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Sindrei [870]
4 years ago
14

Which of the following gases would have the greatest volume at STP?. A. 5.00 moles of H2 gas. B. 5.00 g of Rn gas. C. 6.02 × 102

3 particles of Ne gas. D. All of the above will have the same volume at STP. E. Can't determine from the information given.
Chemistry
1 answer:
Rudik [331]4 years ago
4 0
To determine the answer above, assume that the gases behave as ideal and that we only need to compare the number of moles.
For letter A. there are 5 moles of H2 gas.
For letter B, convert the amount in gas to moles by dividing it by 222 g/mol. This gives an answer of 0.0225 moles
For letter C, the given amount is Avogadro's number which corresponds to 1 mole.

Thus, the answer is letter A.
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One problem with organic chemistry is that we tend to focus on one molecule at a time, we forget that there are many, many molec
dangina [55]

Answer:

1g of bromobenzene = 3.84× 10^21 molecules

Explanation:

Molar mass of bromobenzene (C6H5Br)= 79.9+(12×6)+ 5= 156.9

156.9g(1mole) has 6.023×10^23 molecules

This implies that 1g will contain 6.023×10^23/156.9 = 3.84×10^21 molecules

7 0
4 years ago
Balance the half reaction, c5o5 2-(g) â co3 2-(aq), taking place in basic media. which answer below describes how many hydroxide
Ludmilka [50]

Answer is: 20 ions, left side.

Unbalanced half reaction: C₅O₅²⁻(g) → CO₃²⁻(aq).

1) There are 5 carbon atoms on the left side of half reaction and 1 carbon atom on right, so first add coefficient 5 in fron of carbon dioxide to balance carbon atoms: C₅O₅²⁻(g) → 5CO₃²⁻(aq).

2) Because there are more oxygen atoms on the right, add OH⁻ ions on the left side of half reaction and water on the right: OH⁻(aq) + C₅O₅²⁻(g) → 5CO₃²⁻(aq) + H₂O(l).

3) Balance oxygen (25 atoms on boths side) and hydrogen (20 atoms on both side of half reaction) atoms:

Balanced half reaction: 20OH⁻(aq) + C₅O₅²⁻(g) → 5CO₃²⁻(aq) + 10H₂O(l).

7 0
3 years ago
Based on the position of the elements in the periodic table, what is the charge of the ions they are most likely to form?
Rainbow [258]

Explanation:

The charge on an ion denotes the amount of electrons lost or gained or even shared by an atom.

An atom will lose, gain or share an equal amount of electrons that will make it stable and achieve an octet and perfect configuration.

This is often synonymous with the component number of electrons in their outermost shell. The valence shell.

For metals on the periodic table, they are always willing to give up electrons due to their large electropositivity.

Metals will give up the number of electrons in their outermost shell to become stable.

Groups 1 and Group 2 will have charges +1 and +2 on them.

For non-metals , they will gain the exact number of electrons that will make them stable.  We must note that half -filled and fully filled orbitals are equally stable.

Elements in groups 6 and 7 are electronegative and will have a charge of -2 and -1 respectively.

For those in groups 3, 4 and 5 they either gain, lose or share commensurate amount of electrons that will make them stable.

Group 8 elements are stable and have no charges.

Generally on the periodic table, metals are to the left and are always positively charged. Non - metals are to the right and are negatively charged.

learn more:

Periodic table brainly.com/question/2690837

#learnwithBrainly

4 0
3 years ago
PLEASE HELP
AfilCa [17]
I think it’s salt water
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I believe the answer is D

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