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Masja [62]
3 years ago
9

If trees loose there leaves as each seasons progress which biome is that

Chemistry
1 answer:
Kobotan [32]3 years ago
4 0

Answer:

Temperate Deciduous Fores

Explanation:

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Which of the following is not a catalyst? A. Nickel B. Platinum C. Enzymes D. Phosphorus
Mazyrski [523]
The answer would be D because from my research it's the only one that didn't have a catalyst 
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3 years ago
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The reason it takes so much heat to melt ice or evaporate water is that extra energy is required to break _______ bonds between
mart [117]

It takes so much heat to melt ice or evaporate water because extra energy is required to break the hydrogen bonds between water molecules.

<h3>Hydrogen bond</h3>

Hydrogen bonding is an electrostatic force of attraction between a hydrogen atom found between a pair of other atoms having a high affinity for electrons.

Hydrogen bonds cause water to be exceptionally attracted to each other creating cohesion.

It takes so much heat to melt ice or evaporate water because extra energy is required to break the hydrogen bonds between water molecules.

Find out more on Hydrogen bond at: brainly.com/question/12798212

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2 years ago
Helpz me pleaz! I don't quite get it
harina [27]

Answer:

Al2O3

Explanation:

Al2O3 has an ionic bond because the bonds between them are very strong

8 0
3 years ago
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Which of the following is/are INCORRECT conversions in the metric system? Circle ALL that are false - there may be more than one
Artist 52 [7]

Answer:

(b) 50 mL = 0.50 L

Explanation:

Metric system is a measurement system that uses decimalized in all their factor, which mean every rank difference can be expressed as a factor of 10(deci=10). The decimalized number makes it easier to convert the unit, make the metric system easier to be learned and used.  

The Metric system will use a prefix to determine the factor, a kilo is 1000, mili is 1/1000, centi is 1/100, pico is 1/10^12.

(a) 1 km = 1000 m  

True, kilo is 1000

(b) 50 mL = 0.50 L

This option is false. mili is 1/1000, so 50/1000= 0.05 L

(c) 125 mm = 12.5 cm  

True, mili is 1/1000 while centi is 1/100.  

So 125mm will be: 125mm * 100mm/1000cm= 12.5cm

(d) 23 pm = 0.000  000  000  023 m

True, pico is 10^-12

4 0
3 years ago
3) Explain why the standard enthalpy of vaporization, (Delta)Hvap, values for each set of compounds below are not the same.
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Answer:

a. CH4 is only held together by London dispersion forces since any dipoles cancel out due to symmetry. On the other hand H2O  has strong hydrogen bonds

b. PH3 has dipole-dipole forces while NH3 is held together by stronger hydrogen bonding

c. C2H6 and C3H8 . Both substances are held together by London dispersion forces since any dipoles cancel out due to symmetry. However C3H8 has the stronger London dispersion forces of the two because it is a larger molecule,

d. BH3 is held together by London dispersion forces since any dipoles cancel out due to symmetry while OF2​ is held together by stronger dipole-dipole forces

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3 years ago
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