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nikdorinn [45]
3 years ago
12

A scientist should not let their research and study be influenced by _____. (can be more than one answer) ethnicity gender natio

nality religion
Chemistry
2 answers:
NikAS [45]3 years ago
8 0
I am going to say Race.
muminat3 years ago
7 0
The answer is all of the above
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Consider a different analyte for this exercise. Citric acid is found in many fruits and fruit juices. Sodium hydroxide (NaOH) is
Tpy6a [65]

Answer:

(a) 1:3

(b)

mmol of OH⁻ = 1.893 mmol

mmol of H₃C₆H₅O₇: 0.6310 mmol

mass of H₃C₆H₅O₇: 0.1212 g

mass % of H₃C₆H₅O₇ in orange juice: 1.37%

molarity of H₃C₆H₅O₇ in orange juice: 0.0726 M

Explanation:

Let's consider the following balanced chemical equation.

H₃C₆H₅O₇ + 3 OH⁻ → C₆H₅O₇³⁻ + 3 H₂O

<em>(a) What is the stoichiometry of H₃C₆H₅O₇ to OH⁻? </em>

The molar ratio of H₃C₆H₅O₇ to OH⁻ is 1:3

<em>(b)</em>

<em>mmol of OH⁻: ?</em>

24.61mL.\frac{0.0769mol}{L} =1.893mmol

<em>mmol of H₃C₆H₅O₇: ?</em>

1.893mmolOH^{-} .\frac{1molH_{3}C_{6}H_{5}O_{7}}{3molOH^{-} } =0.6310mmolH_{3}C_{6}H_{5}O_{7}

<em>mass of H₃C₆H₅O₇: ?</em>

The molar mass of the citric acid is 192.1 g/mol.

0.6310 \times 10^{-3} molH_{3}C_{6}H_{5}O_{7}.\frac{192.1gH_{3}C_{6}H_{5}O_{7}}{1molH_{3}C_{6}H_{5}O_{7}} =0.1212gH_{3}C_{6}H_{5}O_{7}

<em>mass % of H₃C₆H₅O₇ in orange juice: ?</em>

\frac{0.1212g}{8.83g} \times 100\%=1.37\%

<em>molarity of H₃C₆H₅O₇ in orange juice: ?</em>

M=\frac{0.6310 \times 10^{-3} molH_{3}C_{6}H_{5}O_{7}}{8.69 \times 10^{-3} L} =0.0726M

7 0
3 years ago
It takes 15.0 seconds to run 100.0 meters if you run .0500 how many meters will you run
Alecsey [184]

Answer:

150 seconds

Explanation:

5 0
3 years ago
What are its electron-pair and molecular geometries? What is the hybridization of the nitrogen atom? What orbitals on and overla
jok3333 [9.3K]

Answer:

Electron-pair geometry: tetrahedral

Molecular geometry: trigonal pyramidal

Hybridization: sp³

sp³ - 4 p

Explanation:

There is some info missing. I think this is the original question.

<em>For NBr₃, What are its electron-pair and molecular geometries? What is the hybridization of the nitrogen atom? What orbitals on N and Br overlap to form bonds between these elements?</em>

<em>The N-Br bonds are formed by the overlap of the  ___ hybrid orbitals on nitrogen with ___ orbitals on Br.</em>

<em />

Nitrogen is a central atom surrounded by 4 electron domains. According to VESPR, the corresponding electron-pair geometry is tetrahedral.

Of these 4 electron domains, 3 represent covalent bonds with Br and 1 lone pair. According to VESPR, the corresponding molecular geometry is trigonal pyramidal.

In the nitrogen atom, 1 s orbital and 3 p orbitals hybridize to form 4 sp³ orbitals for each of the electron domains.

The N-Br bonds are formed by the overlap of the sp³ hybrid orbitals on nitrogen with 4p orbitals on Br.

7 0
2 years ago
What process must happen before this process depicted below?
Vinil7 [7]

In glycolysis, glucose molecule is converted into pyruvate molecules .

It can't be cellular respiration because it starts always with glucose i.e glycolysis. But here it is the process after glycolysis (starting from pyruvate) and changing into lactic acid. It's an aerobic respiration called as lactic acid fermentation.

Fermentation

8 0
3 years ago
Read 2 more answers
Identifying organic compounds
Soloha48 [4]

Answer:

Is there another picture with the #'s in the boxes

Explanation:

3 0
3 years ago
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