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Ghella [55]
3 years ago
13

Convert 650. J of energy to either kcal or cal

Chemistry
1 answer:
timama [110]3 years ago
8 0
155.24983 If you look up the formula to this you can do it on your calculator.
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What happens when copper nitrate II is heated​
cupoosta [38]

Answer:

Copper nitrate is a blue coloured crystal.which copper nitrate is heated it loses the water molecule and then when is further heated it decomposes to give redddish brown gas,nitrogen dioxide and oxygen.

Explanation:

4 0
3 years ago
Classify..use the periodic table to classify the elements potassium, bromine a d argon according to how likely their atoms lose
iren2701 [21]

Answer:

Classification will be Potassium, Bromine, and Argon

Explanation:

  • Potassium is more likely to lose electrons and form positive ion
  • Bromine actually gain electrons and forms negative ion
  • Argon does not lose or gain electrons
6 0
3 years ago
3. How many molecules are in 2.10 moles of H2O?
AnnZ [28]

Answer:

<h2>1.264 × 10²⁴ molecules</h2>

Explanation:

The number of molecules can be found by using the formula

N = n × L

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

N = 2.10 × 6.02 × 10²³

We have the final answer as

<h3>1.264 × 10²⁴ molecules</h3>

Hope this helps you

5 0
3 years ago
A motor vehicle has a mass of 1200 kg, and is traveling at a velocity of 70 km/hours to the Southeast. As it travels over a hill
tatuchka [14]

Answer: 35280 J of Gravitational energy

Solution:

Given:

Mass of the vehicle,(m)=1200kg

\text{acceleration due to gravity} (g)=9.8 m/s^2

Maximum height reached,(h)= 3 m

Gravitational energy or gravitational potential energy can be calculated as;

\text{gravitational energy}=mgh

\text{gravitational energy}=(1200 Kg)(9.8 m/s^2)(3 m)=35280 J

Gravitational Energy = 35280 J



5 0
3 years ago
Tina's calculations of the tarantula found that the spider was able to cover 20 centimeters in 5 seconds ,what was the average s
12345 [234]

4 centimetres per second

7 0
3 years ago
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