How fast is biodiversity being lost? These experts calculate that between 0.01 and 0.1% of all species will become extinct each year. If the low estimate of the number of species out there is true – i.e. that there are around 2 million different species on our planet** – then that means between 200 and […]
What year did the Narrows bridge collapse?
What year did the Narrows bridge collapse? September 1938 How much does it cost to go over the Tacoma Narrows Bridge? Currently, crossing the bridge in a car or another two-axle vehicle costs $5 with a Good to Go! pass or $6 cash at the tollbooth. How big is the Octopus Under the Narrows Bridge? […]
What is negative resonance?
What is negative resonance? Negative Resonance Effect- Negative resonance effect occurs when the groups withdraw the electrons from other molecules by the process of delocalization. The groups are usually denoted by -R or -M. In this process, the molecular electron density is said to decrease. For example- -NO2, C=O, -COOH, -C≡N. What is difference between […]
How much is a printed circuit board?
How much is a printed circuit board? Printed circuit boards have a huge range of quality, reliability, complexity, and price points. A circuit board typically costs from 50 cents to $300 dollars to produce, depending on your needs. What is the other name of printed circuit board? PCBs use conductive pathways, tracks or signal traces […]
What is used to transport hot crucibles and to remove their covers?
What is used to transport hot crucibles and to remove their covers? Laboratory Equipment A B used to grind chemicals into powder mortar and pestle used to hold objects on a ring stand utility clamp used to transport hot crucibles and to remove their covers crucible tong to hold, mix, and heat chemicals – easier […]
What is the number of protons in copper?
What is the number of protons in copper? 29 What is the Unabbreviated electron configuration of copper? [Ar] 3d¹⁰ 4s¹ What is the ground state of copper? Copper has the ground-state electronic configuration [Ar]4s1 3d10. It has two commonly observed ions, Cu+ and Cu2+. Cu+ has the ground-state electronic configuration [Ar]3d10. What is the Unabbreviated […]
Could we survive on earth without the greenhouse effect quizlet?
Could we survive on earth without the greenhouse effect quizlet? What is the greenhouse effect? No we would not be able to survive because without these gases, the Earth would be too cold for humans, plants and other creatures to live. The two largest greenhouse gases are Co2 and methane which comes from fossil fuels […]