What is the RYGBV scale and what does it each color mean? Why might pH fall in a culture medium when bacteria are actively growing? What does 'the rate of osmosis' mean? What is an uncompensated ion? Low pH is
Water has a pH level of 7 -- it's neutral, meaning it has the same amount of acids and alkalis, which balance each other out. When you're thinking about liquids in terms of their pH levels, going up or down one number on the scale represents a tenfold change in the acidity or ...
What does PH mean on Snapchat? PH is an abbreviation that most people have started using on Snapchat. An abbreviation has many different meanings. Therefore, it is difficult to conclude the correct meaning of PH. However, I have listed some possible meanings of the PH abbreviation on Snapcha...
”,划线单词所在句子是“My mother was a volunteer and she used to take me to the old people's home.(我妈妈是一名志愿者,她过去常常带我去老人院。)”,根据第一段第一句“I have been a volunteer for eight years.(我当志愿者已经八年了。)”可知,妈妈过去常常带我去老人院,是因为妈妈是一名志愿...
College athletics can be the heartbeat of a school, bringing the community together and forging bonding experiences and a sense of identity for students and alumni, even as sporting events come to a halt amid concerns around the coronavirus pandemic on campuses. Mascots embody that school spirit,...
Dr. Vinny
What does it mean if the pH of a solution is decreased from 9 to 8? Solution: A solution is a fluid which is comprised of at least two miscible components. The major component of a solution is called the solvent while its minor components are all referred to as the solutes o...
What does pH measure? The pH measures if a substance is a base or an acid. The pH scale can detect whether an acid is strong or a weak acid. How...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our expert...
Understanding the culprits behind elevated pH levels is crucial for the health and happiness of your aquatic buddies. 1. The Tap Water Factor When it comes to high pH levels, the usual suspect is your tap water. Most of us fill our tanks straight from the tap, right? Well, it’s ...
根据文章第五段第二句“Kelly also does lots of things to help children who have problems in reading.(凯莉也做了很多事情来帮助有阅读问题的孩子。)”可知,凯莉做了很多事情来帮助有阅读问题的孩子,所以划线单词“change”的中文意思是改变,表示凯莉希望通过自己的努力来改变这些孩子的阅读问题,故选B。