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2 years ago

What is a factual statement about how nature behaves or functions?

Chemistry

2 answers:

spin [16.1K]2 years ago

7 0

I think it would be a law

Katyanochek1 [597]2 years ago

6 0

Answer:

B ;P

Explanation:

a law.

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This form of matter does not have definite shape and is not easily compressed.

ElenaW [278]

Liquid is the form of matter that does not have definite shape and is not easy to compress.

4 0

3 years ago

Consider the following mechanism: O3 => O2 + O NO + O => NO2 What is the role of O2? A. intermediate B. catalyst C. reacta

Daniel [21]

Answer:

The correct answer is option D.

Explanation:

Step 1: $O_3\rightarrow O_2+O$

Step 2: $NO+O\rightarrow NO_2$

Overall reaction can be determined by adding all the reactions of mechanism:

$O_3+NO\rightarrow O_2+NO_2$

Reactants in an overall reaction = $O_3\& NO$

Products in an overall reaction = $O_2\& NO_2$

According to question , the role of oxygen gas is product.

5 0

2 years ago

Assuming that both cases describe hydrogen‑like atoms with one electron, for which case is more energy emitted or absorbed?

Nana76 [90]

Assuming that both cases describe hydrogen‑like atoms with one electron, More energy is emitted or absorbed for case 2. The correct option is D.

<h3>What is emitting of energy, by electron?</h3>

The energy of the electron decreases as it changes levels, and emission of photons happens in the atom.

With the electron moving from a higher to a lower energy level, the photon is emitted. The photon's energy is the same as the energy lost by an electron moving to a lower energy level.

Thus, the correct option is D, More energy is emitted or absorbed for case 2.

Learn more about emitting of energy

brainly.com/question/14350185

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1 year ago

A 155.0 g piece of copper at 128 oC is dropped into 250.0 g of water at 17.9 oC. (The specific heat of copper is 0.385 J/goC.) C

Mamont248 [21]

Answer:

$T_{eq}=23.85^oC$

Explanation:

Hello,

In this case, as the copper's heat loss is gained by the water, the following energetic relationship is:

$\Delta H_{Cu}=-\Delta H_{H_2O}$

Therefore the equilibrium temperature shows up as:

$m_{Cu}Cp_{Cu}(T_{Cu}-T{eq}) = m_{H_2O}Cp_{H_2O}(T_{eq}-T_{H_2O})\\\\T_{eq}=\frac{m_{Cu}Cp_{Cu}T_{Cu}-m_{H_2O}Cp_{H_2O}T_{H_2O}}{m_{Cu}Cp_{Cu}-m_{H_2O}Cp_{H_2O}} \\$

Thus, by knowing that water's heat capacity is 4.18J/g°C, one obtains:

$T_{eq}=\frac{155.0g*0.385\frac{J}{g^oC}*128^oC+250.0g*4.18\frac{J}{g^oC}*17.9^oC}{155.0g*0.385\frac{J}{g^oC}+250.0g*4.18\frac{J}{g^oC}}=23.85^oC$

Best regards.

6 0

3 years ago

Read 2 more answers

What is velocity?

Airida [17]

A. how fast something moves in a specific direction

7 0

2 years ago