Which is considered a fruit?<br><br><br> acorn<br> squash<br> orange<br> beet<br> carrot

2 HI(g) = H2(g) + 1,(9) K, - Party met = 0.0016 The decomposition of HI(g) at 298 K is represented by the equilibrium equation a

givi [52]

Answer:

(C) P = 7.4 torr, because it is directly proportional to the initial pressure of HI.

Explanation:

From the equation of reaction,

Kc = [H2][I2]/[HI]^2

Kc = 0.0016

Initial pressure of HI = 200 torr

Let the equilibrium pressure of I2 be y

Mole ratio of H2 to I2 from the equation of reaction is 1:1, equilibrium pressure of H2 is also y

Mole ratio of HI to I2 is 2:1, equilibrium pressure of HI is (200 - 2y)

0.0016 = y×y/(200 - 2y)^2

y^2 = 0.0016(40,000 - 800y + 4y^2)

y^2 = 64 - 1.28y + 0.0064y^2

y^2 - 0.0064y^2 + 1.28y - 64 = 0

0.9936y^2 + 1.28y - 64 = 0

y^2 + 1.29y - 64.41 = 0

The value of y must be positive and is obtained by the use of the quadratic formula.

y = [-1.29 + sqrt(1.29^2 - 4×1×-64.41)] ÷ 2(1) = [-1.29 + 16.10] ÷ 2 = 14.81 ÷ 2 = 7.4

Equilibrium pressure of I2 is 7.4 torr because the relationship between I2 and HI is direct in which increase in one quantity (initial pressure of HI) would result to a corresponding increase in the other quantity (equilibrium pressure of I2)

3 0

3 years ago

What is the molarity of a HCl solution, if 28.6 mL of a 0.175 m NaOH solution is needed to neutralize a 25.0 mL sample of the HC

Katen [24]

The molarity of the HCl solution needed to neutralize 28.6 mL of a 0.175 M NaOH solution is 0.2002 M

We'll begin by writing the balanced equation for the reaction. This is given below:

HCl + NaOH —> NaCl + H₂O

From the balanced equation above,

The mole ratio of the acid, HCl (nA) = 1

The mole ratio of the base, NaOH (nB) = 1

From the question given above, the following data were obtained:

Volume of base, NaOH (Vb) = 28.6 mL

Molarity of base, NaOH (Mb) = 0.175 M

Volume of acid, HCl (Va) = 25 mL

<h3>Molarity of acid, HCl (Ma) = ?</h3>

The molarity of the acid, HCl can be obtained as follow:

MaVa / MbVb = nA / nB

(Ma × 25) / (0.175 × 28.6) = 1

(Ma × 25) / 5.005 = 1

Cross multiply

Ma × 25 = 5.005

Divide both side by 25

Ma = 5.005 / 25

Therefore, the molarity of the acid, HCl needed for the reaction is 0.2002 M

Learn more: brainly.com/question/25573711

7 0

3 years ago

What type of plate boundary does Iceland lie over? What makes Iceland special in terms of plate tectonics?

Marat540 [252]

Answer:

tectonic plates

Explanation:

....brainliest pls

5 0

3 years ago

Assume that the half-life of an M&M is 15 seconds A. you start with M& M's, how many would be left unchanged after 1 min

Nata [24]

Answer:

See below

Explanation:

1 minute is 4 halflives ( because 4 x 15 sec = 1 minute)

(1/2)^4 = 1/16

you will have 1/16 as many M&M as you started

7 0

2 years ago

monatomic ion with a charge of +2 has an electronic configuration of 1s22s22p63s23p6. This ion is a(n) . What is the chemical sy

Debora [2.8K]

Answer: The ion is $Ca^{2+}$ . The chemical symbol of the noble gas this ion is isoelectronic with Kr.

Explanation:

The given electronic configuration is,

$M^{2+}:1s^22s^22p^63s^23p^6$

The number of electrons = 2 + 2 + 6 + 2 + 6 = 18 electrons

As the ion has a charge of +2 , that means it has lost two electrons so the the neutral element will have 2 more electrons i.e 18+2 = 20. The element has atomic number of 20 and the element will be Calcium with electronic configuration of

$M: 1s^22s^22p^63s^23p^64s^2$

Thus the symbol of ion is $Ca^{2+}$ . the nearest noble gas with 18 electrons is Krypton with symbol Kr.

3 0

4 years ago

Which is considered a fruit? acorn squash orange beet carrot