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jok3333 [9.3K]
3 years ago
13

The ______ covers about 3/4 of the earth's surface

Chemistry
1 answer:
olga2289 [7]3 years ago
6 0
The answer is hydrosphere
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How many moles of a solute is contained in 500mL of a 2.5 M solution?
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100M

Explanation:

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Which of the following atoms has the highest electronegativity?
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A. Chlorine is the most electronegative element out of the possible choices. Generally (though not 100% of the time) electronegativity increases as you go further left and up the periodic table.



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3 years ago
2. Given the unbalanced equation:
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2 Na + 2 H2O → 2 NaOH + H2 (balanced equation)
The answer would be 2, since 2 in the coefficient of both Na and NaOH
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3 years ago
A cooling curve has two flat lines, or plateaus. What does the plateau at the higher temperature represent?
blagie [28]

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It is in the state of "thermal arrest"

Explanation:

The temperature stays constant during the phase change process . This is because the matter has more internal energy and heat has to be taken away for the solidification process to begin. The energy that is required for a phase change is know as latent heat (which is the energy released or absorbed by a body during a thermodynamic process).

5 0
3 years ago
Read 2 more answers
What volume of hydrogen will be produced at STP by the reaction of 67.3 g of tin with excess water according to the following re
VikaD [51]

Answer:

Sn + 2H2O ==> Sn(OH)2 + 2H2

67.3 g Sn x 1 mol/119 g x 2 mol H2/mol Sn x 22.4 L/mole = answer in liters

Explanation:

Sn + 2H2O ==> Sn(OH)2 + 2H2

67.3 g Sn x 1 mol/119 g x 2 mol H2/mol Sn x 22.4 L/mole = answer in liters

5 0
3 years ago
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