Elements are distinguished from each other by the number of protons present in their nuclei??

[Gradpoint-Question AK-3] Acid is added to a beaker containing crushed marble. What effect does stirring this mixture have on th

Evgen [1.6K]

A : The number of particle collision increases

4 0

3 years ago

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How does atomic hydrogen torch function for cutting and welding purposes

lbvjy [14]

Explanation:

atomic hydrogen torch utilizes an electric arc whereby two closely - but not touching electrodes - result in the release of powerful electric spark as the current tries to flow through the gap. The gap is filled with hydrogen gas in an atomic hydrogen torch rather than air. The electric arch is split the hydrogen gas molecules into hydrogen atoms (some in plasma form). When the hydrogen atoms land on cooler objects like the metal being welded or cut, they region back to H₂ molecules releasing enormous amounts of heat on the surface. Surface temperatures can reach 4000 °C. The use of hydrogen gas protects the metal being welded from oxidation. Oxidation may compromise the quality of the weld.

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For more on other welding torches check out;

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3 years ago

How many significant figures are in 0.000128?

san4es73 [151]

Three sig figs, the leading zeros are not sig figs

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3 years ago

Why can water be used in the cooling system of a car? A. it always heats the car in the winter B. it helps fluctuate temperature

JulsSmile [24]

The answer is C. It resists fast temperature change

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3 years ago

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Suppose you have a sample of table salt (NaCl) that has a mass of 100.0 grams. If

IgorC [24]

Taking into account the definition of molarity, the concentration of the solution is 0.855 $\frac{moles}{liter}$ .

<h3>Definition of molarity</h3>

Molar concentration or molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:

$Molarity=\frac{number of moles}{volume}$