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adelina 88 [10]
4 years ago
7

Which has the least gravitational potential energy?

Chemistry
1 answer:
kogti [31]4 years ago
8 0

Answer: it’s a 10kg barbell resting on the floor

Explanation:

This has the least gravitational potential energy

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The figure shows four forces exerted on a box.
lakkis [162]
F2 equals 10 N and F4 equals 2 N
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4 years ago
Una disolución contiene 50 gramos de KOH en 0.25 L de Determine la Molaridad de la disolución
snow_tiger [21]

Answer:

1. 3.56 M.

2. 0.99 M.

Explanation:

¡Hola!

1. En este caso, dado que la molaridad de una solution es calculada por medio de la siguiente ecuación:

M=\frac{n}{V}

Es posible calcular la molaridad de 50 gramos de hidróxido de potasio primero calculando las moles en dicha masa por medio de la masa molar:

n=50.0gKOH*\frac{1molKOH}{56.11gKOH}=0.891molKOH

Luego, dado el volumen de la solución, podemos calcular la molaridad:

M=\frac{0.891mol}{0.25L}=3.56M

2. En este segundo ejercicio, procedemos de la misma manera, pues primero calculamos las moles de nitrato de potasio:

n=75gKNO_3\frac{1molKNO_3}{101.1gKNO_3}=0.742mol

Luego, calculamos la molaridad justo como se hizo anteriormente:

M=\frac{0.742mol}{0.35L} \\\\M=0.99M

Best regards!

3 0
3 years ago
MATCH UPS - PLEASE HELP ^^photo attachment
Charra [1.4K]

Answer:

14. c

15. e

16. b

17. d

18. a

Explanation:

5 0
3 years ago
State 3 evidences that the particles of substances are in continuous motion
lisabon 2012 [21]
The answer is gas and it involves the Kinetic molecular theory which is a model used to predict gas behavior. Molecules or atoms
4 0
4 years ago
By which mechanism would a steroid molecule diffuse into the cell?
LUCKY_DIMON [66]

Answer: Directly through the phospholipid membrane

Explanation:

The cell membrane consist of a phospholipid bilayers structure. In the interior of the membrane, the phospholipid tail are hydrophobic, which makes the cell membrane to be selectively permeable, it is permeable to non polar molecules and impermeable to polar molecules.

Because Steroids are fat soluble, non polar compounds, they can diffuse directly through the hydrophobic, non polar core of the phospholipid bilayer without the use of carrier proteins.

5 0
3 years ago
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