Which of the following vertebrates evolved in the Carboniferous period?

Amphibians

Reptiles

Mammals

Fish

The reaction between ethyl bromide (C2H5Br) and hydroxide ion in ethyl alcohol is shown below at 330 K. C2H5Br (alc) + OH - (alc) → C2H5OH (l) + Br - (alc) The reaction is first order each in ethyl bromide and hydroxide ion. When [C2H5Br] is 0.

A patient arrives in the emergency room with a burn caused by steam. Calculate the heat that is released when 14.5 g of steam at 100. ∘C hits the skin, condenses, and cools to body temperature of 37.0 ∘C.

A solution of pH 3 was mixed with a solution of pH 9 what The final pH could be? 2 6 10 12

What is each horizontal row of elements in the periodic table called?

If you measured the ph of stomach acid and of bleach, a. both would be above 7. b. the ph of stomach acid would be below 7, but the ph of bleach would be above 7. c. the ph of stomach acid would be above 7, but the ph of bleach would be below 7. d.

Who created the periodic table and in what year?

Why is uranium 235 the most commonly used isotope for nuclear fission in current uses in nuclear power generation?

Based upon the pH scale, a vegetable with a pH of 5.3 would be

How many grams of Cl are in 535 g of CaCl2?

2. An object experiences an acceleration, g, when it is on the surface of a planet of radius R. What will be the acceleration on the object after it has been moved to a distance of 4R from the center of the planet? A) 168 B) 48 C) 1/4 g D) 1/16 g