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topjm [15]
3 years ago
12

PLEASE HELP!! I GIVE BRAINLIEST

Chemistry
1 answer:
marshall27 [118]3 years ago
7 0

Answer:

1)C 2)B 3)D

Explanation:

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A compound that allows for communication between one cell and the next is called _________
-Dominant- [34]
<h2>Answer:</h2>

The compound is known as the neurotransmitter or messenger chemicals.

<h3>Explanation:</h3>
  • Neurotransmitters are the chemicals a type of messenger which is used to transmit information from one cell to the next cell.
  • Some hormones are also known as messenger chemicals.
  • The nerve cells are not linked to each other while they are separated from each other by a space known as synapses.
  • The electric potential signal is converted into chemical signal by the release of neurotransmitters.
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3 years ago
A process used to gain knowledge through observation and investigation is?
Shkiper50 [21]

Answer:matter

Explanation:

matter

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3 years ago
What is the ratio of the magenta phenolphthalein concentration to the colorless phenolphthalein concentration ([magenta phenolph
lilavasa [31]

Answer:

\frac{[magenta\ phenolphthalein]}{[colorless\ phenolphthalein]}=31.62

Explanation:

Considering the Henderson- Hasselbalch equation for the calculation of the pH of the buffer solution as:

pH=pKa+\log\frac{[base]}{[acid]}

Where Ka is the dissociation constant of the acid.

pKa of phenolphthalein = 9.40

pH = 10.9

So,

10.9=9.40+\log\frac{[magenta\ phenolphthalein]}{[colorless\ phenolphthalein]}

\frac{[magenta\ phenolphthalein]}{[colorless\ phenolphthalein]}=31.62

4 0
3 years ago
How Many Atoms Are In 356.13 Grams Of Sn
s344n2d4d5 [400]

<span>There are three atoms of Sn (Stannous or Tin) in</span> 356.13 g of Sn.

<span>One atom of Sn has the atomic mass (m</span>ₐ<span>) of </span>118,71u which means:

356.13/118.71=3 atoms of Sn

The mass number (symbol A) also called atomic mass number or nucleon number is the total number of protons and neutrons in an atomic nucleus. It determines the atomic mass of atoms and it is in the periodic table.

8 0
2 years ago
What is the balanced symbol equation for magnesium chloride + sodium carbonate --&gt; magnesium carbonate + sodium chloride
Semenov [28]

Answer:

MgCl₂+ Na₂CO₃ ==> MgCO₃ + NaCl

From a quick observation

You see that the right hand side of the eqn is deficient of Sodium and Chlorine

Simply Add a Coefficient of 2 to NaCl to balance it with the left.

Your answer now becomes

MgCl₂ + Na₂CO₃ ==> MgCO₃ + 2NaCl.✅

3 0
2 years ago
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