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anastassius [24]
3 years ago
5

Which is the best analogy of a wave?

Chemistry
1 answer:
o-na [289]3 years ago
8 0
T h e a s w e r i s d
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Consider this equilibrium reaction at 400 K. Br2(g)+Cl2(g)↽−−⇀2BrCl(g)Kc=7.0 If the composition of the reaction mixture at 400 K
Genrish500 [490]

Answer:

Q = 7.0

Q = kc. The reaction is in equilibrium

Explanation:

Based on the reaction:

Br₂ + Cl₂ ⇄ 2BrCl

Equilibrium constant of the reaction, kc, is the ratio of <em>equilibrium concentrations</em> products over reactants powered to its reaction coefficient:

Kc = [BrCl]² / [Br₂] [Cl₂] = 7.0

Now, reaction quotient, Q, is write as the same Kc but the concentrations are actual concentrations:

Q = [BrCl]² / [Br₂] [Cl₂]

Replacing:

Q = [0.00415M]² / [0.00366M] [0.000672M]

Q = 7.0

Now, as Q = Kc = 7.0, the reaction mixture is in equilibrium

4 0
3 years ago
A fixed, single pulley that is used to lift a block does which one of the following?
olga55 [171]
The answer is C, it makes the block easier to lift by changing the direction of the force needed to lift it 
4 0
3 years ago
Read 2 more answers
Sodas are not only full of sugar (124 grams/L), but they are also acidic and will dissolve your teeth, composed of hydroxyapatit
Naya [18.7K]

Answer:

The pH of the HCl solution is 3.9

Explanation:

Knowing the molar mass of HCl (36.5g/mol) it is possible to calculate the number of moles of HCl in the solution,

\frac{1.5x10^{-3}g}{36.5g/mol} = 4.1x10^{-5}moles of HCl

HCl is a strong acid and when added to water will form H+ and Cl-, thus the moles of HCl are equal to moles of H+ in 354 mL of water

\frac{4.1x10^{-5}moles }{354mL} x 1000= 1.16x10^{-4} M

The concentration of protons in the solutions is 1.16x10^{-4} M.

The expression used to calculate the pH is

pH = -Log ([H^{+}]) = -Log (1.16x10^{-4} M) = 3.9

Hence, the pH of the HCl solution is 3.9 and Pepsi has a pH of 3.4 approximately, so they have almost the same pH.

3 0
2 years ago
A family consumes 2.5 gallons of milk per week. How many liters of milk do they need to buy for one month? (Assume there are exa
Arlecino [84]

Answer:

37.85 liters

Explanation:

they need 10 gallons for a month (2.5*4)

after that, convert gallons to liters (conversion to liters= 3.785)

10*3.7585= 37.85

3 0
2 years ago
Carbohydrates are polymers of what monomer?​
Leona [35]

Answer:

Yes, carbohydrates have both monomers and polymers. Monomers of carbohydrates are monosaccharides (mono- one; saccharide- sugar) which are simple sugars like glucose, fructose and galactose. Polymers of carbohydrates or polysaccharides include starch...

Explanation:

3 0
3 years ago
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