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What is the concentration of (in % by mass) of a solution that contains 75g of sugar and 750g of water ?


  • Réponse publiée par: candace08


    why do power stations generate ac, and not dc ?

    the reason why power stations generate ac, and not dc, is because

    a. it is easier to generate, safer, and more economical to transmit ac than dc.


    alternating current or ac and direct current or dc are types of current flow in a circuit. power stations generate ac because of its advantages over dc. few examples are:

    1. large electrical generators happen to generate ac naturally, so conversion to dc would involve an extra step.

    2. transformers must have alternating current to operate, and we will see that the power distribution grid depends on transformers.

    3. it is easy to convert ac to dc but expensive to convert dc to ac, so if you were going to pick one or the other ac would be the better choice.

    to learn more about topics in electricity and circuits, follow the following links:

    • what materials can transmit an electric current? see answer here:

    • which of the following cause a current in an electrical circuit? see answer here:  

    • what is ac and dc on electricity? see answer here:  

    • what was an advantage of alternating current (ac) electricity? see answer here:  


  • Réponse publiée par: jemuelpogi
    Qualitative research is primarily exploratory research. it is used to gain an understanding of underlying reasons, opinions, and motivations. it provides insights into the problem or helps to develop ideas or hypotheses for potential quantitative research. qualitative research is also used to uncover trends in thought and opinions, and dive deeper into the problem. qualitative data collection methods vary using unstructured or semi-structured techniques. some common methods include focus groups (group discussions), individual interviews, and participation/observations. the sample size is typically small, and respondents are selected to fulfil a given quota.

    quantitative research is used to quantify the problem by way of generating numerical data or data that can be transformed into usable statistics. it is used to quantify attitudes, opinions, behaviors, and other defined variables – and generalize results from a larger sample population. quantitative research uses measurable data to formulate facts and uncover patterns in research. quantitative data collection methods are much more structured than qualitative data collection methods. quantitative data collection methods include various forms of surveys –  online surveys,  paper surveys,  mobile surveys and kiosk surveys, face-to-face interviews, telephone interviews, longitudinal studies, website interceptors, online polls, and systematic observations.
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What is the concentration of (in % by mass) of a solution that contains 75g of sugar and 750g of wat...