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aleksley [76]
4 years ago
10

Problem Page Ammonium perchlorate is the solid rocket fuel used by the U.S. Space Shuttle. It reacts with itself to produce nitr

ogen gas , chlorine gas , oxygen gas , water , and a great deal of energy. What mass of water is produced by the reaction of 5.9 g of ammonium perchlorate
Physics
1 answer:
Keith_Richards [23]4 years ago
8 0

Answer:

 

Explanation:

the reaction of ammonium perchlorate is as follows .

2 NH₄ClO₄ = N₂ + Cl₂ +2O₂ + 4H₂O.

 235 g                                       72 g

 235g ammonium perchlorate gives 72g water

5.9 g ammonium perchlorate gives ( 72/235) x 5.9 = 1.807 g

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Two charged balls are 10 cm apart. One is positively charged, and the other is negatively charged.
asambeis [7]

Answer:Explanation: The field lines of the electric charges extend from the positive to negative side charge. ... The force between the two charged balls is attractive. It is directly proportional to the product of their charges and inversely proportional to the magnitude of the distance between them.

Explanation:

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8 0
3 years ago
Convert: Thermal conductivity value of 0.3 Btu/(h ft°F) to W/(m °C). Surface heat transfer coefficient value of 105 Btu/(h ft2 o
Finger [1]

Answer:

0.3 Btu/(h ft °F) = 0.5189 W/(m°C)

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Explanation:

<u>Thermal conductivity of a substance is defined as the measure of the tendency of the substance to conduct heat.</u>

<u>The SI unit of thermal conductivity is W.m⁻¹K⁻¹ .</u>

From the question , 0.3 Btu/(h ft °F) is to be converted to W/(m°C)

Thus,

1 Btu/(h ft °F) = 1.7296 W/(m°C)

So,

0.3 Btu/(h ft °F) = 1.7296×0.3 W/(m°C) = 0.5189 W/(m°C)

Thus,

<u>0.3 Btu/(h ft °F) = 0.5189 W/(m°C)</u>

<u>Heat transfer coefficient is defined as proportionality constant between heat flux (Thermal power per unit area) and the temperature difference of the substance for that flow of heat.</u>

<u>The SI unit of thermal conductivity is W.m⁻²K⁻¹ .</u>

From the question , 105 Btu/(h ft² °F) is to be converted to W/(m²°C)

Thus,

1 Btu/(h ft² °F) = 5.6783 W/(m²°C)

So,

105 Btu/(h ft² °F) = 5.6783×105 W/(m²°C) = 596.2215 W/(m²°C)

Thus,

<u>105 Btu/(h ft² °F) = 596.2215 W/(m²°C)</u>

3 0
3 years ago
Kiley went 5.7 km/h north and then went 5.8 km/h west. From start to finish, she went 8.1 km/h northwest.
Serggg [28]

Yes, that's a reasonable rounded value for the solution.

     (5.7)² + (5.8)²  =  (32.49) + (33.64)  =  66.13

       √66.13 = 8.132...

                   =  8.1 when rounded to the nearest tenth.

The solution ' 8.1 ' is a reasonable rounded value, but only
if the question is changed to say 'km' at every place where
it now says 'km/hr'.

If 'km/hr' is correct, then there's no way to calculate Kiley's
effective northwesterly speed, using only the given information. 

We don't know how long she traveled north at 5.7 km/hr,
and we don't know how long she traveled west at 5.8 km/hr. 
So we don't know the distance between her start and end
points, and we don't know how long she traveled altogether ...
exactly the two numbers we need in order to calculate her
average speed.  Or even, for that matter, the average direction
of her trip from start to finish.

6 0
3 years ago
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