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2 years ago

Please help!!!!!!

Chemistry

1 answer:

Valentin [98]2 years ago

4 0

Answer:

Explanation:

Look at change in concentration over time...is it increasing or decreasing? It is increasing right as you can see because it starts at 0 then increases and plataeus. What increases in a reaction, reactant or product? Products increase right cuz your reactants react with each other to make prodcuts.

At start of reaction you have no products (zero) thus this graph starts at 0. At end you have alot of product thus over time the concentration of product increases.

ABC are reactants their concentration should decrease over time

DE are products, they should increase as reaction goes on.

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13 points for this, you have to show how you did it because i need to figuer out how you did it.

andrey2020 [161]

CO + 2 H2 → CH3OH
 find # of mols in each reactants, 

152500 g CO x 1 mol CO / 28.01g CO = 5444 mol CO 

24500 g H2 x 1 mol H2 / 2.02 g H2 = 12129 mol H2 

mol ratio between CO and H2 is 1:2, which means each mol of production of CH3OH need 1 mol of CO and 2 mol of H. 

H2 is enough to produce 6064 mols of CH3OH but there are only 5444mol of CO. 

5444 mol CH3OH x molar mass of CH3OH / 1 mol CH3OH 

= 174371 g = 174.4 kg

4 0

3 years ago

How many protons do you think are dissociable from propionic acid and butyric acid? Explain your reasoning.

RSB [31]

Answer:

One

Explanation:

The formulas for the two acids are CH₃CH₂COO-H and CH₃CH₂CH₂COO-H.

The key factors to consider are the polarities of the C-H and O-H bonds.

A. C-H bonds

The difference in electronegativity is ΔEN =|2.55 - 2.20| = 0.35.

This difference of so small that we usually consider the C-H bond to be nonpolar.

It is extremely unlikely that a C-H bond will dissociate onto ions.

B. O-H bonds

The difference in electronegativity is ΔEN =|3.44 - 2.20| = 1.24.

Thus, an O-H bond is highly polar covalent — the bond has about 32 % ionic character.

It is much more likely that an O-H bond will go all the way and dissociate onto ions.

RCOOH + H₂O ⇌ RCOO⁻ + H₃O⁺

The Kₐ for an O-H bond is about 10⁴⁶ times that of a C-H bond.

Only the O-H bond of a carboxylic acid will dissociate,

7 0

3 years ago

What is the energy in joules of one photon of microwaveradiation with a wavelength 0.122m?

pentagon [3]

Answer: The energy of photon is $162.93\times 10^{-26}J$

Explanation:

The relation between energy and wavelength of light is given by Planck's equation, which is:

$E=\frac{hc}{\lambda}$

where,

E = energy of the light = ?

h = Planck's constant = $6.626\times 10^{-34}Js$

c = speed of light = $3\times 10^8m/s$

$\lambda$ = wavelength of photon = 0.122 m

Putting values in above equation, we get:

$E=\frac{(6.626\times 10^{-34}Js)\times (3\times 10^8m/s)}{0.122m}\\\\E=162.93\times 10^{-26}J$

Hence, the energy of photon is $162.93\times 10^{-26}J$

3 0

3 years ago

Rutherford's gold foil experiment provided evidence for which of the following statements?

inysia [295]

The answer is going to be the first option. What they found out is that atoms are made up of mostly space, but there is a positively charged mass in the center of the atom.

6 0

3 years ago

Read 2 more answers

Aspirin (C9H8O4) is synthesized by reacting salicylic acid (C7H6O3) with acetic anhydride (C4H6O3). The balanced equation isC7H6

prisoha [69]

Answer:

For a: The mass of acetic anhydride needed is 73.91 grams.

For b: The theoretical yield of aspirin is 130.43 grams.

Explanation:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ .....(1)