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The molar concentration of a substance in a solution is the number of chemical species in the solution per unit volume. Molarity is a unit of concentration used in chemistry and is represented by the symbol mol/L or mol/dm3. A substance's…

To obtain a NEBOSH qualification, you must pass a written exam and practical assessments. The number of assessments and exams varies according to the chosen course. You must score certain marks in each section to pass the qualification. The…

The purpose of a survey questionnaire is to gather information. It can be cross-sectional or longitudinal. Cross-sectional surveys are administered to a population sample within a short time. They offer a snapshot of what people are…

Did you know that 80% of Year 10 pupils gave wrong answers in a maths quiz? If you're a teacher looking for a fun way to test your pupils' knowledge, you may want to try using a Scratch activity! This learning project consists of a series…

Ammonium hydroxide is a solution of ammonia and water used in cleaning solutions. It is an antimicrobial agent and a denaturant. It is one of the most commonly used cleaning agents. Ammonia hydroxide is also aqueous ammonia, ammoniacal…

You can work with people of all ages and abilities as a gym trainer. In addition to helping people become fit, you can also make a nice living. You can become certified to train others, which can help you gain the skills and experience…

If you're interested in learning how to analyze data and make informed decisions, you'll find data analytics courses to suit your needs. These courses are available online and focus on hands-on learning. Students are assigned a tutor or…

The phenolphthalein indicator is a color change indicator for pH. Its color changes with pH and the fraction of conjugate base present. The indicator changes color over a narrow pH range, from 8.3 to 10.5 (Figure 14.9.2). An excellent way…

If you are interested in learning more about mobile application development, TESDA is a government agency in the Philippines that offers free courses and dual training programs. You can take one of their mobile application development…

The cost of a TEFL course is not the only thing you need to consider. You also have to think about what is available to you. For example, there are online and offline TEFL courses available. Some are one-way learning, while others are…