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denis23 [38]
3 years ago
9

Calculate the mass in grams of 1.13 x 102 molecules of propane. The chemical formula for propane is C3H8.

Chemistry
1 answer:
g100num [7]3 years ago
3 0
Moles = (6.74*10^23)/(6.02*10^23) =1.119 moles

1.119*44.09=49.36g
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In a titration of 0.35 M HCl and 0.35 M NaOH, how much NaOH should be added to 45.0 ml of HCl to completely neutralize the acid?
Bezzdna [24]
It would be the same amount. So, 45 ml of NaOH is required to be added to the 45 ml of HCI to neutralize the acid fully. Here is a brief calculation:

Firstly, here is your formula: M(HCI) x V(HCI) = M(NaOh) x V(NaOH) 
With the values put in: 0.35 x 45 = 0.35 x V(NaOH) 
= 45 ml. 
There is 45 ml of V(NaOH)

Let me know if you need anything else. :)

           - Dotz
6 0
3 years ago
What is the atomic mass of an atom that has 6 protons, 6 neutrons, and 6 electrons? A) 6 B) 8 C) + 1 D) 12 E) 18
Oksana_A [137]

<u>Answer:</u> The correct answer is Option D.

<u>Explanation:</u>

Atomic mass of an atom is defined as the sum of number of neutrons and number of protons that are present in an atom. It is represented as 'A'.

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Number of protons = 6

Number of neutrons = 6

Number of electrons = 6

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Hence, the correct answer is Option D.

6 0
3 years ago
When two hydrogen atoms combine with one oxygen atom, what is the result?
vitfil [10]

Answer:

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Explanation:

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4 0
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MaRussiya [10]
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3 years ago
8. __H2 + __O2-&gt; __H2O
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Anser:

Explanation:

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