Find the mistake C2H4(g) + 2O2(g) → 2CO2(g) + 2H2(g)

Answers

Answer 1

Answer: this equation is a combustion reaction. a combustion reaction must have carbon dioxide and water as products.

yours only had carbon dioxide and no h2o

therefore it is wrong

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Which element (Na or Cl) is more likely to steal an outer electron from the other?

Answers

Answer:

Cl is more likely to than Na

Explanation:

The question asks for the element more take up an electron from the other

The ability of an atom to take take or give electrons in a chemical reaction, depends on its electron affinity and ionization energy, respectively

Chlorine, Cl, has the highest electron affinity in the periodic table which makes it attract electrons more towards itself

Sodium, Na, has a low ionization energy (about 2/5 of that of chlorine) than chlorine, Cl, making sodium more readily able to give its valence electron in a reaction

Therefore, Cl is more likely to take up an outer electron from Na.

Which compound reacts with an acid to produce water and a salt(1) CH3Cl
(2) CH3COOH
(3)KCl
(3)KOH

Answers

KOH is the only base, and any neutralization reaction produces a salt and water

I'm not exactly sure which one but I do know that an acid and a base react in a aqueous solution to form water, so i would probably eliminate the ones that aren't aqueous solutions.

How many grams are in 2.3 moles of calcium phosphate, Ca3(PO3)2

Answers

moles = mass/molar mass
moles = 2.3
molar mass = 278
=> mass = moles*molar mass = 639.4g

Which of the following is not an acid-base neutralization reaction? (3 points)NH3 + HCl yields NH4Cl

NaOH + CH3COOH yields Na CH3COO + H2O

2HNO3 + Ca(OH)2 yields Ca(NO3)2 + 2H2O

H2SO4 + 2NaCl yields 2HCl + Na2SO4

Answers

fourth option...
H2SO4 + 2NaCl yields 2HCl + Na2SO4

is the correct answer...
because neutralisation reaction yields salt n water but here acid is produced so the solution isn't neutralized......

HOPE IT HELPS YOU '_'

What role does evidence play in repeating experiments?

Answers

It helps affirm results of previous experiments.

The molarity of an aqueous solution of NaCl is defined as the(1) grams of NaCl per liter of water
(2) grams of NaCl per liter of solution
(3) moles of NaCl per liter of water
(4) moles of NaCl per liter of solution

Answers

Answer:

The correct option is (4)

Explanation:

Molarity (M) is generally defined as the number of moles of a solute per liter of the solution.

The formula for molarity (from the definition above) is

M = number of moles (n) ÷ volume (in liters or dm³)

The unit for molarity is mol/L or mol/dm³

From the above, it can be deduced that the molarity of an aqueous solution of common salt (NaCl) is the number of moles of NaCl per liter of the salt solution.

Molarity = number of moles / volume in liters solution

Answer (4)

hope this helps!

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