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atroni [7]
3 years ago
11

Which of the following is true for the actual yield of a reaction?

Chemistry
2 answers:
ludmilkaskok [199]3 years ago
4 0

Answer:

It is always less than the theoretical yield

Explanation:

For many chemical reactions, the actual yield is usually less than the theoretical yield. This is due to possible loss in the process or inefficiency of the chemical reaction.

inna [77]3 years ago
4 0

Answer:

It is always less than the theoretical yield.

Explanation:

Theoretical yield is obtained from stoichiometry calculation of a balanced equation. Actual yield is the amount of product formed from a reaction. Percentage yield is the ratio of actual yield to the theoretical yield of a product. Percentage yield is never 100 % or greater than 100%. Therefore,  Actual yield of a product always less than the theoretical yield.

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How much heat is absorbed when 63.7 g H2O(l) at 100 degrees Celsius and 101.3kPa is converted to steam at 100
Alona [7]

Answer:

Q = 143,921 J = 143.9 kJ.

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to calculate the absorbed heat by considering this is a process involving sensible heat associated to the vaporization of water, which is isothermic and isobaric; and thus, the heat of vaporization of water, with a value of about 2259.36 J/g, is used as shown below:

Q=m*\Delta _{vap}H

Thus, we plug in the mass and the aforementioned heat of vaporization of water to obtain the following:

Q=63.7g*2259.36J/g\\\\Q=143,921J=143.9kJ

Regards!

3 0
3 years ago
Which sequence contains elements listed from most reactive<br> to least reactive?
maxonik [38]

Answer:

Transition metals, alkali metals, alkaline earth metals Transition metals - Middle of the periodic chart, only average reactivity. alkali metals - As mentioned above, very reactive. Bad choice, going from lower reactivity to higher reactivity.

Hope this answer is right!

6 0
3 years ago
Niobium-91 has a half-life of 680 years. After 2,040 years, how much niobium-91 will remain from a 300.0-g sample? 3 g 18.75 g 3
Vadim26 [7]
Amount of Niobium-91 initially
= 300/91 =3.2967mol
2040 years = 3 ×680 = 3 half-lives
therefore, amount left = 0.4121mol
mass of Niobium-91 remaining = 0.4121 ×91 =37.5g
7 0
3 years ago
Read 2 more answers
How many moles 1 gram H2SO4
Alexandra [31]

Answer:

0.0102 mole

Explanation:

Use and solve proportions for these with x as the unknown value.

4 0
3 years ago
1. If you were working for a beverage company, which molarity would you recommend, and what directions for mixing would you crea
emmasim [6.3K]

Answer: I would prepare a standard solution

Explanation: A standard solution is a solution of known concentration (molarity). This is gotten from the stock using dilution principle. (C1V1=C2V2) I would prepare a 0.1M solution of the beverage into a standard 500ml flask.

7 0
3 years ago
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