How does the pH value of 1M potassium hydroxide solution compare with that of 1M aqueous ammonia? Explain

A yellow powder and a blue liquid are shaken together in a test tube to produce a clear green mixture that is all liquid. Which

Ghella [55]

<span>insoluble is your answer</span>

7 0

4 years ago

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A taco from a fast food restaurant contains 7.0 g of fat, 25. g of carbohydrate, and 11 g of protein. How many kJ of energy does

Gennadij [26K]

Answer: 878 kJ of energy is there in cheeseburger

Explanation:

Given : calorific value of fat = 38kJ/g

calorific value of carbohydrate = 17 kJ/g

calorific value of protein = 17kJ/g

1 g of fat contains energy = 38 kJ

7.0 g of fat contains energy = $\frac{38}{1}\times 7.0=266 kJ$

1 g of carbohydrate contains energy = 17 kJ

25 g of fat contains energy = $\frac{17}{1}\times 25=425kJ$

1 g of protein contains energy = 17 kJ

11 g of protein contains energy = $\frac{17}{1}\times 11=187kJ$

Total energy = (266+425+187) kJ = 878 kJ

5 0

3 years ago

I NEED THIS ASAP <br><br> Describe or define transform plate boundary

ohaa [14]

The most famous example of this is the San Andreas Fault Zone of western North America. The San Andreas connects a divergent boundary in the Gulf of California with the Cascadia subduction zone. Another example of a transform boundary on land is the Alpine Fault of New Zealand.

4 0

3 years ago

A solution of LiCl in water is 20.0 wt% LiCl. What is the mole fraction of LiCl?0.09600.4720.1064.44

Tresset [83]

Answer:

mole fraction of LiCl = 0.096

Explanation:

Weight percentage -

weight percentage of A is given as , the weight of the substance A by weight of the total solution multiplied by 100 .

i.e.

weight % A = weight of A / weight of solution * 100

GIven ,

20.0 wt% LiCl

Now ,

Assuming weight of solution = 100 g ,

weight if LiCl = 20.0 g

Since ,

Moles is denoted by given mass divided by the molecular mass ,

Hence ,

n = w / m

n = moles ,

w = given mass ,

m = molecular mass .

From the question ,

molar mass of LiCl = 42.39 g/mol

moles of LiCl = mass / molar mass = 20.0 g / 42.39 g/mol = 0.472 mol

Since , solution = 100 g ,

and ,

Solution = solute + solvent

100g = 20g + solvent

Solvent = 80 g

mass of water = 80 g

water molecular mass = 18 g/mol

moles of water = 80g / 18 g/mol = 4.44 mol

Mole fraction -

It is the ratio of the moles of one of the component of the solution by the mole of the solution .

Total moles of the solution = moles of the solute + moles of solvent

Total moles of the solution = 0.472 mol + 4.44 mol = 4.92 mol

Now ,

mole fraction of LiCl = moles of LiCl / total moles = 0.472 mol / 4.92

mole fraction of LiCl = 0.096

3 0

3 years ago

Which refers to the measure of the amount of water vapor in the air?

il63 [147K]

Answer:

humidity

Explanation:

6 0

4 years ago

How does the pH value of 1M potassium hydroxide solution compare with that of 1M aqueous ammonia? Explain​

How does the pH value of 1M potassium hydroxide solution compare with that of 1M aqueous ammonia? Explain