Which branch of science provide the proof that earth is approximately 4.6 billion years old

Entropy is a measure of what in a system

Hat is the formula for finding pressure

Why has the atomic model changed over time

Combining 0.350 mol Fe 2 O 3 with excess carbon produced 18.9 g Fe. Fe 2 O 3 + 3 C ⟶ 2 Fe + 3 CO What is the actual yield of iron in moles? What is the theoretical yield of iron in moles? What is the percent yield?

6. Which group of compounds is described as insoluble? chlorides nitrates phosphates sulfates

Suppose a thermometer has marks at every one degree increment and the mercury level on the thermometer is exactly between the 25 and 26 degree Celsius marks. We should properly report the temperature measurement as:

What does the orbital tell you about the location of the electron?

If a 1.45 M solution has 2.43 g HCl dissolved, what is the volume of solution? (Change g Hl into mol using molar mass)

Which of the following describes a reaction that reaches equilibrium?

What happens to water during evaporation? A) It turns gas as it cools. B) It turns to liquid as it cools. C) It turns to solid as temperature decreases. Eliminate D) It turns to gas as the temperature increases.