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Akimi4 [234]
3 years ago
7

Utilizing dimensional analysis, find the number of inches in a kilometer given that 1 inch = 2.54 centimeters

Chemistry
2 answers:
abruzzese [7]3 years ago
8 0

Answer:

The correct answer is 39,370.

maxonik [38]3 years ago
4 0
To answer this item, we need to utilize the appropriate the conversion factors and the dimensional analysis. 

Our basis for solving is 1 kilometers. It is known that each kilometer is composed of 1000 meters. 
  
          (1 km) x (1000 m/1 km) = 1000 m

Next, we need to determine the number of centimeters. The conversion factor that can be used is 1 meter = 100 centimeters
          (1000 m) x (100 cm/ 1 m) = 100,000 cm

Lastly, we use the given conversion factor to convert the centimeters to inches.
  
              (100,000 cm) x (1 inch / 2.54 cm)
                     = 39,370.08 in

<em>ANSWER: Each kilometer is composed of 39,370.08 inches</em>
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PLEASE CAN SOMEONE EXPLAIN this FOR ME WHAT IS RADIOACTIVE ISOTOPES AND ANSWER THIS QUETION? A nitrogen atom has 7 protons and m
zalisa [80]

Answer:

\frac{15}{7}N

Explanation:

We already know that the mass number of an atom is the sum of the number of protons and the number of neutrons.

So, the mass number of this isotope is;

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3 0
3 years ago
The reaction takes place in water. What happens to the equilibrium when the pressure is increased? a)It favors formation of prod
OLga [1]

Answer:

I don't really get the options but it favoures the reactant side.

Explanation:

Increasing pressure favours the side with fewer moles of gas while decreasing pressure favours the side with the more moles of gas. E.g

If there is 0 moles of gas particles in the reactant side and 1 mole of gas particle in the product side, increasing pressure favours the reactants while decreasing pressure favours the product side.

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6 0
4 years ago
5.36 litars of nitrogen gas are at :25°C and 733 mm Hg
ArbitrLikvidat [17]

Answer:

4.6L

Explanation:

Use the equation (P1*V1)/(T1)=(P2*V2)/(T2)

P= pressure

V= volume

T= temperature in kelvins (remember K= C + 273)

Convert atm to mmHg or vise versa

1.5atm*(760mmhg/1atm)= 1140mmHg

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6 0
3 years ago
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