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4vir4ik [10]
3 years ago
9

What does each of the facts shown above tell you about the element on the periodic table

Chemistry
1 answer:
olasank [31]3 years ago
7 0
<span>The atomic number of a chemical element (also known as its proton number) is the number of protons found in the nucleus of an atom of that element, It can be used to determining which group the element belongs to in the periodic table. Therefore, atomic number is the correct answer.</span>
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Aluminum has a density of 2.7g/cm how much space in cm 3 would 100 grams of aluminum occupy?
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Answer:

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Explanation:

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3 years ago
What is the charge and location of a neutron?
Whitepunk [10]

Answer:

There is no charge and it is in nucleus

Explanation:

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4 years ago
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10. Define experiment.
Ber [7]

Answer:

to make a discovery, test a hypothesis, or demonstrate a known fact.

Explanation:

perform a scientific procedure, especially in a laboratory, to determine something.

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3 years ago
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What types of R groups can exist in amino acids? (Choose all that apply)
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acidic,non polar,basic

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7 0
3 years ago
A quantity of 0.0250 mol of a gas initially at 0.050 L and 19.0°C undergoes a constant-temperature expansion against a constant
KiRa [710]

Answer:

V_2=2.995L\\\\W=248.5J

Explanation:

Hello,

In this case, for us to compute the final volume we apply the Boyle's law that analyzes the pressure-volume temperature as an inversely proportional relationship:

P_1V_1=P_2V_2

So we solve for V_2 by firstly computing the initial pressure:

P_1=\frac{nRT}{V_1}=\frac{0.025mol*0.082\frac{atm*L}{mol*K}*(19+273.15)K}{0.050L}  =11.98atm

V_2=\frac{P_1V_1}{P_2}=\frac{11.98atm*0.050L}{0.200atm}\\ \\V_2=2.995L

Finally, we can compute the work by using the following formula:

W=nRTln(\frac{V_2}{V_1} )=0.025mol*8.314\frac{J}{mol*K}*(19.0+273.15)K*ln(\frac{2.995L}{0.050L}) \\\\W=248.5J

Best regards.

4 0
3 years ago
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