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4 years ago

2) 183 cg = kg 5 .00183 kg 0.0183 kg .183 kg 3) 0.25 kg = g

Chemistry

1 answer:

OlgaM077 [116]4 years ago

5 0

Answer:

183 cg = 0.00183 kg

0.25 kg = 250 g

Explanation:

Use conversion factors. 1kg is equal to 1 x 10^5 cg (100000) and 1 kg is equal to 1 x 10^3 grams (1000 grams).

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At 500°C the equilibrium constant, Kp, is 4.00 × 10–4 for the equilibrium: 2HCN(g) H2(g) + C2N2(g) What is Kp for the following

Andrews [41]

Answer: The value of $K_p$ for the equation is $2.5\times 10^3$

Explanation:

The given chemical reaction is:

$2HCN(g)\rightleftharpoons H_2(g)+C_2N_2(g);K_1$

The chemical equation for which the equilibrium constant is to be calculated follows:

$H_2(g)+C_2N_2(g)\rightleftharpoons 2HCN(g);K_p$

As, the equation is the result of the reverse of given reaction. So, the equilibrium constant for the equation will be the inverse of equilibrium constant for the given reaction.

The value of equilibrium constant for the equation is:

$K_p=\frac{1}{K_1}$

We are given:

$K_1=4.00\times 10^{-4}$

Putting values in above equation, we get:

$K_p=\frac{1}{4.00\times 10^{-4}}=2.5\times 10^3$

Hence, the value of $K_p$ for the equation is $2.5\times 10^3$

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4 years ago

Illustrate the law of law of multiple proportions using the formation of SO2 and SO3 by sulphur and oxygen

Natali [406]

As illustrated from law of multiple proportion, the mass of the oxygen which combined with a fixed mass of the sulphur is in simple whole number ratio of 2 is to 3 (2:3).

The law of Multiple proportion states that when two elements combine to form more than one compound, the mass of the second element, which combines with a fixed mass of the first element, will always be ratios of small whole numbers.

To illustrate the law of multiple proportion from sulphur and oxygen, we use the given compounds.

The reaction of oxygen with sulphur to form SO₂ and SO₃:

$S \ + \ O_2 \ -----> SO_2\\\\2SO_2 \ + \ O_2 \ ---> \ 2SO_3$

atomic mass of oxygen = 16 g

atomic mass of sulphur = 32 g

In the formation of SO₂:

mass of sulphur = 32 g and mass of oxygen = (2x16) = 32 g

In the formation of SO₃:

mass of sulphur = 32 g and mass of oxygen = (3 x 16) = 48 g

Notice, while mass of sulphur is constant, mass of oxygen changed.

The ratio of mass of oxygen in the given two compounds = 32g : 48g = 2:3

Thus, based on the law of multiple proportion, the mass of the oxygen which combined with a fixed mass of the sulphur is in simple whole number ratio of 2 is to 3 (2:3).

Learn more here: brainly.com/question/15537778

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3 years ago

Is mendelevium flammable

Alik [6]

No it is not flammable

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2 years ago

Which of the following could be said about ecological footprints?

Thepotemich [5.8K]

A. Exact ecological footprints are often difficult to calculate, but estimates can be useful in comparing populations.

Which of the following could be said about ecological footprints? Exact ecological footprints are often difficult to calculate, but estimates can be useful in comparing populations.

NOT:
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C. Ecological footprints don't take into account resources needed to absorb and manage wastes.
D. The average ecological footprints for various countries are nearly identical.

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3 years ago

When heat energy is removed, two changes are observed:

harkovskaia [24]

Answer: Option (A) is the correct answer.

Explanation:

Condensation is defined as the process in which vapors or gaseous phase changes into liquid phase.

Freezing is the process in which liquid phase changes into solid phase.

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Melting is the process in which solid phase changes into liquid phase.

Therefore, we can conclude that names for given phase changes A and B is that A is condensation and B is freezing.

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4 years ago

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