Element X has two naturally occurring isotopes. The isotope with mass 62.93 amu has a

1 answer:

3 0

Answer: the average atomic mass is 63.546. The element is copper.

Explanation:
To solve this, you multiply the mass of each isotope by its relative abundance as a decimal (for this question, it would be 62.93 * .692 and 64.93 * .308), then you add the two results together. That gives you the average atomic mass. Then, you look at the periodic table to find which element the mass matches to. If there is none, check your math.

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What rate of reaction can be measured in the dark by determining the amount of oxygen gas consumed in a period of time?

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The rate of reaction that can be measured in the dark by determining the amount of oxygen gas consumed in a period of time is the rate of respiration.

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Ionic substances are composed of ions. When you dissolve an Ionic substance in water, the ions that compose the substance together with water molecules are present in solution.

Hence, when sodium chloride is dissolved in water, sodium ions and chloride ions are released in solution.

Water has a dipole moment. Hence, the chloride ions are attracted to hydrogen (the positive end of the dipole) while sodium ions are attracted to oxygen (the negative end of the dipole).

This is how the solid is dissolved in water.

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