2 years ago

Which of the following ways can be used to measure reaction rate?

Chemistry

1 answer:

Vsevolod [243]2 years ago

5 0

Answer:

the answer is b;

the rate of reaction can be found by measuring the amount of product formed in a certain period of time.

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How many moles are their in 62.0 grams of CO2

Advocard [28]

6.2 grams of CO2 = 1.408786739226764 moles

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3 years ago

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Draw the structure of a compound with the molecular formula C9H10O2 that exhibits the following spectral data. (a) IR: 3005 cm-1

Nikitich [7]

Answer:

The answer is 3-Phenylpropanoic acid (see attached structure)

Explanation:

From spectral data:

3005 cm-1 ⇒ carboxylic acid (broad band)

1670 cm-1 ⇒ C=C

1603 cm-1 ⇒ Aromatic C-C bond

H NMR frequency at 2.6 ppm, singlet, ⇒ OH with no surrounding protons, possible deshielding (clearer investigation of spectrum would be expedient).

Hence, our C9H10O2 compound has an aromatic ring and carboxylic acid group attached to it.

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4 years ago

An atom has a mass number of 43 and an atomic number of 23. How many protons does it have?

Airida [17]

Answer:

Explanation:

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3 years ago

Krupton (Kr) is a A. Gas B. Metal C. Non of these D. Metalloid

Katarina [22]

B is gas

The chemical element krypton is classed as a noble gas and a nonmetal.

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3 0

3 years ago

Type the correct answer in the box. a pharmacist works with a 1.75 m solution of sodium bromide (nabr) and water. the volume of

Elodia [21]

Answer: 147 mL

Explanation:

Given:

Molarity of the sodium bromide (NaBr) solution (M1) = 1.75 M

Volume of the solution (V1) = 84 mL

Molarity of the diluted NaBr solution (M2) = 1 M

Using the dilution formula to solve for V2:

$\begin{gathered}M_{1} V_{1}=M_{2} V_{2} \\V_{2}=(1.75 \mathrm{M} \times 84 \mathrm{~mL}) / 1 \mathrm{M} \\V_{2}=147 \mathrm{~mL}\end{gathered}$

Therefore, the new volume of the solution is 147 mL

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2 years ago