1 month ago

A certain mass of carbon reacts with 23.3 g of oxygen to form carbon monoxide. ________ grams of oxygen would react with that sa

me mass of carbon to form carbon dioxide, according to the law of multiple proportions.

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On a summer day, you take a road trip through Death Valley, California, in an antique car. You start out at a temperature of 21°

Anarel [2989]

<span>Only one formula should be applied, and we need to consider ideal gas conditions. This formula is: PV=nRT. Manipulate this equation for the subsequent questions to find the solutions.
1. n = PV/RT = (249*1000 Pa)(15.6 L)(1 m^3/1000 L)/(8.314 Pa-m^3/mol-K))(21+273) = 1.59 mol
2. P = nRT/V = (1.59)(8.314)(51+273)/(15.6/1000)(1000) = 274.55 kPa
3. Given that the answer in #2 surpasses 269 kPa, the tires are likely to burst. 4. Lower the pressure significantly below the threshold of 269 kPa.</span>

4 0

2 months ago

You are asked to go into the lab and prepare an acetic acid - sodium acetate buffer solution with a ph of 4.00  0.02. what mola

castortr0y [3046]

Greetings!

To tackle this question, we will apply the Henderson-Hasselbach equation and solve for the molar ratio. It’s essential to obtain the pKa value for Acetic Acid, which is listed in reference tables as 4.76:

$pH=pKa + log ( \frac{[CH_3COONa]}{[CH_3COOH]} )$

$\frac{[CH_3COOH]}{[CH_3COONa}= 10^{(pH-pKa)^{-1}}=10^{(4-4,76)^{-1}}=5,75$

Thus, the mole ratio of CH₃COOH to CH₃COONa is 5.75

Wishing you a wonderful day!

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3 months ago

For the following equilibrium: A+2B⇋C+3D If the change in concentration for B is 0.44 M, what will be the change in concentratio

Anarel [2989]

0.22 M

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3 months ago