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This lesson covers solved numerical problems on molarity, molality, mole fraction, and percentage concentrations to help you clearly understand solution concentration concepts in chemistry.

Amid sky-high inflation, water and energy cuts and prospects for a deal with the U. S. dimming, President Masoud Pezeshkian has apparently thrown up his hands. By Farnaz Fassihi and Leily Nikounazar ...

Foreword: I wish solving housing affordability fit into a 30-second TikTok or Instagram reel. It just doesn’t. But if we’re serious about fixing homeownership in America, we need to move past ...

In a nondescript office over One Bow Street in Harvard Square, the Joint Center for Housing Studies keeps a finger on the pulse of America’s housing markets — and tries to connect city planners, ...

Some problems don’t always wait for parts; they meet a toolbox, a junk drawer, and a brain that refuses to quit. That’s where the best DIY shows up: fast, clever, and just odd enough to work. These ...

Court official dismisses Justice Department's misconduct complaint against a federal judge in DC Price correction "worse than 2008" coming to US housing market—analyst Texas is running out of water.

While delivering his victory speech on Tuesday night, New York City Mayor-elect Zohran Mamdani made a statement about the government's role in citizens' lives, sparking concern from critics online.

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 ...

Children as young as 4 years old are capable of finding efficient solutions to complex problems, such as independently inventing sorting algorithms developed by computer scientists. The scientists ...

Most American voters believe the United States is too politically divided to solve problems, according to a poll by The New York Times and Siena University released Thursday. The poll found that 64 ...

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 ...