Why was gold not historically used for tools?

How do everyday activities like driving a car and using electricity lead to global warming

How can we see all four colors from a hydrogen gas discharge tube simultaneously?

Nitrogen (N) and hydrogen (H) react with each other to produce ammonia (NH3). This reaction is shown in an equation as N2 + 3H2 → 2NH3. What is the ratio of nitrogen atoms to hydrogen atoms in ammonia? 1 to 2 1 to 3 2 to 1 2 to 3 3 to 1

The reaction between ethyne (acetylene, C 2 H 2) and hydrogen. The product is ethane (C 2 H 6). Which is the limiting reactant? Which is the excess reactant? Explain

Select all of the true statements about empirical and molecular formulas. A. The molecular and empirical formulas for a compound have the same ratio of atoms. B.

Ab2 has a molar solubility of 3.72*10-4 m. what is the value of the solubility product constant for ab2? express your answer numerically.

Thermal decomposition of sodium azide (NaN₃) into nitrogen gas and sodium metal is used to inflate car airbags. The reaction proceeds by the following chemical reaction. 2NaN₃ (s) ⟶3N₂ (g) + 2Na (s) How many grams of NaN₃ are need to inflate a 10.

Is salt water acidic, basic or neutral

The process of gathering knowledge about the natural world

4. Which of the following elements has the greatest electronegativity? a. Krypton b. Bromine c. Phosphorous d. Sulfur