1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
True [87]
3 years ago
15

Calculate each of the following quantities. (a) Mass (g) of solute in 175.4 mL of 0.267 M calcium acetate WebAssign will check y

our answer for the correct number of significant figures. g (b) Molarity of 597 mL solution containing 21.1 g of potassium iodide WebAssign will check your answer for the correct number of significant figures. M (c) Amount (mol) of solute in 145.6 L of 0.703 M sodium cyanide WebAssign will check your answer for the correct number of significant figures. mol
Chemistry
1 answer:
ss7ja [257]3 years ago
8 0

Answer:

a) 7.40 grams

b) 0.213 M

c) 102 moles

Explanation:

(a) Mass (g) of solute in 175.4 mL of 0.267 M calcium acetate

Step 1: Data given

Volume = 175.4 mL = 0.1754 L

Molarity = 0.267 M

Molar mass = 158.17 g/mol

Step 2: Calculate moles

Moles = molarity * volume

Moles = 0.267 M * 0.1754 L

Moles = 0.0468 moles

Step 3: Calculate mass

Mass = 0.0468 moles * 158.17 g/mol

<u>Mass = 7.40 grams</u>

b) Molarity of 597 mL solution containing 21.1 g of potassium iodide

Step 1: Data given

Volume = 597 mL = 0.597 L

Mass = 21.1 grams

Molar mass KI = 166.0 g/mol

Step 2: Calculate moles KI

Moles KI = 21.1 grams / 166.0 g/mol

Moles KI = 0.127 moles

Step 3: Calculate molarity

Molarity = moles / volume

Molarity = 0.127 moles / 0.597 L

Molarity = 0.213 M

(c) Amount (mol) of solute in 145.6 L of 0.703 M sodium cyanide

Step 1: Data given

Volume = 145.6 L

Molarity = 0.703 M

Step 2: Calculate moles

moles = molarity * volume

Moles = 0.703 M * 145.6 L

Moles = 102 moles

You might be interested in
Write in standard notation: 3.2x 103​
Anni [7]

Answer:

3.2

10×10×10

=1000

so 3.2×1000

=3200

4 0
3 years ago
Which of the following nuclei would be the most stable?
ValentinkaMS [17]
Ten protons would be Neon, but the most stable? I'd have to say 12 neutrons in contrast to the 10 protons.  Not too negative in balance.
6 0
3 years ago
True or false a solid has a constant shape and volume
dusya [7]
The answer you are looking for is True
8 0
3 years ago
If the 3d and 4s bands overlap in a metal atom, what is the maximum number of electrons for this composite band? express your an
Roman55 [17]

Hey there!

3d band can hold as many as 10 electrons, while 4s can bear as many as two electrons.

The maximum number of electrons for this composite band should be 12 electrons.

Hope that helps!

3 0
3 years ago
The nature of zinc powder and Cobalt (II )oxide is heated the following reaction occurs ;
Scilla [17]

1) The metal which reduces the other compound is the one higher in the reactivity. So in this case it is \mathrm{Zn}.

2) The substance which brings about reduction while itself getting oxidised (that is losing electrons) is called a reducing agent. Here, $\mathrm{Zn}$ is the reducing agent and reduces Cobalt Oxide to Cobalt while itself getting oxidised to Zinc oxide.

8 0
3 years ago
Other questions:
  • Which is an example of an exothermic process? boiling of milk melting of wax freezing of water evaporation of water heating of w
    5·2 answers
  • Describe how you can prove that a bicycle is matter
    7·1 answer
  • • Carbon Dioxide is a greenhouse gas because it traps heat in the Earth’s surface.
    12·1 answer
  • What is the mass, in grams, of solute in 255mL of a 0.0525M solution of KMnO4 (MM =
    15·1 answer
  • What is the ph of an aqueous solution with a hydrogen ion concentration of [h ] = 9.7 × 10–4 m?
    6·1 answer
  • Magnesium oxidizes via the reaction: 2 Mg + O2 → 2 MgO The reaction has a △Hrxn = -1203 kJ. How much heat (in kJ) is released wh
    10·1 answer
  • Nsity VVS
    13·1 answer
  • Which element does the electron configuration 1s2s2p2 represent?
    6·1 answer
  • If an aluminum skillet with 10.0 inch diameter weighs 3.00 pounds, What volume of aluminum does it contain? (The density of alum
    9·1 answer
  • determine the molar mass (in g/mol) of a gas that travels with an effusion time that is 1.94 times longer than that of hcl(g).
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!