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Orlov [11]
3 years ago
13

A solution contains 14 grams of KCl in 100. grams of water at 40°C. What is the minimum amount of KCl that must be added to make

this a saturated solution?
Chemistry
1 answer:
pashok25 [27]3 years ago
8 0

Answer:

1386g

Explanation:

Solubility of a solute is the ability of the solute to mix into a liquid (the solvent). It measures the highest amount of substance mixed into a liquid solvent while they are both at equal amounts.

if 14g dissolved in 100cm3

  the amount that will dissolve in 1000cm3 = 14 x 1000/ 100

                                                                      =1400g

To form a saturated solution, 1400 - 14 = 1386g must be added.

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If 18.7ml of 0.01500M aqueous HCl is required to titrâtes 15.00ml of an aqueous solution of NaOH to the equivalence point, what
sweet [91]

Answer:

0.0187 M

Explanation:

Step 1: Write the balanced neutralization reaction

NaOH + HCl ⇒ NaCl + H₂O

Step 2: Calculate the reacting moles of HCl

18.7 mL of 0.01500 M HCl react.

0.0187 L × 0.01500 mol/L = 2.81 × 10⁻⁴ mol

Step 3: Calculate the reacting moles of NaOH

The molar ratio of HCl to NaOH is 1:1. The reacting moles of NaOH are 1/1 × 2.81 × 10⁻⁴ mol = 2.81 × 10⁻⁴ mol.

Step 4: Calculate the molarity of NaOH

2.81 × 10⁻⁴ moles are in 15.00 mL of NaOH.

[NaOH] = 2.81 × 10⁻⁴ mol/0.01500 L = 0.0187 M

6 0
3 years ago
In the lab, you looked at speed-time graphs to determine the acceleration of the cart for each of the three fan speeds
Bumek [7]

Answer:

What was the acceleration of the cart with Low fan speed?  ⇒ 18.0 cm/s2

What was the acceleration of the cart with Medium fan speed?  ⇒ 24.0 cm/s2

What was the acceleration of the cart with High fan speed? 32.0cm/s2

Explanation:

8 0
3 years ago
Read 2 more answers
Balance each reaction and write its reaction quotient, Qc:(b) POCl₃(g) ⇄ PCl₃(g) + O₂(g)
Komok [63]

When we balance the given equation

      POCl₃(g) ⇄ PCl₃(g) + O₂(g)

We will get

      2POCl₃(g) ⇄ 2PCl₃(g) + O₂(g)

Solution:

Balancing the given equation

      POCl₃(g) ⇄ PCl₃(g) + O₂(g)

Balancing the number of O

      2POCl₃(g) ⇄ PCl₃(g) + O₂(g)

Balancing the number of P and Cl

      2POCl₃(g) ⇄ 2PCl₃(g) + O₂(g)

We get the balanced equation

      2POCl₃(g) ⇄ 2PCl₃(g) + O₂(g)

The reaction quotient will be

     Qc = [product] / [reactant]

     Qc ​= [PCl₃(g) + O₂(g)] / [POCl₃(g) ]

To learn more click the given link

brainly.com/question/26227625

#SPJ4

4 0
1 year ago
Calculate the molar mass of BA(NO3)2
VikaD [51]

Hey there!

Ba(NO₃)₂  

Ba: 1 x 137.327 = 137.327

N: 2 x 14.007 = 28.014

O: 6 x 16 = 96

-----------------------------------

                          261.341 g/mol

The molar mass of Ba(NO₃)₂ is 261.341 g/mol.

Hope this helps!

6 0
3 years ago
CH3F contains polar covalent bond?
Fudgin [204]

Answer:

CH3F is a polar molecule due to the presence of a very electronegative fluorine (3.98) as one of the outer atoms which pulls electrons towards it inducing a partial negative charge

Explanation:

8 0
3 years ago
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