How many liters of H2 are required to form 5 moles of H2O at STP?

Chemistry

1 answer:

valentinak56 [21]3 years ago

7 0

steps...

1) convert mass H2O to moles H2O

2) use coefficients of balanced equation to convert to moles O2

3) convert moles O2 to L O2.

solution...

10.5 g H2O x (1 mole H2O / 18.0 g H2O) = 0.583 moles H2O

from the balanced equation, 1 mole O2 --> 2 moles H2O.. therefore...

0.583 moles H2O x (1 mole O2 / 2 moles H2O) = 0.292 moles O2

from here you can either use the specific form of the ideal gas law for STP...

0.292 moles O2 x (22.4 L O2 / mole O2) = 6.54 L O2

or you can use the more general form of the ideal gas law...

V = nRT/P = (0.292 moles) x (0.0821 Latm/moleK) x (273 K) / (1 atm)

V = 6.54 L O2

Hope this helps!

You might be interested in

In comparison with liquids and gases, solids are

Citrus2011 [14]

In comparison with liquids and gases, solids are more dense. The answer is letter B. <span>The solid has a more definite shape and volume. The particles are locked into place. It cannot be further compressed due to the bond that exists between the molecules. The kinetic energy of the molecules is close to none because the molecules are so close and so compact with each other. </span>

5 0

3 years ago

Solution of the Schrödinger wave equation for the hydrogen atom results in a set of functions (orbitals) that describe the behav

kvv77 [185]

Answer :

'n' specifies → (B) The energy and average distance from the nucleus.

'l' specifies → (C) The subshell orbital shape.

'ml' specifies → (A) The orbital orientation.

Explanation :

Principle Quantum Numbers : It describes the size of the orbital. It is represented by n. n = 1,2,3,4....

Azimuthal Quantum Number : It describes the shape of the orbital. It is represented as 'l'. The value of l ranges from 0 to (n-1). For l = 0,1,2,3... the orbitals are s, p, d, f...

Magnetic Quantum Number : It describes the orientation of the orbitals. It is represented as $m_l$ . The value of this quantum number ranges from $(-l\text{ to }+l)$ . When l = 2, the value of

Spin Quantum number : It describes the direction of electron spin. This is represented as $m_s$ . The value of this is $+\frac{1}{2}$ for upward spin and $-\frac{1}{2}$ for downward spin.