applied to check how it varyes depending on the tested factor ( for example, the most challanging experience of their generation)

5 0
4 years ago
Why do you think dark surfaces absorb radiation better than light surfaces?
laiz [17]

Your answer→ <em>The lighter side absorbs less of the incident light, reflecting some of the energy. Darker materials also emit radiation more readily than light-colored materials, so they cool faster.</em>

7 0
3 years ago
What are three types of beta decay
faltersainse [42]
Beta minus and beta plus
6 0
3 years ago
Which species has the shortest carbon-nitrogen bond, CH3CN, CH3NH2, or CH2NH? acetonitrile methylamine methanimine (c) Which spe
Arturiano [62]

Answer:

Shortest carbon-nitrogen bond = CH3CN, strongest carbon-nitrogen bond = CH3CN

Explanation:

Bond length is defined as the distance between the centers of two covalently bonded atoms, in this case; carbon and hydrogen.

The length of the bond is determined by the number of bonded electrons (the bond order).

The higher the bond order, the stronger the pull between the two atoms and the shorter the bond length.  

Therefore, bond length increases in the following order: triple bond < double bond < single bond.

CH3CN - There's a triple bond between Carbon and Nitrogen

CH3NH2 - The bond between carbon and nitrogen is a single bond.

CH2NH - The bond between carbon and nitrogen is a double bond.

The specie with the shortest carbon-nitrogen bond is CH3CN (acetonitrile).

The species with the strongest carbon-nitrogen bond is also CH3CN (acetonitrile) because it contains a triple bond. A triple bond contains one sigma and 2 pi bonds. The energy required to break it is more when compared to the other bonds hence, it is the strongest bond.

6 0
3 years ago
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