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3 years ago

How many neutrons does tin-112 have?

Chemistry

2 answers:

Katarina [22]3 years ago

8 0

Answer:

69 neutrons

Explanation:

Svetllana [295]3 years ago

7 0

Tin stable isotope number 1: 112Sn
NEUTRONS : 62

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Is trimming a bush because it grows too tall a chemical or physical change

professor190 [17]

Answer:

Physical Change

Explanation:

The bush is changing shapes, not changing what it is.

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4 years ago

Which property of water makes it helpful to use in car radiators?

Zolol [24]

Water has a high specific heat. It needs to absorb 4.184 Joules of heat for one gram of water to increase its temperature by 1 degree celsius.

Water in car radiators is used as coolant because it takes longer to heat up. It needs to absorb large amount of heat energy before it changes its temperature and begins to get hot.

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3 years ago

At a certain temperature, 0.900 mol SO 3 is placed in a 2.00 L container. 2 SO 3 ( g ) − ⇀ ↽ − 2 SO 2 ( g ) + O 2 ( g ) At equil

puteri [66]

Answer: The value of $K_c$ is 0.0057

Explanation:

Initial moles of $SO_3$ = 0.900 mole

Volume of container = 2.00 L

Initial concentration of $SO_3=\frac{moles}{volume}=\frac{0.900moles}{2.00L}=0.450M$

equilibrium concentration of $O_2=\frac{moles}{volume}=\frac{0.110mole}{2.00L}=0.055M$ [/tex]

The given balanced equilibrium reaction is,

$2SO_3(g)\rightleftharpoons 2SO_2(g)+O_2(g)$

Initial conc. 0.450 M 0 0

At eqm. conc. (0.450 -2x) M (2x) M (x) M

The expression for equilibrium constant for this reaction will be,

$K_c=\frac{[O_2][SO_2]^2}{[SO_3]^2}$

$K_c=\frac{x\times (2x)^2}{0.450-2x)^2}$

we are given : x = 0.055

Now put all the given values in this expression, we get :

$K_c=\frac{0.055\times (2\times 0.055)^2}{0.450-2\times 0.055)^2}$

$K_c=0.0057$

Thus the value of the equilibrium constant is 0.0057

3 0

4 years ago

Because of this, railroads use the reaction to provide molten steel to weld steel rails together when laying track. When 23.00g

k0ka [10]

Answer:

0.288 mole of Fe.

Explanation:

We'll begin by calculating the number of mole present in 23.00g of iron(III) oxide (Fe2O3). This can be obtained as follow:

Mass of Fe2O3 = 23 g

Molar mass of Fe2O3 = (56×2) + (16×3)

= 112 + 48

= 160 g/mol

Mole of Fe2O3 =?

Mole = mass /Molar mass

Mole of Fe2O3 = 23 / 160

Mole of Fe2O3 = 0.144 mole

Next, we shall write the balanced equation for the reaction. This is given below:

2Al + Fe2O3 —> Al2O3 + 2Fe

From the balanced equation above,

1 mole of Fe2O3 reacted to produce 2 moles of Fe.

Finally, we shall determine the number of mole of Fe produced by the reaction of 23 g (i.e 0.144 mole) of Fe2O3. This can be obtained as illustrated below:

From the balanced equation above,

1 mole of Fe2O3 reacted to produce 2 moles of Fe.

Therefore, 0.144 mole of Fe2O3 will react to produce = 0.144 × 2 = 0.288 mole of Fe.

Thus, 0.288 mole of Fe is obtained from the reaction.

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3 years ago

Does anyone know how to fill in this diagram?

tangare [24]

Answer:

solid to gas is sublimation

gas to solid is deposition

liquid to gas is evaporation/boiling

the rest are correct

3 0

4 years ago

How many neutrons does tin-112 have?​

How many neutrons does tin-112 have?