What determines the strength of a dipole-dipole force?A. The more symmetrical the molecule, the stronger the force.
B. The more hydrogen in the molecule, the stronger the force.
C. The more polar the molecules, the stronger the force.
D. The larger the atomic radius, the stronger the force.

Answers

Answer 1

Answer:

The more polar the molecules, the stronger the force. Hence, option C is correct.

What is dipole-dipole force?

Dipole-Dipole forces are the interaction between molecules of the permanent dipole. It occurs between the partially charged positive molecules and partially charged negative molecules.

Polar molecules align themselves so that the δ– end of one molecule is near the δ+ ends of other molecules.

The molecules are thus attracted to each other. Dipole-dipole forces exist between polar molecules.

The greater the polarity, the stronger the dipole-dipole forces.

Hence, option C is correct.

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Answer 2

Answer: The answer is C: the more polar the molecules, the stronger the force. Hope this helps!

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Which expression represents a reaction rate?a. time/massc. energy/timeb. number/timed. time/energy

Answers

The right answer for the question that is being asked and shown above is that: "b. number/timed." Reaction Rate refers to the speed of reaction for a reactant or product in a particular reaction is intuitively defined as how fast or slow are action takes place.

A reaction rate is typically expressed as the change in the amount of reactants or products over a certain period of time. So the option b is correct.

The rate of a chemical reaction can be measured by monitoring the number of moles or molecules of a particular substance consumed or produced per unit of time. Hence, the expression "number/time" best represents a reaction rate. For example, if we observe the formation of 5 moles of product X in 2 minutes, the reaction rate of X would be 5 moles per 2 minutes (5 moles/2 minutes). This quantitative approach allows scientists to study reaction kinetics and understand the speed at which reactions proceed, enabling the optimization and control of various chemical processes. Hence option b is correct.

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How many protons , electrons, and neutrons are contained in gallium-69?

Answers

In gallium-69, there are 31 protons, and and 31 electrons, if it is an atom of gallium-69. There are 38 neutrons as well.

Final answer:

Gallium-69, an isotope of Gallium, contains 31 protons, 31 electrons and 38 neutrons.

Explanation:

Gallium-69 is a specific isotope of the element Gallium.Gallium is the element with atomic number 31 on the periodic table. This atomic number means that a Gallium atom has 31 protons in its nucleus. Given that in a neutral atom the number of electrons equals the number of protons, we can also deduce that Gallium-69 contains 31 electrons.

The number following the name of the element, 69 in this case, is the isotope's mass number, which is the total number of protons and neutrons that an atom of that isotope contains in its nucleus. To find the number of neutrons in Gallium-69, you simply subtract the number of protons from the mass number. This yields 69 - 31 = 38. Thus, Gallium-69 has 38 neutrons.

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Which is least likely to occur after an experiment is conducted to test a hypothesis?

Answers

The question is asking to states what would likely too occur after an experiment is conducted to test a hypothesis, base on my research, if your hypothesis is correct then you can go further with the experiment but,if the experiment is incorrect then you'll have to make another hypothesis

What information do the coefficients of a balanced equation give about the reactants

Answers

The information that the coefficients of a balanced equation give about the reactants are to tell how many moles of reactants are needed and how many moles of product can be produced.

A change in which property of light will have no effect on whether or not the photoelectric effect occurs??? Frequently energy intensity and wavelength

Answers

Intensity has no affect on whether or not the photoelectric effect occurs. The determining property is frequency and since frequency and wavelength are inversely proportional, wavelength matters as well. If a frequency of light can't cause the photoelectric effect to happen, no matter what the intensity is, the light can't make it happen.

I hope this helps. Let me know in the comments if anything is unclear.

Answer: your answer is intensity

Explanation: your welcome

Which of the following isotopes would most likely be unstable and therefore radioactive?helium-3
calcium-40
molybdenum-98
mercury-194

Answers

The "mercury-194" is a kind of isotope which is untastable and radioactive.

What is isotope?

Isotopes may be members of the very same element's family but also have variable counts of neutrons despite roughly the identical count of protons.

What is radioactive?

An unstable nucleus of an atom releases energy through radiation in a process known as radioactive decay.

Therefore, the "mercury-194" is a kind of isotope which is untastable and radioactive.

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Answer: Mercury-194 is an unstable isotope and hence is radioactive.

Explanation: Mercury-194 is an isotope of mercury, having formula $_(80)^(194)\textrm{Hg}$

Number of protons in this isotope = 80

Number of neutrons in this isotope = 114

This isotope is radioactive in nature and under decay process by Electron Capture.

Electron capture reactions are the reactions in which a proton in a nucleus absorbs an electron and convert it into neutron. The resulting nucleus will have a decreased atomic number and same atomic mass.

Reaction for electron capture of mercury-194 follows:

$_(80)^(194)\textrm{Hg}+_(-1)^0\textrm{e}\rightarrow _(79)^(194)\textrm{Au}$