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Lera25 [3.4K]
3 years ago
15

What is the tempature -34°C expressed in kelvins? ​

Chemistry
2 answers:
8090 [49]3 years ago
7 0

Answer:

239.15 is the answer

Explanation:

LekaFEV [45]3 years ago
6 0

Answer:

307.15 hope it helps

Explanation:

your wecome

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The specific heat of zinc is 0.39 J/g*°C. How much energy needed to change the temperature of 34g of zinc from 22°C to 57°C. Is
Svetlanka [38]

Answer:

464.1 J absorbed.

Explanation:

Given data:

Specific heat of zinc =  0.39 J/g°C

Mass of zinc = 34 g

Temperature changes = 22°C to 57°C

Energy absorbed or released = ?

Solution:

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = 57°C -  22°C

ΔT = 35°C

Q = m.c. ΔT

Q = 34 g. 0.39 J/g°C. 35°C

Q = 464.1 J

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On average, how many hours of sleep do teenagers need each night? 7 hours 7.5 hours 8 hours 8.5 hours
Marrrta [24]

Answer:

8 to 8.5 since that is the recommended and people usualy sleep more than that

5 0
3 years ago
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The Chalfont soils are a distinct group of soils found in Pennsylvania, New Jersey, and Maryland. The parent material for these
Lelechka [254]
I believe the answer is D. loess. The loess soil is a predominantly silt-sized sediment formed by accumulation of wind blown dust. This soil is highly porous, homogeneous, pale yellow and friable. One way of forming loess is from glaciers and that is why they contain glacially ground flour like clay and silt.
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In which of the following is the name and formula paired correctly?
Pavel [41]

Answer:

Stannic fluoride, SnF4

Explanation:

The chemical formula of Barium nitride is Ba(NO3)2.

The chemical formula of Cobaltous chloride is COCl2.

The chemical formula of Sodium Oxide is Na2O.

So the correct one is stannic fluoride, SnF4.

6 0
3 years ago
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CHEMISTRY QUESTION WILL MARK YOU BRAINLIEST!
sammy [17]

Answer:

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D) The number of collisions decreases with increase in pressure.

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