How could you safely determine if a base is stronger than an acid?

Answers

Answer 1

Answer: Combine the two solutions. If the resulting salt is basic, you know the base was stronger. If you end up with an acidic salt, the acid was stronger.

Answer 2

Answer:

Answer:

B) Use a conductivity apparatus

Explanation:

I got it right on Plato. Strong acids and strong bases will conduct more than weak acids and weak bases, so you can tell if one is stronger than the other by seeing which one conducts more.

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Which of the following is not true of "concentration"?a. It increases when you add more solute to the solvent. b. It decreases when you add more solute to the solvent. c. It decreases when you add more solvent to the solution.

1. Gas Formula Helium He Methane CHA Oxygen 0₂ Nitrogen N₂ Chlorine Cl₂ Relative atomic or molecular mass 4 ,16, 32 ,28 ,71 Look at the table and answer the following questions. (a) Which two gases will mix fastest? (b) Which gas will take least time to escape from gas syringe? (c) Which gas will diffuse slowest and why? Or (c) An unknown gas diffuses faster than 0₂ and slower than N₂, what can you about its molecular mass?

Answers

Answer:

Explanation:

a) this is for the gases with lowest molecular mass meaning they are light and so move faster and so mix faster

b) The gas taking least time will be Cl2 as it is the heaviest gas and so moves the slowest

c) Same its Cl2 and same reason

d) This will be lighter than oxygen but heavier than nitrogen

What is required for reactants to form bonds?energy output
energy input
equilibrium
exchange reaction

Answers

Energy input is required for reactants to form bonds.

Can anyone think of an analogy for a synthesis reaction?

Answers

In a synthesis reaction (also known as a composition reaction), two substances combine to form a larger substance. A good analogy of these reactions are dancers. ... In the simplest type of synthesis reaction, two elements combine to form a compound.

How much heat is required to vaporize 50.0 g of water if the initial temperature of the water is 25.0◦c and the water is heated to its boiling point where it is converted to steam? the specific heat capacity of water is 4.18 j · ( ◦c)−1 · g −1 and the standard enthalpy of vaporization of water at its boiling point is 40.7 kj · mol−1?

Answers

Q = mCΔT
Q is heat, m is mass, C is specific heat, and ΔT is change in temp

First, find how much energy you need to raise the heat to 100C, or the boiling point
Q = (50g)(4.18)(75 degrees) = 15675 J or 15.675 kJ

Then you need 40.7 kJ extra for each mole of water to evaporate it
If you have 50 grams of water and there are 18 grams per mol
50g / 18g = 2.8 moles x 40.7 = 113 kJ extra

15.675 + 113 kJ = 128.7 kJ required

Final answer:

The total heat required to heat 50 g of water from 25 °C to boiling and then vaporize it is approximately 128.821 kJ.

Explanation:

To calculate the total heat required to boil the water, we need to consider two steps: heating the water from its initial temperature to the boiling point, and then converting the water at its boiling point to steam.

Firstly, we calculate the heat needed to heat the water to the boiling point, using equation q = mcΔT: q1 = m * c * ΔT = 50.0 g * 4.18 J/(g • °C) * (100°C - 25°C) = 15675 J = 15.675 kJ
Next, amount of heat needed to vaporize the water at its boiling point can be found using the standard enthalpy of vaporization, ΔHvap = 40.7kJ/mol. But this value is per mole, so we need to convert grams of water to moles using the molar mass of water (18 g/mol). So, the number of moles of water is 50 g / 18 g/mol = 2.78 mol. The heat for vaporization, q2 = n * ΔHvap = 2.78 mol * 40.7 kJ/mol = 113.146 kJ.

Therefore, the total heat required to heat and vaporize the water is q = q1 + q2 = 15.675 kJ + 113.146 kJ = 128.821 kJ.

Learn more about Heat calculation here:

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How many sigma and pi bonds are there in phenol?

Answers

In the most simple phenol,
sigma bond = 7
pi bond = 3

Higher classes of phenol may have more number of bonds. so, don't confuse from that!

Hope this helps!

Parts per million is used to express the

Answers

It is used to express very small concentrations of solute. Hope this helped ☻

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given that the molar mass of H2O is 18.02g/mol, how many liters of propane are required at STP to produce 75 g of H2O from this reaction?

Choose the correct one plz!

Will a precipitate form when NaCl(aq) and AgNO3 (aq) are mixed together?