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victus00 [196]
3 years ago
12

Please help me with 1,2,3,4,5,6 please I really need help

Chemistry
1 answer:
zhannawk [14.2K]3 years ago
6 0

Answer:

k

Explanation:

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Which phrase gives two processes scientists think move the Earth's lithospheric plates?
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Gravity acting on the edges of plates and convection in the mantle
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What instrument did thomson use to develop his theory?
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Summary. J.J. Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons.

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Thomson proposed the plum pudding model of the atom, which had negatively-charged electrons embedded within a positively-charged "soup."

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Which of the following statements best describes why electrons
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3 years ago
What is the present Ba in Ba(NO3)2?​
Ira Lisetskai [31]

Answer:

Percentage of Ba = 52.5%

Explanation:

We'll begin by calculating the molar mass of Ba(NO3)₂. This can be obtained as follow:

Molar mass of Ba(NO3)₂ = 137 + 2[14 +(16×3)]

= 137 + 2[14 + 48]

= 137 + 2[62]

= 137 + 124

= 261 g/mol

Next, we shall determine the mass of Ba in Ba(NO3)₂. This can be obtained as follow:

Mass of Ba in Ba(NO3)₂ = 137 g/mol

Finally, we shall determine the percentage of Ba in Ba(NO3)₂. This can be obtained as follow:

Percentage of Ba = mass of Ba / mass of Ba(NO3)₂ × 100

Percentage of Ba = 137 / 261 × 100

Percentage of Ba = 13700 / 261

Percentage of Ba = 52.5%

Thus, the percentage of Ba in Ba(NO3)₂ is 52.5%

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3 years ago
Values of Ksp greater than 1.0 infer:
Tems11 [23]

Values of Ksp greater than 1.0 infer that the solid phase is relatively soluble. The answer is number 2. If Ksp is less than 1 then the solid phase is relatively insoluble.

8 0
3 years ago
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