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Flauer [41]
3 years ago
14

14. A researcher Is curious to find out what effect classical music has on people's level of relaxation

Chemistry
1 answer:
Dima020 [189]3 years ago
3 0

Answer:

It should be "B"

Explanation:

:) :) :) :) :) :)

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When titrating 50.0 mL of 0.10 M H2SO4 with 0.10 M NaOH, how many mL of NaOH will you have added to reach the 1st equivalence po
Keith_Richards [23]

Answer:

50.0mL 0.10M NaOH

Explanation:

The chemical equation of H₂SO₄ with NaOH to reach the first equivalence point is:

H₂SO₄ + NaOH → HSO₄⁻ + Na⁺ + H₂O

<em>Where 1 mole of the H₂SO₄ reacts per mole of NaOH</em>

<em />

The initial moles of H₂SO₄ are:

50.0mL = 0.0500L × (0.10 mol / L) = 0.0050 moles of H₂SO₄

As 1 mole of the acid reacts per mole of NaOH, to reach the first equivalence point we need to add 0.0050 moles of NaOH. As molarity of NaOH is 0.10M, the volume that we need to add to reach 1st equivalence point is:

0.0050 moles NaOH ₓ (1L / 0.10 moles NaOH) = 0.050L NaOH 0.10M =

<h3>50.0mL 0.10M NaOH</h3>
5 0
3 years ago
What is the potential energy of a 2-kg vase sitting on a table with a height of 1<br> meter?
lisov135 [29]

"20 J" is the "Potential Energy" of "vase" on the table.  

<u>Explanation</u>:

The body possess some energy according to the position of the object that is the when an object is placed at a height it stores some energy it is called "Potential Energy".

Formula used to calculate the "Potential Energy" is m\times g \times h

Where, "m" is mass of vase is given that 2 kg, "g" is acceleration due to gravity is 10 m/s^2 and "h" is height of the object where it placed is 1 m.

Substitute the given values in the formula,

Potential energy of the vase = 2\times10\times1

Potential energy of the vase = 20 J

7 0
3 years ago
¿cual es la valencia mas probable para el sodio (Na)que se encuentra en el grupo 1 es?
igomit [66]

Answer:

Hey dude

Explanation:

Can you pls tell me which language I sthis... And tell me it in English.. Pls

6 0
3 years ago
Organic molecules are defined as chemical compounds that contain.
sleet_krkn [62]

Organic molecules can be defined as carbon-containing molecules found in living things.

<h3>What are organic molecules?</h3>

They are chemical compounds that are mainly made up of carbon atoms.

<h3>Characteristics of organic molecules</h3>

  • They derive their three-dimensional configurations primarily from their carbon skeletons.

  • A major function of these molecules in living systems is to form the structural components of cells and tissues.

Therefore, we can conclude that the organic molecules are those that come from living beings, that is, they are compounds of biological origin, which contain carbon.

Learn more about organic molecules here: brainly.com/question/3176910

3 0
2 years ago
Which context clue best helps you figure out the meaning of the word threshold?
iragen [17]
Usually look for the words that come before or after the word. Looking for these will help you find the definition of the word as you are using your context clues.
6 0
3 years ago
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