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3 years ago

If you took a spoonful of tea out of the cup, which would be more painful if it spilled on you? *

1 answer:

6 0

Based on my understanding of this question in my opinion atleast small sharp pain is worse so the cup would be more painful as it would spread that sensation over a large part of the body. (Hope this helps have a great day)

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2Al(s)+Fe2O3(s) → Al2O(s)+2Fe(s) with a delta H=-847 KJ.

Scrat [10]

∆H for given reaction -847kJ

As it's negative reaction is exothermic

2 mol of Al releases 847KJ heat

4 mol Al releases

2(847)
1694KJ

∆H=-1694KJ

5 0

2 years ago

If you were about 10 kilometers above earth, what would the pressure approximately be?

Sliva [168]

Answer:

About 25 kPa

Explanation:

Pressure decreases with height above sea level.

The calculation is rather complicated, so I will refer to the figure below.

It shows that the pressure at 10 km is about 25 kPa.

7 0

4 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

A cylindrical glass bottle 21.5 cm in length is filled with cooking oil of density 0.953 g/mL. If the mass of the oil needed to

jeka57 [31]

Answer:inner Diameter =9.19cm

Explanation:

Density is calculated as Mass/ Volume

therefore

Volume= Mass/ Density = 1360g/ 0.953g/ml=1,427 ml

1ml = 1cm³

1,427ml = 1,427cm³

Also We know that Volume of a cylinder = πr²h or πr²l

1,427cm³ = 3.142 x r² x 21.5 cm

r² = 1,427cm³/ (3.142 x 21.5cm)

r² =21.124cm²

$\sqrt{21.124}$ = r²

r= 4.596cm

Diameter= 2 x radius

=2 x 4.596

=9.19cm

7 0

3 years ago

How would an apple, potato, and onion all taste the same?

castortr0y [4]

Answer:

Explanation:

Says it on the side of meh screen :P

(Ez question in lol)

6 0

3 years ago

Read 2 more answers