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VARVARA [1.3K]
3 years ago
14

PLEASE ANSWER ASAP

Chemistry
1 answer:
SVEN [57.7K]3 years ago
8 0

Answer:

The argument about the chemical and physical changes in the energy is correct.

This is so because when a log is burnt, the chemical change occurs as wood releases energy in the form of carbon dioxide are formed which is irreversible while the changes in energy of movement of the pendulum is a physical change as its potential energy converts to kinetic and kinetic energy again converts to the potential which is a reversible process.

Hence, the argument saying the changes in energy occurring on a pendulum and log is right.

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Hey please answer this for me thanks.
Aleks [24]

Explanation:

Moles of N2 = 84/28 = 3.0mol

Moles of H2 = 29/2 = 14.5mol

Hence amount of ammonia produced = 6.0 * 17 = 102g.

7 0
3 years ago
What was the company responsible for the massive oil spill in the Gulf of Mexico in April 2010?
pickupchik [31]

Answer:Transocean

Explanation:

The Deepwater Horizon rig, owned and operated by offshore-oil-drilling company Transocean and leased by oil company BP, was situated in the Macondo oil prospect in the Mississippi Canyon, a valley in the continental shelf.

3 0
3 years ago
Read 2 more answers
Examine the given reaction. NH4NO3(s) → NH4+(aq) + NO3–(aq) ΔH° = 25.45 kJ/mol ΔS° = 108.7 J/mol·K Which of the given is correct
kobusy [5.1K]

Answer:

B)−6,942 J /mol

Explanation:

At constant temperature and pressure, you cand define the change in Gibbs free energy, ΔG, as:

ΔG = ΔH - TΔS

Where ΔH is enthalpy, T absolute temperature and ΔS change in entropy.

Replacing (25°C = 273 + 25 = 298K; 25.45kJ/mol = 25450J/mol):

ΔG = ΔH - TΔS

ΔG = 25450J/mol - 298K×108.7J/molK

ΔG = -6942.6J/mol

Right solution is:

<h3>B)−6,942 J /mol</h3>

8 0
3 years ago
Which of the following molecules is nonpolar?
Rudik [331]

Answer:

1. BF3 This is a trigonal planar molecule; the electron density is drawn into a cloud that circles the Boron, this is made nonpolar by the geometrically equivalent structure of the surrounding electronegative Fluorines.

2. H2O The 2 lone pairs of e- of Oxygen makes the O partially negative, the H’s, partially positive. Polar.

3. NF3 Lone pair on Nitrogen overwhelmed by the 3 incredibly electronegative Fluorines. Polar

4. CH3Br The “Soft Ion” of Bromine is negative; it is electronegative. Polar.

5. SO2 the lone pairs of Oxygen, at approximately 119°-120° angles to one another will form a reasonance structure; there will be more lone pairs about the Oxygen than the Sulfur; the Sulfur will be partially positive compared to the oxygens. Polar.

7 0
4 years ago
Oxygen is a reactant of___(1)___while being the product for___(2)___.
yuradex [85]

Answer:

Oxygen is a reactant of cellular respiration, while being the product for photosynthesis

Explanation:

Photosynthesis

carbon + water + sunlight -> oxygen and glucose

Cellular respiration

oxygen + glucose -> carbon + water + ATP

6 0
3 years ago
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