A sample of P 2 O 4 contains 181 . g of phosphorus. Calculate the mass of the sample in pounds

Arrange the following solids in order of decreasing solubility, CaF2, K sp=4.0 × 10-11; Ag2CO3, K sp=8.1 × 10-12; Ba3(PO4)2, K s

viva [34]

Answer:

CaF2 > Ag2CO3 > Ag3(PO4)2 > Ba3(PO4)2

Explanation:

Ksp which is solubility product konstant shows equilibrium between a solids and its respective ions in a solution. And the lower it is the less soluble the ion compound will be. And for CaF2 we have the highest konstant and for Ba3(PO4)2 we have it the lowest.

5 0

3 years ago

Can someone help me with sig figs? i cannot tell the difference of the zeros.

musickatia [10]

Answer:

Explanation:

If the number is written in scientific notation, everything counts. For example 1.5540000 * 10^9 all numbers count. Answer 8 sig digs.
If the number is not written in scientific notation then left hand zeros may or may not count. It's a guessing game 34000 You really don't know until it is put in scientific notation.
If the number is a decimal between 0 and 1 then the numbers immediately after the decimal do not count. For example 0.00034 has two sig digs.
If the number is between 0 and 1 and there are after a known sig dig., then it depends on what you are told. For example 0.00045400 is a guess. There are at least three sig digs. 454. What you do with the last two zeros is a guess.

5 0

4 years ago

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Predict what would change about your number of sandwiches and your thinking if you had the same 6 pieces of bread and 4 slices o

iren2701 [21]

The number of sandwiches that can made with 6 pieces of bread and 4 slices of cheese is 3 sandwiches.

<h3>What are limiting reactants?</h3>

Limiting reactants are those reactants which determine the amount of product that can be formed since they get used up in a reaction.

In the making of sandwiches from bread and cheese, the limiting reactant is the material that is used up.

The formula for making a sandwich is given below;

2 pieces of bread + 1 slice of cheese = 1 sandwich

6 pieces of bread can make 3 sandwiches

4 slices of cheese can make 4 sandwiches

Thus, bread is the limiting reactant.

Therefore, the number of sandwiches that can made with 6 pieces of bread and 4 slices of cheese is 3 sandwiches.

Learn more about limiting reactants at: brainly.com/question/14225536

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7 0

2 years ago

Read 2 more answers

To what volume should you dilute 50.0 ml of a 5.00-m ki solution so that 25.0 ml of the diluted solution contains 3.05 g of ki?

sammy [17]

TheThe volume should be added in dilute is 3.24L.

<h3>What is Molarity? </h3>

Molarity is the amount of a substance in a certain volume of solution. It is defined as the moles of solute per litre of a solution.

Molarity = no of moles / Volume (L)

Where the unit of Molarity is M or moles/ L .

We have given here ,

Molarity→5M

Volume →50 ml

Vol2→25.0 ml

weight of the K I is 3.05 g and molar mass of KI is 166 g/ mol.

M1V1=M2V2

M2= no of moles of KI / Volume

M2 = 3.05×1000/ 25×166

M2→ 0.73M

V2→5×50×1000/ 0.73

V2→ 3.24 L

The volume of the solution will be 3.24 L.

to learn more about Molarity click here brainly.com/question/8732513

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6 0

2 years ago

What is the molarity of a potassium triiodide solution, KI3(aq), if 30.00 mL of the solution is required to completely react wit

vfiekz [6]

Answer:

The molarity is 0.203 M

Explanation:

Using the formula C(oxi) x V(oxi) / [C(red) x V(red)] = N(oxi) / N(red)

Where oxi and red means reducing agent and oxidising agent respectively.

C = Concentration, V = Volume and N = number of moles.

C(oxi) = 0.5 M

V(oxi) = mL

C(red) = ?

V(red) = 30mL

Equation of reaction = 2K2S2O3 + KI3 = K2S4O6 + 3KI

so N(red) = 1 , N(oxi) = 2

from the equation above,

C(red) = 0.5 x 25 x 1 / (2 x 30)

= 0.203 M.

3 0

3 years ago