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Otrada [13]
3 years ago
11

Which of the following is correct for the equation below? 2P(s) + 3Cl2(g) → 2PCl3(g) + 574 kJ

Chemistry
2 answers:
Lilit [14]3 years ago
4 0
It's the first option choice on Plato
inysia [295]3 years ago
4 0

the correct answer is "  ΔH = –574kJ "



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Why do atoms form bonds or why do bonds form?
stiv31 [10]

Answer:

Atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. A chemical bond is a force of attraction between atoms or ions

Explanation:

7 0
3 years ago
trial 2, 2.68 g/cm/3 trial 3, 2.84g/cm/3. aluminum has a density of 2.70g/cm/3 calcute the percent error for each trial.
serg [7]

Answer:

trial 2: 0.74

trial 3: 5.19

I think but the equation for sloving percent error is:

(true value - determined value)/true value * 100

Explanation:

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4 years ago
A chemistry instructor provides each student with 8 test tubes at the beginning of the year. If there are 28 students per class,
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Which of the following will form a metallic bond with a metal?
lisabon 2012 [21]
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4 0
3 years ago
Arunner sprints 550 feet in 100 seconds. If the runner can hold this pace for an hour
Alex
<h3>Answer:</h3>

Distance traveled is 9.055 km

<h3>Explanation:</h3>

Speed is given by dividing distance by time.

The distance given is 550 ft and the time is 100 seconds.

Therefore; Speed = 550 ft ÷ 100 sec

                              = 5.5 ft/sec

We can calculate the distance the runner covered in one and half hour.

Time = 1.5 hours

But 1 hour = 3600 sec

1.5 hours = (1.5 × 3600)

               = 5400 sec

Distance is given by multiplying speed and time

Thus; Distance = 5.5 ft/sec × 5400 sec

                         = 29700 ft

But; 1 m = 3.28 ft

1000 m = 1 km

Therefore; 29700 ft will be equivalent to

 = 29700 ft/3.28 ft

= 9054.878 M

but 1000 m = 1 km

Thus, distance = 9054.878 ÷ 1000 m

                        = 9.055 km

6 0
3 years ago
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