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erastovalidia [21]
3 years ago
9

During which stage of life is a human most dependent on others?

Chemistry
2 answers:
AfilCa [17]3 years ago
7 0

Erm, I think when they are little. When they are just born.

JulijaS [17]3 years ago
5 0

Answer:

oral stage

(the stage where humans are still babies)

hope this helps!

please mark brainiest <3

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mastering biology ch 3 Water molecules have a polarity, which allows them to be electrically attracted to other water molecules
aniked [119]

Answer:

The answer to your question is: hydrogen bonding

Explanation:

Hydrogen bonding is a kind of interaction dipole-dipole, that means that 2 molecules attract each other because the have partial charges.

In the picture we can see 4 molecules of water, red circles are oxygens and white circles are hydrogens. In this bonding, Oxygen due to its size, and atomic number is more electronegative than hydrogen, then in water molecule is formed a partial negative charge in oxygen and a partial positive charge in hydrogen.

Finally, because of this partial charge, one oxygen can bond to one hydrogen of another molecule.

7 0
3 years ago
An aqueous solution contains 0.397 M ammonia. Calculate the pH of the solution after the addition of 4.63 x 10-2 moles of perchl
SSSSS [86.1K]

Answer:

9.308

Explanation:

The computation of the pH of the given solution is shown below:

But before we need to determine the HI molarity which is

Molarity\ of\ HI = \frac{moles}{volume \ in\ L}

= \frac{4.63\times10^{-2}}{0.250}

= 0.1852  M

Now

As we know that

NH_3 + HI = NH_4I

So,

NH_4I = HI = 0.1852 M

Now the molarity of NH_3 left is

= 0.397 - 0.1852

= 0.2118

pOH = pKb + log (\frac{NH_4I}{NH_3})

= 4.75 + log(\frac{0.1852}{0.2118})

= 4.692

Now as we know that

pH = 14 - pOH

= 14 - pOH

= 14 - 4.692

= 9.308

We simply applied the above equations

5 0
3 years ago
How many moles of aluminum are in 4.35 moles of al2si4o10(OH)2
Gnoma [55]

Answer:

8.7 mol Al

Explanation:

You have the compound Al₂Si₄O₁₀(OH)₂.  Within the compound, you have atoms.  You can tell how many atoms there are by looking at the subscript.  You have 2 aluminum atoms, giving you 8.7 moles of aluminum.

4.35 × 2 = 8.7

6 0
3 years ago
Whats the answer? please help me​
dybincka [34]
Answer C
I could be wrong
Explanation
8 0
3 years ago
What atom has 2 electrons, 6 protons and 7 neutrons
Deffense [45]

Answer:

Carbon atoms with 7 neutrons have an atomic mass of 13 (6 protons + 7 neutrons = 13). These atoms are the isotope called carbon-13.Jul

7 0
3 years ago
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