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Aleksandr-060686 [28]
3 years ago
5

Brainliest get's +30 Points!

Chemistry
1 answer:
elena55 [62]3 years ago
3 0

Answer:

Yesssssss , option two is the correct one click it buddy

Explanation:

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The total volume required to reach the endpoint of a titration required more than the 50 mL total volume of the buret. An initia
Sonja [21]

Answer:

The answer is "\bold{50.42 \pm 0.08}".

Explanation:

Overall delivered volume = [(49.06 \pm 0.05) + (1.77 \pm 0.05)]\ mL

Its blank solution without any of the required analysis  = (0.41 \pm 0.04)\ mL

Compute the volume of the endpoint as follows:  

Formula:

\text{End point volume = Total Volume delivered - volume required}

= (49.06 \pm 0.05) + (1.77 \pm 0.05) - (0.41 \pm 0.04) \\\\= (49.06 + 1.77 - 0.41) \pm  \ \ (absolute \ \  uncertainty)

therefore,

absolute uncertainty =\sqrt{(0.05)^2 + (0.05)^2 + (0.04)^2}

                                   =\sqrt{0.0025 +0.0025 +0.0016} \\ \\=\sqrt{0.0066}\\\\=0.08124\\

The Endpoint volume = (49.06+1.77-0.41)\pm (0.08124)

                                    = 50.42 \pm 0.08

Therefore, the volume of the endpoint adjusted for the blank is:

\bold { = 50.42 \pm 0.08}

3 0
4 years ago
Omg, I need help ASAP. Btw this is science.
nikdorinn [45]

Answer: B. Asexual Reproduction

Explanation:

Vascular is typically only spores, sexual reproduction does not seem to fit this, and fertilization could be a key but most likely not. I am sorry if this is wrong.

4 0
3 years ago
Scientists use bacteria to make medicines,<br><br> o True<br> o False
sladkih [1.3K]

Answer:

true they do I yes they do

6 0
3 years ago
Why wouldn’t a tennis player with two sneakers “bond” to any other tennis players? Why wouldn’t a helium atom with two electrons
aleksklad [387]

Answer:

Explained below.

Explanation:

A tennis player with two sneakers wouldn't bond to any other tennis player because he is already stable and complete with the 2 and doesn't need another players assistance to make him stand well.

However, helium atom with two electrons wouldn't bond to any other atoms because it is stable. This stability arises from the fact that it has two protons and 2 electrons, of which the 2 electrons completely fill its valence shell/outer most shell to make it neutral.

8 0
4 years ago
What is the approximate value of the equilibrium constant, k n, for the neutralization of acetic acid withsodium hydroxide, show
NikAS [45]
You are given the neutralization of acetic acid with sodium hydroxide. Also, you are given the k for acetic acid, which is 1.8 x 10⁻⁵. You are asked to find the<span> approximate value of the equilibrium constant, kn, for the neutralization. We will have a reaction of both acetic acid and sodium hydroxide.

CH</span>₃COOH + NaOH → CH₃COONa + H₂O
which comes from
CH₃COOH → CH₃COO⁻ + H⁺
H⁺ + OH⁻ → H₂O<span>

</span>The k for water is always 1.0 x 10¹⁴. The Ksp for the reaction will be
<span>
Ksp = [</span>CH₃COOH][H₂O]
Ksp = (1.8 x 10⁻⁵)(1.0 x 10¹⁴)
<span>Ksp = 1.8 x 10</span>⁹
5 0
3 years ago
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