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UNO [17]
4 years ago
7

Is NaCH an element ? why or why not?

Chemistry
2 answers:
seraphim [82]4 years ago
6 0
I don't think it is, but I do know that NaCI is an element. Hope this helps!
Mandarinka [93]4 years ago
5 0
I believe you mean NaCI*, (sodium chloride) . Sodium Chloride is not an element, it is known as an ionic compound, reason being because it forms an ionic bond with Na and CI.
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The pH of a solution is 5.0. To a 10 ml of this
mylen [45]

Answer:

pH = 7

Explanation:

pH is defined as -log [H⁺]. In a solution of pH 5:

pH = -log [H⁺]

10^(-5) = [H⁺]

1x10⁻⁵M = [H⁺].

Then, this solution is diluted from 10mL to 1000mL (990mL of water + 10mL of the original solution). That means the solution is diluted:

1000mL / 10mL / 100 times.

If [H⁺] before dilution was 1x10⁻⁵M, after dilution will be:

1x10⁻⁵M / 100 = 1x10⁻⁷M

And pH:

pH = -log [H⁺]

pH = -log 1x10⁻⁷M

<h3>pH = 7</h3>
8 0
4 years ago
A car moving south speeds up from 10 m/s to 40 m/s in 15 seconds. What is the car’s acceleration?
faltersainse [42]
Answer is 2m/s sq because V-u /t us acceleration 40-10/15=2
6 0
3 years ago
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Which of the following atoms has the highest electronegativity?
katrin [286]
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.



3 0
3 years ago
Which of these best describes the relationship between the inner core, outer core, mantle, crust, asthenosphere, and lithosphere
torisob [31]

The question is incomplete, the complete question is;

Which of these best describes the relationship between the inner core, outer core, mantle, crust, asthenosphere, and lithosphere?

A: The coolest layers are farthest from the core.

B: The least dense layers are closest to the core.

C: The layers with the highest concentration of metals are closest to the crust.

D: The layers that remain in a molten state are closest to the crust.

Answer:

The coolest layers are farthest from the core.

Explanation:

When we talk about the internal structure of Earth, we mean the subdivisions of the solid Earth, that is, the concentric spherical layers that marks out the structure of the solid Earth.

The inner core is the innermost part of the earth's core and is known to have extremely high temperature. This high temperature steadily decreases as you approach the earth's surface.

Hence, the coolest layers are farthest from the core.

3 0
3 years ago
What is the balanced chemical equation for the combustion of sulphur
nikitadnepr [17]

Answer:

S+O2⇒SO2

Explanation:

3 0
3 years ago
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