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3 years ago

2CO +0, 200, what is the mole ratio of carbon monoxide to carbon

Chemistry

1 answer:

Nastasia [14]3 years ago

6 0

Answer:

B. 2.2

Explanation:

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Absolute proof about the origin of a crater on the moon or the "star of Bethlehem" cannot be determined

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Your answer is False love!

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3 years ago

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A chunk of tin weighing 18.5 grams and originally at 97.38 °C is dropped into an insulated cup containing 75.7 grams of water at

balandron [24]

Answer:

The final temperature of the water is 22.44°C.

Explanation:

Heat lost by tin will be equal to heat gained by the water

$-q_1=q_2$

Mass of tin = $m_1=18.5 g$

Specific heat capacity of tin = $c_1=0.21 J/g^oC$

Initial temperature of the tin = $T_1=97.38^oC$

Final temperature = $T_2$ =T

$q_1=m_1c_1\times (T-T_1)$

Mass of water= $m_2=75.7 g$

Specific heat capacity of water= $c_2=4.184 J/g^oC$

Initial temperature of the water = $T_3=21.52^oC$

Final temperature of water = $T_2$ =T

$q_2=m_2c_2\times (T-T_3)$

$-q_1=q_2$ (Law of Conservation of energy)

$-(m_1\times c_1\times (T-T_1))=m_2\times c_2\times (T-T_3)$

On substituting all values:

$-(18.5 g\times 0.21 J/g^oC\times (T-97.38^oC))=75.7 g\times 4.184 J/g^oC\times (T-21.52 ^oC)$

we get, T = 22.44°C

The final temperature of the water is 22.44°C.

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3 years ago

What are the 3 different groups of metals called?

avanturin [10]

Answer: Ferrous metals, non ferrous metals and alloys.

Explanation:

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3 years ago

a 0.1 kg slinky sits at the top of a staircase with 14 J of potential energy. How high is the staircase?

Bezzdna [24]

Answer: The staircase is 14.28 m high.

Explanation:

Given : Mass = 0.1 kg

Potential energy = 14 J

Potential energy is the energy occupied by the position of a substance. Therefore, formula for potential energy is as follows.

P.E = mgh

where,

m = mass

g = gravitational energy = $9.8 m/s^{2}$

h = height of object

Substitute the values into above formula as follows.

$P.E = m \times g \times h\\14 J = 0.1 kg \times 9.8 m/s^{2} \times h\\h = \frac{14 J}{0.1 kg \times 9.8 m/s^{2}}\\= \frac{14 J}{0.98 m kg/s^{2}}\\= 14.28 Js^{2}/ mkg (1 J s^{2}/m kg = 1 m)\\= 14.28 m$

Thus, we can conclude that the staircase is 14.28 m high.

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3 years ago

The moon is about 400,000 km from the earth . Using Newton’s law of gravity how would the attraction between the earth and moon

Ray Of Light [21]

Answer:

The moon is 384472.282 Km from earth

Explanation:

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3 years ago