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Lerok [7]
3 years ago
14

(10 POINTS PLS ANSWER IF U KNOW)

Chemistry
1 answer:
photoshop1234 [79]3 years ago
6 0

Answer:

Competition

Explanation:

Peppered moths get their color in lieu to become the fittest among all so that they can survive easily. During industrial age, when pollution suddenly became high these moths changed their color through evolution in order to save themselves from their predators.

PLS GIVE BRAINLIEST

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Find the momentum of a 120 g snowball that is rolling with a velocity of 8.9 m/s. Express your answer in two significant figures
Tju [1.3M]

Answer:

30kg m/s.

Explanation:

30 kg m/s

Explanation

Momentum = Mass × Velocity = 10 kg × 3 m/s = 30 kg m/s

Its momentum is 30 kg m/s.

Explanation:

Momentum is defined by the following equation:

p=mv

where m is the mass of the object in kilograms, v is the velocity of the object in meters per second

p=10 kg⋅3 m/s

=30 kg m/s

Also nice photo.

8 0
4 years ago
1 mole of no2(g) has a greater entropy than 1 mole of n2o4(g). true or false
bija089 [108]
In order to answer this, you need to find the empirical data for the standard entropies. Please refer to this link: http://www.mrbigler.com/misc/energy-of-formation.PDF

For NO₂ gas, the entropy is 240 J/mol-K. For N₂O₄ gas, the entropy is 304.2 J/mol-K. Therefore, <em>the statement is false.</em>
7 0
3 years ago
Gallium is composed of two naturally occurring isotopes: Ga−69 (60.108%) and Ga−71. The ratio of the masses of the two isotopes
bulgar [2K]

Answer:

69.7231 u to 4 decimal places.

Explanation:

Gallium is composed of two natural occuring isotopes that is Ga-69(60.108%) with mass of 68.9256 amu and Ga-71(39.892%) with mas of 70.9247 amu. The ratio of their masses are 1.0290. The relative abundance of Ga-69 is 60.11% and Ga-71 is 39.89%.

Calculate average atomic mass of Ga-69 :  

Ga-69 = 60.108% = 0.60108.

GA-71 = 39.892% = 0.39892.

Atomic mass of Ga = (68.9256⋅0.60108)+(70.9247⋅0.39892)

AM(Ga)=69.7231 u to 4 decimal places.

           

4 0
3 years ago
Read 2 more answers
Name two pollutants common to large cities
Stels [109]
1) Nitrogen Dioxide
2) Ground-level Ozone
5 0
4 years ago
10 m/s to 80 m/s in 5 seconds
dusya [7]

900 mph................

7 0
3 years ago
Read 2 more answers
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