Answer:
27.81 L
Explanation:
Assuming the gas is ideal, we can solve this problem by using <em>the following formula</em>:
Where:
- n is the number of moles, 3.20 mol
- R is a constant, 0.082 atm·L·mol⁻¹·K⁻¹
We<u> input the data</u>:
- 2.50 atm * V = 3.20 mol * 0.082 atm·L·mol⁻¹·K⁻¹ * 265 K
And <u>solve for V</u>:
Answer:
±0.005 g
Explanation:
The uncertainty depends on whether the measurement was obtained manually or digitally.
1. Manual
The minimum uncertainty is ±0.01 g.
It may be greater, depending on random or personal errors
2. Digital
Most measurements of mass are now made on digital scales.
A digital device must always round off the measurement it displays.
For example, if the display reads 20.00, the measurement must be between 20.005 and 19.995 (±0.005).
If the measured value were 20.006, the display would round up to 20.01.
If the measured value were 19.994, the display would round down to 19.99.
The uncertainty is ±0.005 g.
The scale shown below would display a mass of 20.00 g
When an electron moves from a higher to a lower energy level, energy is released (often as light).
Answer:
206 kj of heat is required to boil 78.5 kg of water at its boiling point
Explanation:
Limestone acts as a soil acid neutralizer and consists of eithercalcium and magnesium carbonate orcalcium carbonate. These are called dolomitic limestone and calciticlimestone respectively