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valkas [14]
1 year ago
8

Express in scientific notation. Remember, M must be a number such that 1 - 0.000000000000013= ____

Chemistry
1 answer:
Alex1 year ago
5 0

Answer:

A) 1.3 * 10^-13

Explanation:

0.000000000000013 = 1.3 * 10^-13

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Name the compound formed when a copper cation has a 2+ charge combined with a bromine anion that has a 1- charge.
Rashid [163]

Answer: The compound is called copper (II) bromide or cupric bromide

Explanation:

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2 years ago
Most of the volume of a gas is
Vesna [10]

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One mole of any gas has a volume of 24 dm3 or 24,000 cm3 at rtp (room temperature and pressure).

Explanation:

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3 years ago
Why is the composition of the vapor different from the composition of the solution?
BaLLatris [955]
If there is solution with nonvolatile solute (<span>substance that does not readily </span>evaporate<span> into a </span>gas) <span>only the pure vapor of the solvent is present above the solution and solute stays in solution and do not enters vapor above solution. This is because nonvolatile solute has slow rate of evaporation and low vapore pressure.
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8 0
3 years ago
Two isotopes of hypothetical element X exist with abundances of 30.00% 100X and 70.00% 101X. What is the approximate atomic mass
Rasek [7]

Answer:

C. 100.7 amu

Explanation:

Isotopes of an element are atoms of an element with the same atomic number but different atomic masses. Each atomic mass of an isotope is known as an isotopic mass. An element that exhibits isotope, that is, that have two or more isotopes has a relative atomic mass that is not a whole number.

Relative atomic mass of X is the sum of the products of the relative abundances of each isotope and its isotopic mass.

For Isotope ¹⁰⁰X: 30% × 100 = 30 amu

For Isotope ¹⁰¹X: 70% × 101 = 70.7 amu

Relative atomic mass of X = (30 + 70.7) amu = 100.7 amu

Therefore, the approximate atomic mass of X is 100.7 amu

4 0
2 years ago
9.
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Explanation:

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