Question

Chem help please!!

Please help me- even if you don't have the answer to all of the, anything helps!

1) If 1.0 gram of Hydrogen reacts with 19.0 Grams of Fluorine, then what is the percent by mass of fluorine in the compound that is formed?

2) Chemical equations provide:
(a) the physical state of each reactant and product
(b) the ratios of reactants and products
(c) the chemical identity of the reactants and products
(d) all of the above

3) Match the type of chemical reaction with the appropriate skeleton equation-

1. A + B -> AB A. Combustion
2. AB ->A + B B. Synthesis
3. A + BX -> AX + B C. Double Replacement
4. AX + BY -> AY + BX D. Single Replacement
5. 2A + O2 -> 2AO E. Decomposistion

Answer 1

1) (19/20) * 100 = percent of Fluorine

2) D

3) 1-B, 2-E, 3-D, 4-C, 5-A

Answer 2

Thank you :)