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
marshall27 [118]
3 years ago
11

Difference between hard water and cold water ? ​

Chemistry
1 answer:
sweet-ann [11.9K]3 years ago
6 0
The hardness of water is determined primarily by the amount of calcium and magnesium it contains. ... Instead of having higher levels of calcium and magnesium, soft water tends to have higher concentrations of sodium, or salt.
You might be interested in
How many sulfur atoms are present in 100 grams of this compound? Report your answer to three significant figures.
kap26 [50]

Answer:

1.88 × 10²⁴ atoms

Explanation:

Step 1: Given data

Mass of sulfur: 100 g

Step 2: Calculate the moles corresponding to 100 g of sulfur

The molar mass of sulfur is 32.07 g/mol. The moles corresponding to 100 g of sulfur are:

100 g × (1 mol/32.07 g) = 3.12 mol

Step 3: Calculate the number of atoms in 3.12 moles of sulfur

We will use Avogadro's number: there are 6.02 × 10²³ atoms of sulfur in 1 mole of sulfur.

3.12 mol × (6.02 × 10²³ atoms/1 mol) = 1.88 × 10²⁴ atoms

7 0
3 years ago
Which of the following is a cause of eutrophication of a lake?
cluponka [151]

Answer:

storm runoff

.....................................

4 0
3 years ago
Read 2 more answers
Which of the following statements is true?
Lera25 [3.4K]

The  statement  which is true is

metals  lose  electrons  to become cations

<u><em>Explanation</em></u>

  • metals tends  to loss electrons to attain  noble gas  electrons  configuration.
  • When metal loses electrons they form a  positive charged ions.
  • The positively charged ion is known as  cations.
  • for  example  sodium metal (Na)  loses  1 electron to form   a cation with  a charge  of positive 1 ( Na^+)
3 0
3 years ago
Read 2 more answers
Find out no. of moles present is 72 gm of water?
Alona [7]
72g H2O x 1 mol H2O/18.02g H2O = 3.99 mol H2O 
8 0
3 years ago
You decided to change your bedroom. You move your bed 1.5 meters across the room and the force you used to move the bed was 20 n
lorasvet [3.4K]
Human Strength power
6 0
3 years ago
Other questions:
  • What is the number of moles of hydrogen that is needed to produce 0.253 mol of water
    15·1 answer
  • Describe the best way Ryan can increase the rate of dissolving of lead (II) chloride in a solution.
    7·2 answers
  • Round to 4 significant figures.<br> 35.5450
    9·2 answers
  • Briefly explain Potassium with 19 protons and 19 neutrons
    10·1 answer
  • How did elements get to earth?
    7·1 answer
  • Explain how the words are alike and different
    10·1 answer
  • What is the energy of a photon of yellow light with a frequency of 5.2 x 10¹⁴ Hz?<br><br>​
    14·1 answer
  • How many molecules of water are in 1.8 moles of water
    7·1 answer
  • What is the volume of 58.0g of chlorine gas at stp
    10·1 answer
  • List the type of reaction. Predict the outcome and balance.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!