Forming a hypothesis
Explanation:
The step in an investigation which involves the prediction of results is the stage of forming of a hypothesis.
- A hypothesis is a stage in scientific investigation that follows shortly after asking a simple scientific question.
- Hypothesis is simply a scientific guess that is logical in nature.
- It presents a problem in a manner in which the problem is stated, the cause and the likely outcome can be predicted.
- After a hypothesis formulation, the experiment is conducted and results of findings weighed against the predictions of the statement.
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you have to show us the rest of it because we have no idea what your looking at. I'm sorry
Answer:
1.014×10²³ atoms
Explanation:
Given data:
Volume of tungsten = 1.6 cm³
Density of tungsten = 19.35 g/cm³
Number of atoms of tungsten = ?
Solution:
First of all we will calculate the mass of tungsten.
density = mass/volume
by putting values,
19.35 g/cm³ = mass/1.6 cm³
Mass = 19.35 g/cm³× 1.6 cm³
Mass = 30.96 g
Number of moles of tungsten:
Number of moles = mass/molar mass
Number of moles = 30.96 g/ 183.84 g/mol
Number of moles = 0.1684 mol
1 mole contain 6.022×10²³ atoms.
0.1684 mol × 6.022×10²³ atoms / 1mol
1.014×10²³ atoms
Answer:
There are 173.3 moles of hydrogen gas in the container.
Explanation:
⇄ at 700ºC.
Equilibrium constant of the reaction =
If a mixture of 0.300 mole of CO and 0.300 mole of is heated to 700ºC.
Concentration of CO=
Concentration of
⇄
t = 0 30 M 30M
at eq'm (30 M -x) (30 M -x) x x
Equilibrium constant of the reaction =
x = 17.33 M =
Moles of hydrogen gas
There are 173.3 moles of hydrogen gas in the container.