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Marina86 [1]
11 months ago
5

a chemical engineer has determined by measurements that there are moles of carbon in a sample of nickel tetracarbonyl. how many

moles of oxygen are in the sample? round your answer to significant digits.
Chemistry
1 answer:
Lapatulllka [165]11 months ago
8 0

A chemical engineer has determined by measurements that there are moles of carbon in a sample of nickel tetracarbonyl the no. moles of oxygen are in the sample are 7.0 moles.

  • The chemical method of nickel tetracarbonyl is Ni(CO)4.
  • We can see that there are four carbon atoms and four oxygen atoms which collectively shape four carbonyl (CO) groups.
  • Therefore the mole ratio of C to O is 1:1.
  • Let us use this as a conversion factor to locate moles of oxygen.
  • We have 7.zero moles of carbon withinside the method.
  • The moles of O may be calculated as,
  • 7molC x (1molO)/(1molC) = 7molO.
  • There are 7.zero moles of oxygen within side the method.

Read more about moles :

brainly.com/question/15356425

#SPJ4

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Answer = 1.selective permeability
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2 years ago
Refer to the periodic table tool and write the electron configurations of the following elements in both long and short terms
ahrayia [7]

Answer:-

Carbon

[He] 2s2 2p2

1s2 2s2 2p2.

potassium

[Ar] 4s1.

1s2 2s2 2p6 3s2 3p6 4s1

Explanation:-

For writing the short form of the electronic configuration we look for the nearest noble gas with atomic number less than the element in question. We subtract the atomic number of that noble gas from the atomic number of the element in question.

The extra electrons we then assign normally starting with using the row after the noble gas ends. We write the name of that noble gas in [brackets] and then write the electronic configuration.

For carbon with Z = 6 the nearest noble gas is Helium. It has the atomic number 2. Subtracting 6 – 2 we get 4 electrons. Helium lies in 1st row. Starting with 2, we get 2s2 2p2.

So the short term electronic configuration is [He] 2s2 2p2

Similarly, for potassium with Z = 19 the nearest noble gas is Argon. It has the atomic number 18. Subtracting 19-18 we get 1 electron. Argon lies in 3rd row. Starting with 4, we get 4s1.

So the short electronic configuration is [Ar] 4s1.

For long term electronic configuration we must write the electronic configuration of the noble gas as well.

So for Carbon it is 1s2 2s2 2p2.

For potassium it is 1s2 2s2 2p6 3s2 3p6 4s1

5 0
2 years ago
If hydrochloric acid is obtained commercially at a concentration of 12.1M, how many milliliters of 12.1M HCl(aq) must be used to
rewona [7]

Answer:

V_1=82.6mL

Explanation:

Hello there!

In this case, according to this question, we will need to deal with this dilution problem, because it is asking for the volume of a 12.1-M stock solution of HCl. In such a way, we can use the following equation, under the assumption of no change in the number of moles in the solution:

M_2V_2=M_1V_1

Thus, we solve for the initial volume, V1, as shown below:

V_1=\frac{M_2V_2}{M_1}

And plug in the initial concentration and final concentration and volume to obtain:

V_1=\frac{2000mL*0.500M}{12.1M}\\\\V_1=82.6mL

Regards!

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3 years ago
Does a hypothesis have to be true for a experiment to be valid?
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Answer:

no

Explanation:

because hypothesis are just what we thing is gonna happen it doesn't have to be true

sorry if im wrong

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2 years ago
An atom with one valence electron combines with an atom with seven valence electrons. What is likely to happen to the atom with
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It will likely give up its valence electron to the other compound, forming stable octets on each of the newly formed ions. These ions have opposing charges, and tend to form strong ionic lattices. A good example of this is NaCl, which contains Na+ ions that have given up their one valence electron and Cl- ions which have accepted that electron.
Hope this helps!
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3 years ago
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