2 years ago

Explain the reaction of non-metals with oxygen

1 answer:

3 0

Non-metals and oxygen produce non-metal oxides. Such as sulphur dioxide and nitrogen oxide which are responsible for acidic rain. Hope this helps

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If a refrigerator is a heat pump that follows the first law of thermodynamics, how much heat was removed from food inside of the

Alchen [17]

In the first law of thermodynamics, it states when heat is converted into energy, where as the total energy in the room could transform into another but can never be created or destroyed. If you release 258J of energy in the room, 258J would also be removed from the food according to the isolating system.

Your answer would be 258J.

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2 years ago

How many grams are in 9.97 moles of Be(NO3)2?<br> Use two digits past the decimal for all values.

Simora [160]

Answer:

1,869.97 grams of Be(NO3)2

Explanation:

Be(NO3)2 = Be N2 O6

Be=9.012182g/mole

N2=28.0134g/mole

O6=96g/mole

therefore Be(NO3)2 gives you 187.56g in one mole

so 9.97 moles means there is 9.97 times more

9.97mole Be(NO3)2 * 187.56g Be(NO3)2/1mole Be(NO3)2 = 1,869.97g of Be(NO3)2

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2 years ago

Which is larger F-1 or F and why?

sveta [45]

F-1 because there is a one after it.

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2 years ago

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What type of element is chlorine?

Rzqust [24]

Halogen is the answer

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2 years ago

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A particular isotope of uranium has a nucleus with 92 protons and 143 neutrons identify this isotope in two diffrent ways

inn [45]

Isotopes can represented in two ways. In the first way, the element's symbol is used with mass number at the upper left and atomic number written on the lower left of the symbol. In the other form of representation, the isotope name is written with a dash and mass number.

Given that the isotope has 92 protons. So the atomic number is 92.

The isotope has 143 neutrons

So the mass number = Total number of protons + Neutrons

= 92 + 143 = 235

Therefore, the two ways of representing the isotope is:

1. $^{235}_{92} U$

2. Uranium-235

6 0

3 years ago