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nikdorinn [45]
3 years ago
13

J.J. Thomson's plum pudding model of the atom followed the discovery of

Chemistry
2 answers:
bixtya [17]3 years ago
6 0

Answer:

A

Explanation:

Got it right:)

Rama09 [41]3 years ago
3 0
The answer is A i think from the options though the answers are worded a bit weird
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A gas sample occupies 2.1 L at a pressure of 101 kPa.
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Explanation:

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3 years ago
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The volume of a sample gas, initially at 25 C and 158 mL, increased to 450 mL. What is the final temperature of the sample of ga
Rashid [163]

Answer:

Final temperature of the gas is  576 ^{0}\textrm{C}.

Explanation:

As the amount of gas and pressure of the gas remains constant therefore in accordance with Charles's law:

                                       \frac{V_{1}}{T_{1}}=\frac{V_{2}}{T_{2}}

where V_{1} and V_{2} are volume of gas at T_{1} and T_{2} temperature (in kelvin scale) respectively.

Here V_{1}=158mL , T_{1}=(273+25)K=298K and V_{2}=450mL

So  T_{2}=\frac{V_{2}T_{1}}{V_{1}}=\frac{(450mL)\times (298K)}{(158mL)}=849K 

849 K = (849-273) ^{0}\textrm{C} = 576 ^{0}\textrm{C}

So final temperature of the gas is  576 ^{0}\textrm{C}.

3 0
3 years ago
2.38g of black copper(iii) oxide is completely reduced to by hydrogen to give copper and water. What are the number of atoms of
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Explanation:

here is the answer bae. Feel free to ask for more

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Which of the following statements about minerals and ores is true?
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