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4 years ago

Chem Data Analysis help plzz2.6 x 10⁸ ÷ 9.0 x 10¹⁰

Chemistry

1 answer:

statuscvo [17]4 years ago

5 0

The 8 is repeating.2.8 times 10 to the power of 17

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Describe how electron arrangements are given using electron configurations.

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According to the principle, electrons fill orbitals starting at the lowest available energy states before filling higher states (e.g., 1s before 2s). The Madelung energy ordering rule: Order in which orbitals are arranged by increasing energy according to the Madelung Rule.

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3 years ago

The dissolving of a solid in a liquid occurs at the surface of the acid. True False

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The answer is true.....

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3 years ago

25) Base your answer on the information below and on your knowledge of chemistry. In a laboratory investigation, an HCl(aq) solu

Veseljchak [2.6K]

Answer:

Concentration of KOH is 0.02M

15.0 mL of a 1.0 M HCl(aq) solution is a better conductor of electricity because it is more concentrated and has greater ions in solution.

Explanation:

Equation of the reaction;

KOH(aq) + HCl(aq) ----> KCl(aq) + H2O(l)

To determine the concentration of the KOH

Concentration of acid CA= 0.010 M

Volume of acid VA= 15.0 ml

Concentration of base CB= ???

Volume of base VB= 7.5 ml

Number of moles of acid NA= 1

Number of moles of base NB= 1

From;

CAVA/CBVB= NA/NB

CAVANB = CBVBNA

CB= CAVANB/VBNA

Substituting values;

CB= 0.010 × 15.0 ×1 / 7.5 ×1

CB= 0.02 M

Therefore, the concentration of the KOH is 0.02M

15.0mL of 1.0 M HCl(aq) is a better conductor of electricity than 15.0mL of 0.010 M HCl(aq) because 15.0mL of 1.0 M HCl(aq) is more concentrated and has more ions in solution than 15.0mL of 0.010 M. Since ions are charge carriers in solution, the more the concentration of ions in solutions, the greater the conductivity of the solution. Hence the answer.

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3 years ago

1. If you need to name the alkane C7H16, which prefix and

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The name is heptane. The prefix is hept- , because the longest carbon chain contains seven carbons. The suffix is -ane, because this is the suffix used for all alkanes.

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3 years ago

Enter a balanced nuclear equation for the production of lead-212, used in the treatment of some cancers, from the beta decay of

MariettaO [177]

Answer:

$\frac{212}{81}Tl ------>\beta + \frac{212}{82}Pb$

Explanation:

Beta emission involves the conversion of a neutron to a proton, an electron and a neutrino. This leads to a reduction in the neutron-proton ratio.

During a beta emission, the mass number of the parent and daughter nuclei remain the same. The atomic number of the daughter nucleus increases by one unit above that of the parent nucleus as we can see from the equation.

Hence, the daughter nucleus is found one place after its parent in the periodic table.

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3 years ago

Chem Data Analysis help plzz2.6 x 10⁸ ÷ 9.0 x 10¹⁰​

Chem Data Analysis help plzz2.6 x 10⁸ ÷ 9.0 x 10¹⁰