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Balance the net ionic equations

Write balanced net ionic equations for the following reactions in basic solution.

S2O32−(aq)+I2(aq)→S4O62−(aq)+I−(aq)

Mn2+(aq)+H2O2(aq)→MnO2(s)+H2O(l)

Zn(s)+NO3−(aq)→NH3(aq)+Zn(OH)42−(aq)

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Net Ionic Equations

Write balanced net ionic equation for the following reaction:

HBr(aq)+Ca(OH)2(aq)→?

Net Ionic Equations

Write balanced net ionic equation for the following reaction:

LiOH(aq)+HI(aq)→?

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So Why Is LinkedIn An IPO Standout?

Screen Shot 2012-05-30 at 1.57.16 PM

Earlier this morning at D10 KPCB analyst Mary Meeker showed a pretty definitive slide about the current state of the public markets with regards to tech companies. “The private market is in a bubble,” Meeker said, “We have a $1 billion fund, and didn’t invest once in Q1 because the valuation’s too crazy.”

The problem with these valuations is that public market investors are more skeptical, Meeker asserted bringing up the above slide comparing the IPOs of Facebook, Zynga, Groupon, Pandora and LinkedIn. Because of this skepticism their valuations are suppressed, almost all were trading at 20% lower than their initial IPO pricing, all except LinkedIn that is. The public market has taken kindly to the career focused social network, which is currently trading at $100 a share, 137% above its strike price of $32.

Kara Swisher had the opportunity to ask LinkedIn founder Reid Hoffman and CEO Jeff Weiner why they thought the company was doing so well later today, dubbing it the “Little LinkedIn That Could”. Their answer?

Hoffman said part of the company’s success was only focusing on the long-term, “I only look at the stock price once a month, it’s doesn’t really affect what are we building towards. Weiner said that companies were often to focused on IPO events with companies being criticized for talking too much or too little, etc.  Read More

New Research Could Mean Cellphones That Can See Through Walls

TxACE director Kenneth O (left), professor of electrical engineering, with member Dae Yeon Kim
Dr. Kenneth O, director of the Texas Analog Center of Excellence and a professor of electrical engineering, left, worked with a team including Dae Yeon Kim, who was among the authors of the research report.

Comic book hero superpowers may be one step closer to reality after the latest technological feats made by researchers at UT Dallas. They have designed an imager chip that could turn mobile phones into devices that can see through walls, wood, plastics, paper and other objects.

The team’s research linked two scientific advances. One involves tapping into an unused range in the electromagnetic spectrum. The other is a new microchip technology.

The electromagnetic spectrum characterizes wavelengths of energy. For example, radio waves for AM and FM signals, or microwaves used for cell phones or the infrared wavelength that makes night vision devices possible.

But the terahertz band of the electromagnetic spectrum, one of the wavelength ranges that falls between microwave and infrared, has not been accessible for most consumer devices.

“We’ve created approaches that open a previously untapped portion of the electromagnetic spectrum for consumer use and life-saving medical applications,” said Dr. Kenneth O, professor of electrical engineering at UT Dallas and director of the Texas Analog Center of Excellence (TxACE).  “The terahertz range is full of unlimited potential that could benefit us all.”  Read More

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