What is the property that is most similar among all elements across a whole period called

How did scientists discover that all living things are made of cells?

Calculate the heat change in calories for condensation of 20.0 g of steam at 100∘C.

A team of scientists is studying the fossils in the cross-section of rock shown below. Between which two layer of fossils can secondary succession be observed? A) Layers 1 and 2. B) Layers 2 and 3. C) Layers 3 and 4. D) Layers 1 and 4. Eliminate

Difference between nitrogen fixatio and dentrification

After electrolyzing aqueous zinc iodide (ZnI2), what state is iodine in - solid, liquid, or gas?

How many moles of neon (Ne, 20.179 g/mol) are in 68.4 grams of neon

A 50.00 mL sample of groundwater is titrated with 0.0300 M EDTA. Of 12.40 mL of EDTA is required to titrate the 50.00 mL sample, what is the hardness of the groundwater in molarity and in parts per million of CaCO 3 by mass

Why openness is important to the progress of science?

At a certain temperature the rate of this reaction is second order in NH4OH with a rate constant of 34.1 M^-1s^-1: Suppose a vessel contains NH4OH at a concentration of 0.100M.

If you go into the lab and dissolve 2.11 g of magnesium chloride in enough water to make 1500 ml of solution, what is the molarity of the resulting solution?