Answer:
mass of salt 6.72g
Explanation:
mass of the combine mass with salt- mass of the empty beaker
36.176g−29.456g=6.72g
Answer:
Water/H20 is a compound made of hydrogen and oxygen. Although water is the most abundant substance on earth, it is rarely found naturally in its pure form. Most of the time, pure water has to be created. Pure water is called distilled water or deionized water.
Explanation:
Answer:
a) pH = 9.82 b) pH = 1.65
a) pOH = 7.8 b) pOH = 4.45
Explanation:
pOH + pH = 14 for all of these solutions.
SF₆ in the air at a concentration of 1.0 ppb, exerts a partial pressure of 1.0 × 10⁻⁹ atm. At this concentration, 2.3 × 10¹⁰ molecules of SF₆ are contained in 1.0 cm³ of air at 46 °C.
First, we will calculate the partial pressure of SF₆ using the following expression.
where,
- pSF₆: partial pressure of SF₆
- P: total pressure of air (we will assume it is 1 atm)
- ppb: concentration of SF₆ in parts per billion
Then, we will convert 1.0 cm³ to L using the following conversion factors:
- 1 cm³ = 1 mL
- 1 L = 1000 mL
Next, we will convert 46 °C to Kelvin using the following expression.
Afterward, we calculate the moles (n) of sulfur hexafluoride using the ideal gas equation.
Finally, we will convert 3.8 × 10⁻¹⁴ mol to molecules using Avogadro's number.
SF₆ in the air at a concentration of 1.0 ppb, exerts a partial pressure of 1.0 × 10⁻⁹ atm. At this concentration, 2.3 × 10¹⁰ molecules of SF₆ are contained in 1.0 cm³ of air at 46 °C.
You can learn more about partial pressure here: brainly.com/question/13199169