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3 years ago

What are at least 6 compounds of potassium ?

Chemistry

2 answers:

Pavlova-9 [17]3 years ago

7 0

Answer:

Chloride CL, Potassium hydroxide KOH, Potassium chloride KCI, Potassium nitrate KNO3, Potassium carbonate K2CO3, Sulfate SO²⁻ ₄

Explanation:

Sergeu [11.5K]3 years ago

3 0

Answer:

nitrate, carbonate, chloride, bromide, cyanide, and sulfate.

Explanation:

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What is the difference between hot and cold atoms?

lesya [120]

In hot water the molecules move faster versus In cold water they move slower (hope that helps)

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3 years ago

5000kg of ammonium nitrate per square kilometer of cornfield per year. how much nitric acid would be needed to make the fertiliz

Serggg [28]

$NH_3+HNO_3-> NH_4NO_3$

1 mole of nitric acid produce 1 mole of ammonium nitrate.

moles in 5000 kg of ammonium nitrate :

$n=\dfrac{5000\times 1000}{80}\\\\n=62500\ moles$ ( molecular mass of ammonium nitrate is 80 gm/mol )

So, number of moles of nitric acid required are also 62500 moles.

Mass of 62500 moles of nitric acid :

$mass = 62500\times 63 \\\\mass = 3937500\ gram\\\\mass = 393.75\ kg$

Hence, this is the required solution.

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3 years ago

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jenyasd209 [6]

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2 years ago

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MrRa [10]

Explanation:

उत्तर : गुरुत्वाकर्षण का सार्वत्रिक नियम :

इस विश्व का प्रत्येक पिंड दूसरे पिंड को एक बल से अपनी ओर आकर्षित करता है जो दोनों पिंडों के द्रव्यमानों के गुणनफल के समानुपाती होता है तथा उनके बीच की दूरी के वर्ग के व्युत्क्रमानुपाती होता

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3 years ago

Which of the following statements about nuclear reactions is true?

Anit [1.1K]

Answer: They follow Einstein's equation, which allows for the conversion of mass to energy.

The statement that is true about nuclear reactions is that they follow Einsteins equation which allows the conversion of mass to energy.

Explanation:

Einstein’s mass-energy equation gives the idea that energy and mass are two inter-convertible forms of the same thing. This equation clearly answers the question about the large amount of energy produced by produced in nuclear reaction even though they don’t involve very heavy atoms. It is given by

$E=mc^2$

Energy released by a mass is equal to mass times the square of speed of light c. 

Value of speed of light $c=3 \times 10^8 .$ 

 $c^2=9 \times 10^1^6$ which is a large value.

Thus high amount of energy can be produced by even a small mass. It is the mass of the reacting species in a nuclear reaction that gets converted to energy and the sum of mass and energy in the overall reaction is always conserved. 

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4 years ago