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3 years ago

No link 100 points. brainlist you get for answering the question right and Stlwyftgs

Chemistry

2 answers:

Zepler [3.9K]3 years ago

8 0

Answer:43231

Explanation:

Sunny_sXe [5.5K]3 years ago

4 0

Answer:

the answer is project of the philiphines is this and we effectiveness of asya guide to philiphines

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The equation below represents the combination of gaseous atoms of non-metal X and of hydrogen to form gaseous X2He6 molecules. 2

vichka [17]

Answer:

D +405.0kJ mol-¹

Explanation:

Since bond energy is the energy required to break a bond, the energy of dissociation of X₂H₆ = +2775 kJmol⁻¹.

Since there is one X-X bond and six X-H bonds,

Bond energy of one X-X bond + Bond energy of six X-H bonds = energy of dissociation of X₂H₆.

Since bond energy of one X-H bond = 395 kJ mol⁻¹, then

Bond energy of one X-X bond + Bond energy of six X-H bonds = energy of dissociation of X₂H₆

Bond energy of one X-X bond + 6 × one X-H bond = +2775 kJmol⁻¹.

Bond energy of one X-X bond + 6 × 395 kJ mol⁻¹ = +2775 kJmol⁻¹.

Bond energy of one X-X bond + 2370 kJ mol⁻¹ = 2775 kJmol⁻¹

Bond energy of one X-X bond = 2775 kJmol⁻¹ - 2370 kJ mol⁻¹

Bond energy of one X-X bond = +405 kJmol⁻¹

6 0

3 years ago

What is the density of a mineral with a mass of 41.2 g and a volume of 8.2 cm?

iragen [17]

Hey there!:
mass = 41.2 g
Volume = 8.2 cm³
Therefore:
D = m / V
D = 41.2 / 8.2
D = 5.02 g/cm³

8 0

3 years ago

N2 (g) + 3H2 (g) ⇔ 2NH3 (g) + Energy

Elenna [48]

Answer:

b is the answer

3 0

2 years ago

In which of the following cases will the LEAST time be required to arrive at equilibrium? K below refers to the equilibrium cons

mylen [45]

Answer: Option (4) is the correct answer.

Explanation:

It is known that equilibrium constant is represented as follows for any general reaction.

$A + B \rightarrow C + D$

K = $\frac{[C][D]}{[A][B]}$

As equilibrium constant is directly proportional to the concentration of products so more is the value of equilibrium constant more will be the number of products formed.

As a result, more is the time taken by the reaction to reach towards equilibrium. Whereas smaller is the value of equilibrium constant more rapidly it will reach towards the equilibrium.

Thus, we can conclude that cases where K is a very small number will require the LEAST time to arrive at equilibrium.

8 0

3 years ago

Which of the following best explains how minerals get into streams?

Oliga [24]

Answer:

C:Rainwater dissolves minerals out of the rocks and soil along the stream during runoff

7 0

3 years ago

Read 2 more answers