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hjlf
3 years ago
8

Solve 123,000 m x 3,234 m = ?

Chemistry
1 answer:
Leya [2.2K]3 years ago
3 0

Answer:

397782000 m²

Explanation:

Given data:

123000 m × 3234 m =?

Solution:

123000 m × 3234 m = 397782000 m²

when we multiply the given quantities having same unit i.e meter the answer should be m² . It could be the area, and its unit is m².

Area = length (m) × width (m)

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Calculate the heat created by the food if the mass if the water is 100 g, the specific heat of water is 4.18 J/g°C and the chang
bulgar [2K]

Answer : The heat created by the food is, 3971 J

Explanation :

Formula used:

q=m\times c\times \Delta T

where,

q = heat produced = ?

m = mass of water = 100 g

c = specific heat capacity of water = 4.18J/g^oC

\Delta T = change in temperature = 9.5^oC

Now put all the given values in the above formula, we get:

q=100g\times 4.18J/g^oC\times 9.5^oC

q=3971J

Therefore, the heat created by the food is, 3971 J

5 0
3 years ago
Where is most of the high-level waste stored in the United States
Anna007 [38]

The correct answer is number 5) at the nuclear reactor site.

Most of the high-level waste stored in the United States is at the nuclear reactor site.

Just people who specialize in the radioactive waste can handle this risky procedure because high-level radioactive waste needs treatment by the experts to truly isolated from the biosphere. Radioactive plants keep the waste deep underground because nobody wants another accident like the one that happened in Chernobyl on April 26, 1986.

The other options of the question were 1) the ocean. 2) mountain peaks. 3) volcanic fissures. 4) salt mines.

8 0
4 years ago
How much energy is absorbed when a 50.0 gram magnesium strip is heated from 45 degrees to 90 degrees
Leno4ka [110]
Quantity of heat energy required for change of phase= (mass) x (heat of fusion or heat of vaporization), or in equation form Q=mL. Heat of fusion=80cal/g; heat of vaporization=540 cal/g
quanity of heat energy responsible for a temperature change= (mass) x (specific heat) x (change in temperature), or in equation form,  Q=mcT

Here's another way to calculate it  

Calculate the energy absorbed by 20 grams of 100 C water that is turned into 100 C steam
Q=(20g)(540 cal/g)=10,800 cal 


I hope this helps you.
7 0
3 years ago
( HELP ) ANYONE CAN HELP ME WITH THIS QUESTION PLEASE I REALLY NEED HELP !!!
Kisachek [45]

Answer:

too hard middle school student just need points nothing else

3 0
3 years ago
Pls answer
nataly862011 [7]

Answer:

The sound wave travelled more quickly through the glass of water than the metal pole.

The sound wave travelled the fastest through the helium.

The sound wave travelled the slowest through the metal pole.

These 3 are most likely true.

<u>If you have to </u><u>pick</u><u> </u><u>just</u><u> </u><u>one</u><u>,</u> the sound wave travelled the fastest through the helium.

3 0
4 years ago
Read 2 more answers
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