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
lilavasa [31]
3 years ago
11

What is the molality of a solution made by dissolving 5.2 g of NaCl in 100 g of water?

Chemistry
1 answer:
stich3 [128]3 years ago
8 0

Answer:

The molality is 0,89

Explanation:

A molal solution indicates the moles of solute in 1 kg of solvent (1000 g). First, we calculate the weight of 1 mol of NaCl:

Weight NaCl= Weight Na + Weight Cl=23g + 35,5 g=58,5 g/mol

58,5 g----1 mol NaCl

5,2 g----x=(5,2 gx1 mol NaCl)/58,5 g=0,089 mol NaCl

100g water-----0,089 mol NaCl

1000g water----x=(1000g waterx0,089 mol NaCl)/100 g water

x=0,89 mol NaCl----> <em>0,89 m</em>

You might be interested in
Which of the following was NOT one of the components of Dalton's Atomic Theory? (1 point) All elements are composed of tiny indi
bezimeni [28]

Answer: Atoms of one element, however, are never changed into atoms of another element as a result of a chemical reaction.

Explanation:

Dalton's Atomic Theory was proposed in the 20th century by an English Scientist named John Dalton. His theory is postulated as follows:

1) All elements are composed of tiny indivisible particles called atoms.

2) The atoms of any one element are identical to those of any other element. 3) Atoms of different elements can physically mix together or can chemically combine in simple whole-number ratios to form compounds.

However, the final option is NOT one of Dalton's Theory

5 0
3 years ago
What planet has the highest ambient temperature?
cupoosta [38]
Venus is the hottest planet
4 0
3 years ago
Read 2 more answers
Need help on atoms and molecules​
balu736 [363]

1-b

2-c

3-a

4-d

5-d

6-b

7-a

7 0
3 years ago
What type of hydrocarbon is CH3-CH2-O-CH2-CH3?<br><br> Is it a diethyl ether?
Nadusha1986 [10]
You are correct! this molecule is an ether, specifically diethyl ether.
5 0
3 years ago
In the periodic table how many elements could be classified as metals in group IV?
lord [1]
4 elements are classified in group 4 like titanium, zirconium, hafnium and ruthorfordium
8 0
4 years ago
Other questions:
  • If a feather was trapped in mud and the impression was preserved over time, a(n) _________ fossil would be formed.
    12·2 answers
  • How to solve any stoichiometry problem?
    6·1 answer
  • For the main group elements( excluding the transition elements) , is it necessary to memorize the type of ion each element makes
    5·1 answer
  • What is the most commonly used word for the element
    12·1 answer
  • What do the broken lines connected to hydrogen atoms represent in this diagram?
    9·2 answers
  • At 500.K and 1.00 atm pressure, 1.5 liters of pentane gas, C5H12, is mixed with 15 liters of oxygen gas. A complete combustion r
    13·1 answer
  • Why is acid added to water during eletrolysis
    14·1 answer
  • What happens as elevation increases?
    15·1 answer
  • What volume of 0.130 M HCl is required for the complete neutralization of 1.30 g of NaHCO3 (sodium bicarbonate)?
    12·1 answer
  • I need someone whos good enough at chemistry to check is this product safe to use? the ingredients : Sorbitan sesquioleate, Cety
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!