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3 years ago

The variables _ and __ affect the gravitational force between objects.

Chemistry

2 answers:

olchik [2.2K]3 years ago

7 0

I took the USA Test Prep and it is C

anastassius [24]3 years ago

5 0

I think the answer is A

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What type of chemist studies how materials conduct electricity?

e-lub [12.9K]

Explanation:

The study of interaction between the chemical substances is known as chemistry and the person who does this study is called a chemical scientist. Everything around us is made up of matter and the interaction between this matters for one or different substances.

Conduits lead electrical flow in all respects effectively as a result of their free electrons. Separators restrict electrical flow and make poor transmitters. Some basic channels are copper, aluminium, gold, and silver. Some regular encasing are glass, air, plastic, elastic, and wood.

3 0

2 years ago

Read 2 more answers

To indicate the pH of a substance, one can use a dye that is both an acid and that appears as different colors in its protonated

PIT_PIT [208]

Answer:

<em>The pH of the solution is 7.8</em>

Explanation:

The concentration of the solution is 0.001M and the dye could be in its protonated and deprotonated forms. If the concentration of the protonated form [HA] is 0.0002 M the concentration of the deprotonated form will be the subtraction between the concentration of the bye and the concentration of the protonated form:

[A-] = 0.001M - 0.0002M = 0.0008M

Also, the Henderson-Hasselbalch equation is

$pH = pKa + Log \frac{[A^{-}]}{[HA]}$

this equation shows the dependency between the pH of the solution, the pKa and the concentration of the protonated and deprotonated forms. Thus, replacing in the equation

$pH = 7.2 + Log \frac{0.0008M}{0.0002M} = 7.8$

3 0

2 years ago

Need help <br>1/6 + 1/8 =

pogonyaev

1/6 + 1/8 = 7/24

≅ 0.2916667

6 0

3 years ago

NaOH + HCl → NaCl + H2O

bearhunter [10]

Answer:

0.00496 g H2O

Explanation:

7 0

2 years ago

How can we prevent rusting of iron??

dimaraw [331]

water plus oxygen equals rust so keep water away from the iron to prevent rusting or dry the iron off then apply alchohol to cleanse it

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3 years ago

The variables _______ and ________ affect the gravitational force between objects.

The variables _ and __ affect the gravitational force between objects.