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Answer:
It should be Magnetic fields can push and pull objects without touching
but I only say with touching. Maybe it's an error on you're teachers/Prof behalf.
Related Questions
How long does sucrose take to decompose?
Please need help with that!
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Answer:
> 50h of holding at 120 °C in a sealed pan
Explanation:
The loss of crystaline structure of sucrose was reported at various temperatures, but decompose.
SCIENCE- The Periodic Table of elements
help help
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Answer:
hydrogen is the first in periodic table
2. 14g of Nitrogen gas and 8.0g of hydrogen react to produce ammonia according to the equation: N2 + 3H2 -- 2NH3 Calculate the mass of hydrogen leftover once the reaction has happened.
a) Identify the limiting reagent in this reaction. Give a reason for your answer.
b) Determine the amount, in moles of the limiting reagent.
c) Determine the amount, in moles of the excess reagent.
d) Determine which reactant will produce the least amount of ammonia.
e) Calculate the amount, in moles of H2, reacted, when the limiting reagent has been used up.
f) Give the mass of the amount of H2 that has reacted
Answers
Based on the equation of the reaction, nitrogen is the limiting reagent while hydrogen is the excess reagent.
What is the mole ratio of hydrogen to nitrogen in the formation of ammonia?Hydrogen and nitrogen combines to form ammonia ina mole ratio of 3 : 1 as shown by the equation of the reaction below:
N2 + 3H2 -- 2NH3The number of moles of the reactants in 14g of Nitrogen gas and 8.0g of hydrogen is calculated as follows:
Moles = mass/molar massMolar mass of N_{2} = 14.0 g
Molar mass of H_{2} = 2.0 g
Moles of N_{2} = 14/14.0 = 1 mole
Moles of H_{2} = 8/2.0 = 4 moles
Based on the data above:
The limiting reagent is nitrogen gas as it will be used up while hydrogen will be left over.The moles of nitrogen is 1 moleHydrogen is the excess reagent and 1 mole will be left over 3 moles of hydrogen will react with 1 mole of the nitrogen gas mass of 3 moles of hydrogen is 3 × 2.0 g = 6.0gTherefore, the limiting reagent is nitrogen while hydrogen is the excess reagent.
Learn more about limiting reagent at: https://brainly.com/question/24945784
8) If you apply a force of 50N to an object, but the object doesn't move,
how much WORK has been accomplished? Explain.
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0 J
Work = Force * Displacement
Since displacement is 0 m (object isn't moving), work would also be 0.
4. The students predict that the reaction will release a lot of energy. What question could help
provide support for the prediction?
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Take a reaction among lime water
[tex]\\ \rm\rightarrowtail CaO+H_2O=Ca(OH)_2[/tex]
If it releases heat
The question must include
+Heat sign or ∆ symbol∆H must be +veAnswer:
hope it's helpful to you
A lot of energy is not stored in biomass, but is used for biological processes instead. Which process removes waste from the body? Give the scientific term.
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We can confirm that the energy is being used for a biological process to remove waste known as excretion.
What is excretion?In biology, excretion is a metabolic process in which organisms discard waste and other by-products of metabolism. This process is essential for organisms to maintain homeostasis.
Therefore, we can confirm that energy is being used for a biological process to remove waste known as excretion.
To learn more about homeostasis visit:
https://brainly.com/question/9087319?referrer=searchResults
A gas at 42. 0°c occupies a volume of 1. 32 l. if the volume increases to 2. 24 l, what is the new temperature in kelvin?
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the answer is 534.54 kelvin
Generic Formula & Molecular Geometry of o3
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Answer:
We use the following formula as given below Use the formula below to find the lone pair on the oxygen atom of the SO3 molecule. L.P (O) = V.E (O) – N.A (S-O) Lone pair on the terminal oxygen atom in SO3 = L.P (O)
Explanation:
There is an extreme temperature difference between day and night in a desert during clear weather. However, even though the outside temperature drops greatly at night, the water in a swimming pool in the desert tends to remain warm. Use your knowledge of heat energy, specific heat, and heat transfer to explain these facts.
please help!!!!!!
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Sand has a lower heat capacity hence it heats up easily and looses heat easily. On the other hand, water has a higher heat capacity and looses heat more slowly hence it remains warm at night.
What is heat transfer?The transfer of heat refers to the movement of heat from one body to another. We should note that sand has a low specific heat capacity hence it is rapidly heated up in the day and looses heat quickly at night.
On the other hand, water has a high specific heat capacity hence it heat up slowly and also does not loose heat easily even when the surrounding temperature is much colder. As such, there is an extreme temperature difference between day and night in a desert during clear weather and the water in a swimming pool in the desert tends to remain warm even when the outside temperature drops greatly at night.
Learn more about heat transfer: https://brainly.com/question/12107378
PLS HELP ASAP ILL MARK BRAINLIEST. And this is science btw.
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Answer:Opposite
Explanation:
Please help! How many isotopes are in arsenic?
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Answer:
Arsenic (33As) has 33 known isotopes and at least 10 isomers.