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olga nikolaevna [1]
4 years ago
9

Write a conclusion using the CER method. Your conclusion must include the following: - Claim: State your claim. Your claim is th

e answer to the original question: “What is the difference between a physical and a chemical change?” - Evidence & Reasoning: Provide evidence and reasoning to back up your claim. To do this, you need to discuss at least one example of a physical change and one example of a chemical change from the card sort. Using specific evidence and the definition of a physical/chemical change, describe how you knew what type of change had occurred.
Chemistry
1 answer:
Karolina [17]4 years ago
4 0
Nobody on here is going to write a entire cer for you
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What happens to the energy needed to remove an electron as the atomic number increases across a period?
lora16 [44]

Answer:

In general, the energy needed to remove an electron (the ionization energy) increases as the atomic number increases across a period.

Explanation:

Each additional proton increases the attraction between the nucleus and the electron.

Thus, it takes more energy to remove an electron as you add extra protons.

4 0
4 years ago
Please help i will mark you
Bad White [126]

Answer:

an oven cooking food

Explanation:

when it's off it has mechanical energy, when on it has electrical energy transformed to heat energy.

7 0
3 years ago
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How many oxygen (O) atoms are involved in this chemical reaction?<br><br> 2Fe(OH)3 — Fe2O3 + 3H20
kenny6666 [7]

Answer:

6 oxygen atoms

Explanation:

From the equation,

2Fe(OH)₃ → Fe₂O₃ + 3H₂O

From the reactant (left hand side) we have 2 moles of Fe(OH)₃ having (2 * 3 = 6) atoms of oxygen and decomposed to give Fe₂O₃ which contains 3 atoms of oxygen and 3 moles of water that also contains 3 atoms of oxygen.

Since the number of oxygen participating in the reaction is independent on the product (not a reversible reaction) then the total number of oxygen atoms participating in the reaction is 6

7 0
4 years ago
Devise a temperature scale, abbreviated g, for which the magnitude of the ideal gas constant is 1.00 j g–1 mol–1 .
melisa1 [442]

The value of ideal gas constant (R) in Joule is 8.314 Joule Kelvin^{-1}mol^{-1}. Now the given expression is 1.00 J. gg^{-1}.mole^{-1}. Where the g represent the temperature. Thus the abbreviated g must have the value 8.314 to satisfy the original value. Thus the temperature scale will be 1 kelvin = 8.314 g. Now 1 kelvin  = -272.15°C or in terms of abbreviation of g we can write -272.15 °C = 8.314g, or, 1°C  = (-) \frac{8.314}{272.15}=0.030g. Thus the temperature scale of the g scale is 1 kelvin (K) = 8.314g and 1°C = 0.030 g.  

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4 years ago
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How can you make that the gas' molecules move faster?
Vladimir79 [104]
With an increase in temperature, the particles gain kinetic energy and move faster. (The ANSWER is increase the temperature.)
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3 years ago
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