What do chemical symbols and formulas represent, respectively?

a bag filled with gas is more effective at preventing injuries in a car accident than a bag filled with water because

What happens to the other organism in a food chain when an organism in the middle of the food chain is lost

Analysis of a sample of a covalent compound showed that it contained 14.4% hydrogen and 85.6% carbon by mass. what is the empirical formula for this compound?

When the pressure that a gas exerts on a sealed container changed from 32.6 psi to ___ psi, the temperature changes from 735 k to 1035 k?

Is 2Na + Cl - - > 2 NaCl a balanced chemical equation? Is it obeying the law of conservation of matter? Question 4 options: Yes it is balanced. It has the same number of Na and Cl on both the reactant side and the product side. No it is not balanced.

Solid sodium reacts violently with water producing heat, hydrogen gas and sodium hydroxide. How many molecules of hydrogen gas are produced when 65.4g of sodium are added to water? 2Na (s) + 2H2O (l) - - >. 2NaOH (aq) + H2 (g)

Use "Folded Mountain" in a sentence? For science

How to calculate how muchyou would get from the lottery?

What is the Element hydrogen made from

Part a ammonia can be produced via the chemical reaction n2 (g) + 3h2 (g) ⇌2nh3 (g) during the production process, the production engineer determines the reaction quotient to be q = 3.56*10-4. if k = 6.