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Gre4nikov [31]
3 years ago
13

TIMED TEST PLEASE HURRY!!! The development of a new experimental method is most likely to change a theory if it makes it possibl

e to
analyze samples when they are frozen.
perform the experiment in a different lab.
obtain and analyze results more quickly.
study a larger sample size than before.
Chemistry
2 answers:
uysha [10]3 years ago
5 0

Answer:

1. analyze the samples while they are frozen

stuff can react differently when it's colder

hope I could help good luck

Anika [276]3 years ago
3 0

Answer:

1. analyze the samples while they are frozen

stuff can react differently when it's colder

Explanation:

hope I could help good luck

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What are the characteristics shapes of s p and d orbitals
german

Answer:

Explanation:

S orbital has a spherical shape

P orbital has a dumb-bell shape

d orbital has a double dumb-bell shape

3 0
3 years ago
How much work must be done on a 5-kg snowboard to increase its speed from 2 m/s to 4 m/s?
Alekssandra [29.7K]

Answer:

Option C = 30 j

Explanation:

Given data:

mass of snowboard = 5 Kg

Initial speed = 2 m/s

final speed = 4 m/s

work done = ΔE= ?

ΔE= change in kinetic energy

Solution:

Formula:

K.E (initial) = 1/2 × mv²

K.E (initial)  = 1/2 × 5 Kg . (2m/s)²

K.E (initial) = 1/2 × 20 Kg.m²/s²

K.E (initial) = 10 Kg.m²/s² or 10 J      

   Kg.m²/s² = J

K.E (finial) = 1/2 × mv²

K.E (finial) = 1/2 ×  5 Kg . (4m/s)²

K.E (finial) = 1/2 ×  5 Kg . 16 m²/s²

K.E (finial) = 1/2 × 80 Kg.m²/s²

K.E (finial) = 40 Kg.m²/s²  or 40 J

work done =  ΔE = K.E (finial) - K.E (initial)

work done =  ΔE = 40 J - 10 J

work done =  ΔE = 30 J

6 0
3 years ago
Which one of the following changes would cause the volume of a gas to double
Flauer [41]

Answer:

1) If the volume of a container is increased, the temperature increases.

2) If the volume of a container is decreased, the temperature decreases.

Explanation:

This means that the volume of a gas is directly proportional to its temperature.

8 0
3 years ago
What is the polymer used in making car rear lights?
Nimfa-mama [501]

D. Polyacrylonitrite

hope i help my bad if i'm wrong

5 0
3 years ago
Select the correct answer.
Sphinxa [80]
Energy is absorbed in the reaction
8 0
2 years ago
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