Which of the following words best describe scientists current knowledge about the universe

a) eternal

b) static

c) unpredictable

d) changing

You add 8.9 g of iron to 23.40 mL of water and observe that the volume of iron and water together is 24.53 mL. Calculate the density of iron. Express your answer to two significant figures with the appropriate units.

A piece of sodium metal when thrown in water catches fire. give reason

One of the characteristics of an acid-base reaction is that this type of reaction forms water true or false

Convert 4.56 cm to mm

Which of the following would increase the amount to dissolve a solid solute?

Which of the following has the greatest first ionization engergy li, be, b or c

If we know that 10.0 cm3 of ice has a mass of 9.19 g what is the density of ice

1. The is the particle in the nucleus of the atom that carries a positive charge and is counted to identify the atomic number. What's the answer

How many grams are there in 5.00 moles of lead Pb?

A large body in space that orbits a star and does not produce light of its own