I think it's Potassium iodide because it has the highest solubility at 25°C.
Answer:
Explanation:
1. Convert millilitres to litres
2. Calculate the concentration
Number of moles = mass / molar mass
number of moles of H2 = (<span>6.96×10−4) / (2)(1) = 3.48*10^-4 moles
</span>The equation that describes the formulation of NH3 is:
N2 + 3H2 .......> 2NH3
From the balanced chemical equation, we can see that:
3 moles of H2 produces 2 moles of NH3
Based on this, to know the number of moles of NH3 produced from 3.48*10^-4 moles of hydrogen, we will do cross multiplication as follows:
number of moles = (3.48*10^-4*2) / (3) = 2.32*10^-4 moles
Now, one mole of any element contains Avogadro's number of molecules. Therefore, number of molecules in 2.32*10^-4 moles can be calculated as follows:
number of molecules = 2.32 * 10^-4 * 6.022 * 10^23 = 1.397 * 10^20 molecules
All the choices in the question are sources of error i.e.
- People observe things slightly differently and can make mistakes
- Measuring devices have limits, might be broken, or might be calibrated incorrectly
- Outside factors can affect the experiment (temperature, humidity, light, wind, etc.
- Experiments are usually not 100% accurate. This means that an experiment is most of the time, with error. Errors usually occur in measurement or observation and can cause them to be different from the true values of what is being measured.
TYPES OF ERROR:
Error can either be systematic or random.
- Random errors are errors causes by unpredictable circumstances in the experiment
- Systematic errors are caused by faulty or inaccurate instruments used.
According to this question, the following can be sources of errors in an experiment:
- People observe things slightly differently and can make mistakes
- Measuring devices have limits, might be broken, or might be calibrated incorrectly
- Outside factors can affect the experiment (temperature, humidity, light, wind, etc.
Learn more: brainly.com/question/14149934
Answer:
The anwser is to improve specificity and clarity
Explanation: