How me and other scientists know about animals that went extinct for million people million of years ago

How is frying egg related to science?

Rainwater is slightly acidic. why?

The characteristc bright line spectrum of an atom is produced by 1. Electrons absorbing quanta 2. Electrons emitting quanta 3. Protons absorbing quanta 4. Protons emitting quanta

3Fe+4H2O (yields) Fe3O4+4H2. What is the mole ratio of Fe3O4 to Fe? A - 1:3 B - 1:4 C - 3:1 D - 4:3

What type of chemical reaction happens when one element replaces another element in a compound?

In a phase change of water between the liquid and the gas phases, 770.1 kJ of energy was released by the system. What was the product, and how much of it was formed in the phase change? (dа ta: H₂O (l) → H₂O (g) ΔH = 44.01 kJ/mol.) A.

Explain the problem surrounding the ammonia-making process in terms of chemical equilibrium. Chemical equation for producing ammonia: N2 + 3H2 ⇌ 2NH3 + energy

How many Joules are equivalent to 75 Calories?

How do you balance nuclear equations?

Ice melting, water boiling, lighting a match, grape juice freezing. Which statement describes evidence of a chemical reaction