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3 years ago

Explain how the bonding model for sodium metal would differ from the bonding model for sodium chloride, NaCi

1 answer:

8 0

Sodium metal is quite reactive; sodium ions (as in NaCl) are quite unreactive. Cl^- ions are not reactive; they are stingily attracted to positive ions such as Na^+with which they form ionic bonds.

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Solutions of a halogen and a sodium halide are mixed which mixture darkens in colour because a reaction occurs

Dmitry [639]

Answer:

Chlorine and sodium iodide. (see options attached)

Explanation:

Options:

(A) bromine and sodium chloride (B) bromine and sodium fluoride (C) chlorine and sodium fluoride (D) chlorine and sodium iodide

In the reactivity series, chlorine would displace all the other halogens down the group. The order goes:

The order of reactivity is chlorine > bromine > iodine.

Of all the halogens, iodine is the darkest in colour. Hence, the most likely mixture to give off dark coloration after displacement reaction would be that of chlorine and sodium iodide.

I hope this explanation was easy to understand.

7 0

3 years ago

What is the maximum mass in grams of NH3 that can be produced by the reaction of of 2.5 g N2 with 2.5 g of H2 via the equation b

andrezito [222]

Answer: The mass of $NH_3$ produced is, 3.03 grams.

Explanation : Given,

Mass of $N_2$ = 2.5 g

Mass of $H_2$ = 2.5 g

Molar mass of $N_2$ = 28 g/mol

Molar mass of $H_2$ = 2 g/mol

First we have to calculate the moles of $N_2$ and $H_2$ .

$\text{Moles of }N_2=\frac{\text{Given mass }N_2}{\text{Molar mass }N_2}=\frac{2.5g}{28g/mol}=0.089mol$

and,

$\text{Moles of }H_2=\frac{\text{Given mass }H_2}{\text{Molar mass }H_2}=\frac{2.5g}{2g/mol}=1.25mol$

Now we have to calculate the limiting and excess reagent.

The balanced chemical equation is:

$N_2(g)+3H_2(g)\rightarrow 2NH_3(g)$

From the balanced reaction we conclude that

As, 1 mole of $N_2$ react with 3 mole of $H_2$

So, 0.089 moles of $N_2$ react with $0.089\times 3=0.267$ moles of $H_2$

From this we conclude that, $H_2$ is an excess reagent because the given moles are greater than the required moles and $N_2$ is a limiting reagent and it limits the formation of product.

Now we have to calculate the moles of $NH_3$

From the reaction, we conclude that

As, 1 mole of $N_2$ react to give 2 mole of $NH_3$

So, 0.089 mole of $N_2$ react to give $0.089\times 2=0.178$ mole of $NH_3$

Now we have to calculate the mass of $NH_3$

$\text{ Mass of }NH_3=\text{ Moles of }NH_3\times \text{ Molar mass of }NH_3$

Molar mass of $NH_3$ = 17 g/mole

$\text{ Mass of }NH_3=(0.178moles)\times (17g/mole)=3.03g$

Therefore, the mass of $NH_3$ produced is, 3.03 grams.

6 0

3 years ago

Are non-metals malleable and ductile?

Aleks [24]

Are the most abundant in nature and, unlike the metals, not are good conductors of heat and electricity, are not malleable and ductile and have no brightness as metals.

hope this helps!.

3 0

3 years ago

Based only on the distance between the valence electron and the nucleus, which atom has a stronger attraction between its nucleu

nirvana33 [79]

Answer:

The atom having less atomic size.

Explanation:

Because the atom having less atomic size means having less atomic number are more close to nucleus so it having more attraction with respect to having large atomic size as it is far from the nucleus.

8 0

3 years ago

A rigid cylinder with a movable piston contains 50.0 liters of a gas at 30.0 degree C with a pressure of 1.00 atmosphere. What i

defon

Charles law states that volume of a gas is directly proportional to temperature at constant pressure for a fixed amount of gas. the pressure at given conditions is 1.00 atm and the standard pressure at STP conditions too is 1.00 atm therefore pressure remains constant.
V1/T1 = V2/T2
the parameters for the first instance are on the left side and parameters at STP are on the right side of the equation.
T1 - temperature in kelvin - 273 + 30.0 °C = 303 K
T2 - standard temperature - 273 K
V1 - volume - 50.0 L
substituting the values in the equation
50.0 L / 303 K = V / 273 K V = 45.0 L
answer is 2) 45.0 L

3 0

3 years ago

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