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3 years ago

Which one has the highest Hydrogen Bonding: 1. HF 2. HCL 3. H2O 4. NH3

Chemistry

2 answers:

sleet_krkn [62]3 years ago

5 0

Answer:

the answer is the

first one

nikklg [1K]3 years ago

5 0

First one because H and F has the largest electronegativity difference I believe

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How many are molecules ( or formula) in each sample?

andre [41]

Answer:

$4.010 \times 10^{25} \text { molecules of } \mathrm{NaHCO}_{3} \text { present in } 55.93 \mathrm{kg} \text { of } \mathrm{NaHCO}_{3}$
$16.86 \times 10^{26} \text { molecules of } \mathrm{Na}_{3} \mathrm{PO}_{4} \text { present in } 459 \mathrm{kg}\left(4.59 \times 10^{5} \mathrm{gm}\right) \text { of } \mathrm{Na}_{3} \mathrm{PO}_{4}$

Explanation:

Number of molecules for $55.93 \mathrm{kg} \text { of } \mathrm{NaHCO}_{3}$

$\text { Firstly molar mass is calculated of } \mathrm{NaHCO}_{3}:$

Atomic mass of Na + H + C + 3(O) = 22.99 + 1.008 + 12.01 + 3 × 16.00 = 84.00 g/mol

$\text { Number of molecules of } \mathrm{NaHCO}_{3} \text { in } 55.93 \text { kg are as follows: }$

$55.93 \times\left(10^{3} \mathrm{gm}\right) \times \frac{1 \mathrm{mol} \mathrm{NaHCO}_{3}}{84.00 \mathrm{gm} \mathrm{NaHCO}_{3}} \times\left(6.022 \times 10^{23} \mathrm{molecules} \text { i.e Avogadro number }\right)$

$=4.010 \times 10^{26} \text { molecules of } \mathrm{NaHCO}_{3} \text { present in } 55.93 \mathrm{kg} \text { of } \mathrm{NaHCO}_{3}$

Number of molecules for for $\left(4.59 \times 10^{5} \mathrm{gm}\right) \text { of } \mathrm{Na}_{3} \mathrm{PO}_{4}$

$\text { Firstly molar mass is calculated of } \mathrm{Na}_{3} \mathrm{PO}_{4}$

= Atomic mass of 3(Na) + P + 4(O)

= 3(22.99) + 30.97 + 4(16.00) = 163.94 g/mol

$459 \times\left(10^{3} \mathrm{gm}\right) \times \frac{1 \mathrm{mol} N a_{3} P O_{4}}{163.94 \mathrm{gm} N a_{3} P O_{4}} \times\left(6.022 \times 10^{23} \mathrm{molecules} \text { i.e Avogadro number) } / 1 \mathrm{mol}\right.$

$=16.86 \times 10^{26} \text { molecules of } \mathrm{Na}_{3} \mathrm{PO}_{4} \text { present in } 459 \mathrm{kg}\left(4.59 \times 10^{5} \mathrm{gm}\right) \text { of } \mathrm{Na}_{3} \mathrm{PO}_{4}$

8 0

3 years ago

The images show two metamorphic rock samples. Which statement accurately describes these rocks

kodGreya [7K]

Answer: its b

Explanation:

6 0

4 years ago

Find the formula mass (molecular mass) of propanol: C3H6O

malfutka [58]

Answer:

Formula mass = 58.09 g

Explanation:

Formula mass of a given molecule is defined as the sum of atomic masses of elements forming the empirical formula of that molecule.

In order to calculate the formula mass of propanol, following data is required;

Empirical Formula of Propanol:

The empirical formula of Propanol is C₃H₆O (also the molecular formula) as it is the lowest possible atomic ratio of the given elements.

Atomic Masses of Elements:

Carbon = 12.01 g/mol

Hydrogen = 1.01 g/mol

Oxygen = 16.00 g/mol

Hence,

Formula mass = (At. mass of C)₃ + (At. mass of H)₆ + (At. mass of O)

Formula mass = (12.01)₃ + (1.01)₆ + (16.00)

Formula mass = 36.03 + 6.06 + 16.00

Formula mass = 58.09 g

5 0

3 years ago

Suppose that 0.250 mol of methane, CH4(g), is reacted with 0.400 mol of fluorine, F2(g), forming CF4(g) and HF(g) as sole produc

shtirl [24]

300 gallons

Explanation:

7 0

3 years ago

The ability of carbon to attract electrons is

Gelneren [198K]

Less than that of nitrogen and oxygen remember cnof "see noff" . this is the order of electronegativity carbon is less than nitrogen which is less than oxygen which is less than fluorine.

5 0

3 years ago