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2H2O 2H2 O2?
I think you've answered your own question. 2H2 plus 02 forms 2H20.Yes, but perhaps he doesn't know the product is the part on the right side of the arrow. In this case, as you said, 2H2O.
Is it true that a low concentration of a chemical slows reaction rate?
I would point your studies towards collision theory. It's not that a low concentration necessarily slows down a reaction, but that a low concentration will have a slower reaction rate than a higher concentration of reactants. A lower concentration means a lower number of reactants in solution, meaning it is less likely for the reactants to collide and create products. With a lot of reactants, it is much more likely for collisions to occur.
Which of the following is NOT a control for the experiment described in the question below?
Which of the following is not true about controls in an experiment
What two things are always true of a number written in scientific notation?
The exponents can be plus or minus.
What causes molecules to change?
I think this refers to catalysts as these are considered not to be changed by a reaction-- sometimes this true when molecules react on the surface of a catalyst bu sometimes the catalyst does get involved in the chemical reaction- but is regenerated.
Which of the following is true for the gas phase reaction shown below 2c2h2 g plus 5o2 g 4co2 g plus 2h2o g Δh equals -2511 kj?
ΔS is negative and ΔG is negative at low temperatures...
Which of the following is true for the gas phase reaction shown below 2c2ho g 5o2 g 4co2 g 2h2o g Δh 2511 kj?
ΔS is positive and G is negative at all temp.Which of the following is true for the gas phase reaction shown below? 2C2H2(g) + 5O2(g) → 4CO2(g) + 2H2O(g), ΔH = -2511 kJΔS is negative and ΔG is negative at low temperatures.
Which of the following is true for the gas phase reaction shown below 4nh3g plus 5o2g 4nog plus 6h2og Δh equals -0.905 kj?
S is + and g is - at all temps #BOSSDAT iluv mii baby ardarius pierce
Which of the following is true for the gas phase reaction shown below 2NH3g N2g plus 3H2g ΔH equals 160.58 kJ?
ΔS is positive and ΔG is negative at low temperatures only
The polynomial below is a perfect square trinomial of the form A2 - 2AB plus B2 4x2-16x plus 16?
True
Which of the following is true for the gas phase reaction shown below 4nh3 g plus 5o2 g 4no g plus 6h2o g Δh equals 0.905 kj?
s is positive and g i s negative at all temperatures
The expression below is a sum of cubes 64x3 plus 125?
true
What is true for the gas phase reaction shown below 2NH3 gives n2 plus 3h2 delta H equals 160.58 kj?
s is positive and g is negative at low temperatures only
The polynomial below is a perfect square trinomial of the form A2 - 2AB plus B2 9x2-18x plus 36?
TrUE
What are the reactants of glucose plus oxygen equals ATP plus carbon dioxide plus water plus heat?
atoms
Choose all of the statements that are true about this single replacement reaction Na plus PbO?
A reaction will occur because sodium is more reactive than lead. This is an example of a redox reaction. One of the products will be pure lead.
Is it true that in a chemical reaction reactants are changed into products?
no, it is before the reaction
