CHEMISTRY HIGH SCHOOL

Which of the following atoms would have the smallest atomic radius?

Answers

Answer 1

Answer:

Answer:

Lithuim is the smallest

Explanation:

i hope this helps!!

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Which term best defines a saturated hydrocarbon with single bonds only?a. alkane
b. isomer
c. alkene
d. alkyne

Answers

the answer is A "alkane"

Answer:

$\large \boxed{\mathrm{A. \ alkane}}$

Explanation:

Alkanes are saturated hydrocarbons with only single bonds of carbon and hydrogen.

Which solution has the greatest buffer capacity?

Answers

There isn't any scale that directly measures buffering capacity, but as a rule, buffering capacity increases as the concentrations of the acid/base and its conjugate in solution increases. Therefore, the solution with greatest buffering capacity will have the highest concentrations of acid/base pairs.

Buffer capacity is defined as the capacity of a buffer to resist changes in pH upon addition of an acid or a base. The buffer capacity is high when the concentration of the acid and its conjugate base is high, and the pH of the solution is near the pKa value of the weak acid.

The greater the buffer capacity, the better it can resist pH changes upon addition of an acid or base. The buffer capacity of a solution is highest when the pH is near the pKa value of the weak acid.

A buffer is a solution that has the ability to resist changes in pH upon the addition of an acid or base. The buffer capacity is highest when the pH of the buffer is close to the pKa of the weak acid component in the buffer. Therefore, the buffer capacity is the highest when the pH is equal to the pKa value of the weak acid.

Therefore, the solution with the greatest buffer capacity is the one with the highest concentration of both the weak acid and its conjugate base, which can resist the changes in pH with the addition of an acid or base.

Answers

Answer:- 0.80 moles

Solution:- Number of atoms of tungsten are given and we are asked to calculate the moles of tungsten atoms. So, it is a atom to mole conversion and for this we use the Avogadro number.

Number of atoms are divided by Avogadro number to get the number of moles.

Avogadro number is $6.022*10^2^3$ . Given number of atoms is $4.8*10^2^3$ . let's divide it by Avogadro number.

$4.8*10^2^3atoms((1mol)/(6.022*10^2^3atoms))$

Numerator and denominator has equal exponent so it is canceled. So, we only need to divide 4.8 by 6.022 and round the answer to two sig figs as given number of atoms has only two sig figs.

$4.8((1mol)/(6.022))$

= 0.80 moles

Hence, there are 0.80 moles of tungsten atoms in given number of atoms.

Which terms are used to identify pure substances?(1) an element and a mixture
(2) an element and a compound
(3) a solution and a mixture
(4) a solution and a compound

Answers

Answer is: (2) an element and a compound.

Pure substance is made of only one type of atom (element) or only one type of molecule (compound), mixtures and solutions are made from two or more types of pure substances.

Elements (for example copper, iron, sulfur) and compounds (water, sodium chloride) have definite and constant composition with distinct chemical properties.

Pure substances can be separated chemically, not physically, that is difference between pure substances and mixtures.

What Is Ethane? Can you help me?

Answers

Answer: an alkane

Explanation:apex

Ethane is gas used as fuel: a colorless odorless gas that is highly flammable.

I hope this answered your question

NEED HELP!!!!!!1s² 2s² 2p⁶ 3s² 3p⁵ is the electron configuration for which element? *

fluorine
chlorine
sulfur
bromine

Answers

1s² 2s² 2p⁶ 3s² 3p⁵ is the electron configuration for B)chlorine.

What are the 4 types of electron configuration?

The 4 special types of orbitals (s,p,d, and f) have distinctive shapes, and one orbital can hold a most of twoelectrons. The p, d, and f orbitals have different sublevels, accordingly can keep extraelectrons. As stated, the electronconfiguration of each detail is precise to its position on the periodic table.

In atomic physics and quantumchemistry, the electronconfiguration is the distribution of electrons of an atom or molecule (or different bodily structure) in atomic or molecularorbitals.

Learn more about electron configuration here: brainly.com/question/11316046

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Chlorine.

If you search Google images for "Aufbau principle periodic table," you'll find some handy diagrams that will make it much easier to determine an element based on its electron configuration. Determine the number of electrons in the last part of the configuration (in this case, 5), locate that group on the Aufbau periodic table diagram, then count that number from left to right within that group. In this case, within the "3p" portion of the Periodic table, count to 5 and you'll find Chlorine as the answer.

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