A light twig is barely floating on the surface of water. What will most likely happen to the twig if a drop of dishwashing detergent is added near it?It will float easily because soap disrupts the intermolecular forces of water.It will sink because soap increases the intermolecular forces of water.It will sink because soap disrupts the intermolecular forces of water.It will float easily because soap increases the intermolecular forces of water.

Answers

Answer 1
Answer:

Answer;

- It will sink because soap disrupts the inter-molecular forces of water

Explanation;

-A light twig is barely floating on the surface of water. if a drop of dish washing detergent is added near it then it will sink because soap disrupts the inter- molecular forces of water.

-The twig was initially floating due to the force of surface tension created by the inter-molecular forces between water molecules. When soap is added to the water, the twig will be driven to sink by the disruption of the water's surface tension. This is because soap is a surfacant that is amphipathic and thus disrupts the inter-molecular forces between water molecules that are responsible for surface tension.


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Heat, like work, is an energy transfer measured in:

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What role does evidence play in repeating experiments?

Answers

It helps affirm results of previous experiments.

The pH scale for acids and bases ranges from _____.A.) 1-7
B.) 0-14
C.) 1-14
D.) 1-12

Answers

The pH scale for acids and bases ranges from 1 - 14. The answer is letter C. The rest of the choices do not answered the question above. There are quite a few relationships between [H+] and [OH−] ions. And because there is a large range of number between 10 to 10-15 M, the pH is used. pH = -log[H+] and pOH = -log[OH−]. In aqueous solutions, [H+ ][OH- ] = 10-14. From here we can derive the values of each concentration.

 

 -log[H+ ] + -log[OH- ] = -log[10-14]

pH + pOH = 14

So pH = 14 – pOH and pOH = 14 – pH 

the correct answer is  B.) 0-14

What’s the independent and dependent variable?

Answers

Answer:

independent variable: a variable (often denoted by x ) whose variation does not depend on that of another.

dependent variable: a variable (often denoted by y ) whose value depends on that of another.

Explanation:

Permafrost soil (gelisol) is _______.a. resistant to erosion
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d. a fast developing soil

Answers

Permafrost soil (gelisol) is b. fragile. Permafrost soil is a region of the Earth's surface (ground or soil) that is at a temperature below freezing temperature. This makes it very brittle and sensitive to heat exposure, making it very fragile. This is often found in countries where the climate is very cold such as Canada etc.

Answer:

B

Explanation:

Fragile & Edge 2020

The mass number of an isotope of uranium is 238, and its atomic number is 92. Which symbol best represents this isotope of uranium?

Answers

Answer: The isotope will be represented  by symbol ^(238)_(92)U .

Solution:

The isotope of an element is represented by:

^(A)_(Z)X

X = Symbol of an element

Z = Atomic Number of that element = Total number of electrons or protons

A = atomic mass of that element = Z+ total number of neutrons

So the uranium isotope with atomic mass of 238 and atomic number of 92 will be written as:

^(238)_(92)U

Answer:

B. 238/92 U

Explanation:

Correct answer on edge 2022