What were most of the elements discovered when Mendeleev developed his original periodic table?

a. gases

b. radioactive

c. liquids

d. solids

Space vehicles traveling through Earth's radiation belts can intercept a significant number of electrons. The resulting charge buildup can damage electronic components and disrupt operations. Suppose a spherical metallic satellite 1.

What pushes against gravity in: a main sequence star, a white dwarf, a neutron star, and a black hole? electron degeneracy, neutron degeneracy, nothing, and heat pressure nothing in all cases. Gravity always wins.

why is ammonia considered a base even though it contains no hydroxide ions. is it a strong or weak base?

Why are there so few working wave power stations?

An explosion that occurs at the end of a massive star's life is a (n) ?

Oxygen makes up the largest part of living cells at 65%. What is the percentage of the second-most abundant element in living cells?

Shivering to warm up illustrates which characteristic of life? A. adaptation to environment B. homeostasis C. getting energy D. growth

Dante pours hot tea into a mug that is cool to the touch. Which best explains what will happen now?

What type of resource can be regenerated or replenished by biochemicl cycles

How much work is done lifting a 12-m chain that is initially coiled on the ground and has a density 2 kg/m so that its top end is 11 m above the ground? (Assume that acceleration due to gravity is g = 9.8 m/s2.)