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MariettaO [177]
4 years ago
5

Which statements are inconsistent with dalton's atomic theory as it was originally stated?

Chemistry
1 answer:
Blababa [14]4 years ago
3 0

Missing question:

A. All carbon atoms are identical.

B. An oxygen atom combines with 1.5 hydrogen atoms to form a water molecule.

C. Two oxygen atoms combine with a carbon atom to form a carbon dioxide molecule.

D. The formation of a compound often involves the destruction of one or more atoms.

Answer is: B and D.

A is correct because Daltan stated: All atoms of a given element have the same mass and other properties that distinguish them from the atoms of other elements.

C is correct because atoms combine in simple, whole- number ratios to form compounds, B is incorrect because ratio is not simple, whole number.

D is incorrect because according to Dalton. atoms can't be created or destroyed.

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Which of the following solutes will increase the boiling point of water the most? magnesium fluoride (MgF2) potassium bromide (K
Alecsey [184]
I think its potassium bromide
5 0
4 years ago
Read 2 more answers
If an element has two isotopes, what is the atomic mass if one of the isotopes has a mass of 15.000 amu and makes up 5.000% of t
olasank [31]
The atomic mass of element is the weighted average atomic mass of the element with respect to the abundance of the isotopes of that element 
atomic mass is the sum of the products of the mass of isotopes by their percentage abundance 
atomic mass = 15.000 amu x 5.000 % + 16.000 amu x 95.000 % 
                     = 0.7500 + 15.200
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8 0
3 years ago
A 0.753 g sample of a monoprotic acid is dissolved in water and titrated with 0.250 M NaOH. What is the molar mass of the acid i
Alexeev081 [22]

Answer:

MM_{acid}=140.1g/mol

Explanation:

Hello,

In this case, since the acid is monoprotic, we can notice a 1:1 molar ratio between, therefore, for the titration at the equivalence point, we have:

n_{acid}=n_{base} \\\\V_{acid}M_{acid}=V_{base}M_{base}\\\\n_{acid}=V_{base}M_{base}

Thus, solving for the moles of the acid, we obtain:

n_{acid}=0.0215L*0.250\frac{mol}{L}=5.375x10^{-3}mol

Then, by using the mass of the acid, we compute its molar mass:

MM_{acid}=\frac{0.753g}{5.375x10^{-5}mol} \\\\MM_{acid}=140.1g/mol

Regards.

7 0
3 years ago
Which gas would diffuse rapidly at the same temperature and pressure UF6 or CL2
svetoff [14.1K]

Answer:

UF6

Explanation:

6 0
3 years ago
A titration required 42.00 mL of 0.150 M NaOH. How many moles of NaOH is this?
NARA [144]

Answer:

0.006342moles

Explanation:

1000ml of NaOH contain 0.151moles

42ml of NaOH contain (42*0.151)/1000 moles

=0.006342moles

8 0
2 years ago
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