A chemist is given an unknown gas sample. I beg your pardon observation explains a chemical property of the sample?
Consider the chemistry reaction described asethylene + hydrogen > catalyst > ethaneIdentify the products(s) in this example.

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Consider the reaction below. How many grams of C will certainly be necessary when 5.00 grams that Na2SO4 with are develop 3.09 grams of CO2 and also 2.75 grams the Na2S?
you have 1.0 gram that iron and also iron and 1.0 gram the lead. The particular heat of iron is 0.473J/g C and the particular heat of command is 0.0305 j/g C
The furthermore apart 2 oppositely charged particles room to each other the stronger their pressure of attraction will certainly be.
Main group aspects that space non-metals commonly ___ one or an ext electrons to form ___ which have actually a ___ charge.

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three atom of nitrogen, twelve atom of hydrogen, one atom that phosphorus, and four atoms of oxygen (B)
If an element G could react v sulfur to form an ionic compound through formula GS2, the charge on the ion created by G would certainly be ___
I have a beaker which consists of 100 mL of a pure liquid. I recognize that the freezing suggest is -10 degrees C. I currently dissolve a 2nd compound into the liquid. What will happen to the freeze point?
A 1.0 - kg sample that antimony took 46.0 kj the heat, thus raising the temperature that the Antimony indigenous 20.0 levels C come it"s melting suggest 630.0 level C. Calculation the the details heat of antimony in calories> 1 calorie = 4.184 J
Classify together either a physical adjust or chemical change.A. A pond rustingB. Lattice cheese because that a meal C. Firecracker exploding
A. Chemical change because steel is an altering to rustB. Physical because cheese remains the same just various shapeC. Chemical readjust because fireworks is exploding and cannot adjust back
Explain exactly how the law of identify composition and the law of multiple proportions utilizing water H2O and hydrogen peroxide H2O2 as examples.
A. Law of definite composition:Compounds have the right to have the same facet but various mass ratios H2O=(H) 2.02 (O) 16H2O2 = (H) 2.02 , (O) 32B legislation of many proportions:Compounds have the right to have the same element by various atom ratio2:1 H2O, 2:2 H2O2
The mass of a sodium atom in atomic mass devices is 23.0 amu. What doe the atom sweet in grams? express her answer through the correct number of significant figures. ( 1 amu = 1.660539 x 10-24g)

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