This lesson covers solved numerical problems on molarity, molality, mole fraction, and percentage concentrations to help you clearly understand solution concentration concepts in chemistry.
On Tuesday, November 4, Zohran Mamdani clinched the election for mayor of New York City, capturing just over 50 percent of the vote in a four-way race. Mamdani, a member of the New York State Assembly ...
New NY math guidelines tell teachers to stop testing kids on problem-solving speed to curb ‘anxiety’
The New York State Education Department is pushing new math guidelines, including a recommendation that teachers stop giving timed quizzes — because it stresses students out. The new guidelines also ...
You probably don’t need more time. By Jancee Dunn When I look back on all the major decisions I’ve dithered over, I could scream. It took me a decade to commit to becoming a parent. I wavered for a ...
We've wondered for centuries whether knowledge is latent and innate or learned and grasped through experience, and a new research project is asking the same question about AI. When you purchase ...
We like to think that we're pretty good at math, especially after years of schooling. But every once in a while, a simple third-grade math problem manages to trip us up and make us question our ...
See the world through the lens of science. Sign up for our free, daily newsletter Today in Science. As a child of the 1990s, I couldn’t avoid the game-turned-best-seller Tetris. Launched in 1984 by ...
Sven, a sales leader, received a call from a major customer who was furious. Their order arrived late, the product was damaged, and to top it off, their invoice didn’t reflect the volume discount ...
Consider someone who’s perfectly content with their office chair. It’s not ergonomic, it doesn’t have lumbar support, but it works. Then, during a meeting or a visit to a friend’s office, they sit in ...
Need to solve a problem? You might want to sleep on it—for about 20 minutes. New research suggests that taking a quick, deep nap may help lead to a “eureka” moment, as scientists reported last week in ...
How bees, beer cans and big data all solve the same problem: not enough space. By Steven Strogatz Photo illustrations by Jens Mortensen Each installment of “Math, Revealed” starts with an object, ...
A record-high share of Americans want the government to do more to tackle the nation’s problems – but few think the political parties are up to the task, according to new polling. In the latest SSRS ...
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