How do you get activation energy? Activation Energy Problem Step 1: Convert temperatures from degrees Celsius to Kelvin. T = degrees Celsius + 273.15. T1 = 3 + 273.15. Step 2 – Find Ea ln(k2/k1) = Ea/R x (1/T1 – 1/T2) Answer: The activation energy for this reaction is 4.59 x 104 J/mol or 45.9 […]
Are Heavier arrows more accurate?
Are Heavier arrows more accurate? All factors remaining equal, heavy arrows always are more reliable, more durable, than lighter. More material, with additional layers of carbon material, equal more strength when subjected to abuse such as bone impacts or when shot into rocky ground or bounced off trees following misses. What happens if arrow spine […]
What is the main function of the jejunum and ileum?
What is the main function of the jejunum and ileum? The primary function of the jejunum is to absorb sugars, amino acids, and fatty acids. Both the jejunum and ileum are peritoneal. The ileum absorbs any remaining nutrients that did not get absorbed by the duodenum or jejunum, in particular vitamin B12, as well as […]
Can autopsy be performed without consent?
Can autopsy be performed without consent? Yes, an autopsy can be ordered by authorities without relatives’ consent in several situations. If an autopsy is not required by law or ordered by authorities, the deceased person’s next of kin must give permission for an autopsy to be performed. Can an autopsy be requested? Can anyone request […]
When a cannonball is fired from a cannon?
When a cannonball is fired from a cannon? This is called the principle of conservation of momentum . Momentum is conserved in collisions and explosions . Conservation of momentum explains why a gun or cannon recoils backwards when it is fired. When a cannon is fired, the cannon ball gains forward momentum and the cannon […]
How can you tell which star cluster is older?
How can you tell which star cluster is older? By determining the mass of the main-sequence turnoff stars, we get the age of the cluster. The cluster age equals the main-sequence lifetime of the turnoff stars. This is one of the ways we have studied the age of the Universe and the formation history of […]
How did alchemists contribute to science?
How did alchemists contribute to science? Through the span of several millennia, alchemists “were learning fundamental principles of chemistry: breaking down ores, dissolving metals with acids, and precipitating metals out of solution [8].” This laid the foundations of basic scientific experimentation with modern alchemists such as Boyle emphasizing the … What were some contributions of […]
Which is the rarest Group 1 element?
Which is the rarest Group 1 element? francium Do all group 1 elements react vigorously with water? All the alkali metals react vigorously with cold water. This shows that the reactivity of the alkali metals increases as you go down Group 1. What is the trend as we go down Group 1? Explaining the trend […]
Why did Dave bite through the traces?
Why did Dave bite through the traces? They are attacked by starving dogs from the neighboring Indian village because the dogs could smell the food they were carrying. He bites through Sol-leks traces, the dogs pull away without the sled, and Dave stands in his proper place. So they hook Dave back into the trace. […]
Why was the plum pudding model wrong?
Why was the plum pudding model wrong? He argued that the plum pudding model was incorrect. The symmetrical distribution of charge would allow all the α particles to pass through with no deflection. Rutherford proposed that the atom is mostly empty space. The atom now consisted of a positive nucleus with negative electrons in circular […]